فهرست مطالب majid kermani

This study aimed to assess the health impacts and economic costs of implementing the scenarios of decommissioning end-of-life cars and motorcycles and equipping buses with soot filters in Tehran, one of the largest cities in the Middle East, over a period of ten years (2017-2026) using the AIRQ+ model.

To start, the emission weights of Particulate matter (PM2.5) emitted from the vehicles mentioned in the scenarios were extracted from the Comprehensive National Action Plan for Reducing Air Pollution. Then the concentrations of PM2.5 were calculated using AERMOD. Finally, the AIRQ+ model was used to calculate the health effects of the scenarios over ten years.

The results indicated that implementing the total of three scenarios during ten years led to a reduction in mortality rates due to all causes, Chronic Obstructive Pulmonary Disease (COPD), lung cancer, Acute Lower Respiratory tract Infection (ALRI), Ischemic Heart Disease (IHD), and stroke by 14.89%, 6.16%, 31.51%, 19.5%, 16.5%, and 17.38%, respectively. In addition, decommissioning end-oflife cars and motorcycles separately led to a 6.75% and 6.53% reduction in deaths from all causes, 2.54% and 2.46% from COPD, 18.40% and 18.01% from lung cancer, 11.16% and 11% from ALRI, 12.82% and 12.69% from IHD, and 12.12% and 12.96% from stroke.

The results indicate that the implementation of these scenarios during ten years has positive effects on reducing deaths attributed by PM2.5 particles, but due to population growth, it has no effect on reducing economic costs.

Air pollution is generally mixture of complex and toxic compounds that particles (Particulate Matter: PM) are always a part of this mixture, that exposure to them leads to a wide range of health effects. The aim of the current study is to evaluate the health effects of reducing the level of PM2.5 in Tehran during ten years (2017-2025) to the WHO recommended level based on the Breath Life campaign، using the WHO AirQ+ model.

after collecting data on the population and concentration of particles in 2017 from the relevant centers and performing calculations to reduce the concentration to ten micrograms per cubic meter (recommended by WHO) with Excel software، the attributed deaths were estimated by AIRQ+ software.

with a 30.8% decrease in the concentration of PM2.5 during 10 years، death with all causes 25.22%، death due to chronic obstructive pulmonary disease 9.97%، death due to lung cancer 49.29%، death due to acute lower respiratory infection 34.36%، death due to ischemic heart disease 22.26% and death due to stroke brain decreased by 25.09%.

based on the results, reducing the concentration of PM2.5 by achieving the goal of the Breathe Life Campaign (10) and using air quality reduction strategies, will lead to a significant reduction of premature deaths caused by PM2.5 in Tehran.

Nitrophenol compounds are toxic compounds found in industrial wastewaters. 2,4-dinitrophenol is the most dangerous compound among phenolic compounds. The aim of this study was to evaluate the removal of 2,4-DNP from wastewater by microwaved dried sludge adsorbent.

The results of 2,4-DNP removal were discontinuously obtained by the high performance liquid chromatography (HPLC) at a wavelength of 360 nm with various effective factors, such as contact time, pH, initial concentration of 2,4-DNP, and microwaved sludge dose. Finally, the results were analyzed using the kinetics and isotherm models. The equilibrium time was obtained 120 min. The maximum removal rate was obtained at pH 7.

The findings indicated that the removal efficiency increased by increasing the adsorbent dose and decreasing the 2,4-DNP concentration. It was revealed that the removal of 2,4-DNP by microwaved sludge was 86%. The correlation coefficient value of linear and non-linear regression showed that kinetic studies follow the pseudo-second order model and isotherm studies follow the Freundlich isotherm model. The adsorption method relied entirely on pH and affected the adsorbent area attributes, ionization rate, and Delete percentage. When the pH was high, there was competition for the adsorption sites between hydroxide ions (OH) and 2,4-DNP molecules. At first, the adsorption process was high speed and gradually reached a stable level, because after a while, the adsorption sites become saturated.

As the absorbent dose increases, the efficiency of the adsorption process increases, because larger amounts of adsorbent cause higher adsorption places.

Air and its invisible components play a significant role in the existence of living beings. The two factors of urbanization and industrialization of cities lead to an increase in the concentration of various compounds in the air. This study has been designed and performed to examine seasonal Characterization, Spatial distribution and health risk assessment of sixteen Polycyclic Aromatic Hydrocarbons (PAHs) and eleven Heavy metals bounded PM2.5 at 16 sites in Urban Air of Tabriz, Iran.

glass-fibre filters, peripheral pumps and PMI holder were used with a total 3 L/min flow rate for 24 h sampling PM2.5 every four seasons at 16 sites from 20nd February to 20th December. Proper solvents are consumed for extraction purposes of these Materials. ICP-OES and GC/MS devices used for analyzing purposes and the spatial distribution of PAHs and heavy metals bounded PM2.5 investigated by ArcGIS10.3 software. ELCR values and carcinogenicity risk were also calculated for children and Adults in different exposure pathways.

The annual mean concentrations of PM2.5 were 41.17 µg/m3, ∑16PAHs bounded-PM2.5 were much higher in autumn and winter (217.47 and 178.32 ng/m3) compared to summer and spring (162.61 and 131.89 ng/m3). The annual mean concentrations of Heavy metals bounded-PM2.5 were 138.69 ng/m3. Dermal carcinogenicity risk of exposure with PAHs was high, and ELCR values of Heavy metals also indicated a high risk for adults and children in some stations.

considering the topographic location of the region, Industrial areas and the frequent presence of temperature inversion, such comprehensive researches are needed for assessments and control policies.

Today, with the industrialization of societies, the expansion of urbanization and the increasing trend of population growth, sustainable livelihoods are severely polluted and unfortunately around the world,especially in developing countries, urban air quality is declining. This study is designed to determine the concentration of PM2.5 particles and the effect of meteorological parameters in 14 selected points in the metropolis of Ahvaz.

The sampling of Particulate Matter less than 2.5 µm (PM2.5) was in four seasons (winter, spring, summer and autumn). Sampling was performed using the Environmental Protection Agency, method TO-13A (EPA/TO-13A) guideline. Particle samples were collected on a fiberglass filter with a pore size of 1 µm and diameter of 37 mm. Information about meteorological parameters was also recorded by PHB-318. Finally, the obtained data were analyzed by SPSS and R.

The results showed that the concentration of PM2.5 particles in the metropolis of Ahvaz during the study period is 14 times higher than the value of the guidelines of the World Health Organization (WHO). Also, temperature had a negative relationship and relative humidity and pressure had a direct and positive relationship with concentration of PM2.5 particle. It was found that Zargan, Padadshahr 1and 2, Saadi and 17 Shahrivar stations are the most polluted points compared to PM2.5 particles.

Planning appropriate strategies of air pollution control to reduce is important and necessary.

The increasing trend of petroleum production in Iran and lack of proper and systematic management of waste products in the deposition of petroleum storage tanks have made the existing hydrocarbons as a major hazards to the environment. In this study, the ozonation process was used to remove the petroleum deposits.

In this experimental study, effects of pH, ozone dose, and petroleum hydrocarbons (PHCs) concentration were evaluated. In order to measure the PHCs, using the n-pentanes, the hydrocarbons were first extracted from the environment followed by detection using the GC-FID. The response surface methodology (RSM) was used to evaluate the effect of independent variables on response function.

In this study, the efficiency was calculated 45.47% in the optimal conditions of removing PHCs with respect to the optimal energy consumption for the process. Analysis of variance and regression showed that the fitted model had good agreement with the laboratory results.

The results demonstrated that the advanced oxidation process (AOP) of ozone at high pH levels could be a useful method for the degradation and reduction of heavy hydrocarbons in petroleum waste. However, regarding the energy consumption, it is suggested to use less costly reactions as pretreatment or final treatment steps.

According to the Qur’an, man is the servant and the successor of Allah, the representative of prosperity on earth, and has the responsibility for the universe. This approach will create a constructive human interaction with the environment. Environmental degradation is against the will of Allah. It originates from ignorance, human selfishness, passions, and evil temptations, manifest in greed, arrogance, and extravagance. If humans control these abnormal factors and follow Qur’an teachings, they will enjoy a healthy environment that is a universal right. This paper seeks to study the anthropological theory of the Qur’an and its role in reducing environmental degradation.

Based on the descriptive-analytical design, we explored 70 verses of the Holy Qur’an in which the words samā’, ‘ard, mas’ūl, khalīfah, shaytān, and those are cognate with the Arabic verbs sa-khkha-ra, ha-ra-sa, sa-ra-fa, ki-ba-ra, ha-wā, ‘a-ba-da, and ‘a-ma-ra, as well as the related articles, books, and philological and exegetical sources. We investigated the Qur’an to find the effect of awareness and more attention of human beings to the dimensions of man’s creation to reduce environmental degradation. These issues will be discussed in two parts: 1) the anthropology and the dimensions of human creation in the Qur’an, and 2) the causes of environmental degradation.

This study showed that the survival of life and human enjoyment of a healthy environment depends on enough knowledge of oneself, seeking help from Allah, and following the Qur’anic guidelines. These facts effectively control internal and external causes of environmental degradation, including ignorance, egoism, selfishness, and evil temptations. These actions destroy the roots of greed, arrogance, and extravagance in human beings. For this reason, Allah demands humans to develop earth, care for and rescue it from any destruction, avoid extravagance, and observe justice.

Meditating in the Qur’an, the man knows his creative dimensions and environmental degradation factors that are incompatible with nature and are rooted in some of the inner and outer dimensions of human personality. Hence, he will consciously enjoy sustainable development and maintaining a healthy environment. This behavior will then reduce anomalies in the environment on his part.

Medical waste incinerator is a matter of concern for the environment and public health due to secondary pollutants. The present work aims to evaluate the toxic emissions from medical waste incineration, such as Polychlorinated Dibenzo-Dioxin/Furan (PCDD/Fs), Polycyclic Aromatic Hydrocarbons (PAHs), and the inorganic components in ambient air and ash. Hence, this study discusses several strategies to reduce emissions. For this purpose, searches were done in Scopus, Web of Science, and PubMed databases from 2000 to 2020. After the search, screening was done according to the predefined criteria, 96 papers were finally selected for this study. The results show that the emissions levels depend on many factors like the composition of the feeding, waste type, waste classification, segregation practice, types of incinerators, operation conditions (designed temperature, retention time, and excess oxygen), and air pollution control devices. For instance, emissions of Medical Waste Incinerators (MWIs) rise sharply with a decrease in temperature, increase in oxygen levels and chlorine content in waste, and the absence or weak function of air pollution control systems. This review prepared a comprehensive detailed for decision-makers to help them to understand the environmental consequences of using incinerators. However, there is a gap in finding efficient methods to reduce emissions of incinerators.

Air pollution is one of the main causes for the significant increase of respiratory infections in Tehran. In the present study, we investigated the associations between short-term exposure to ambient air pollutants with the hospital admissions and deaths.

Health data from 39915 hospital admissions and 2459 registered deaths associated with these hospital admissions for respiratory infections were obtained from the Ministry of Health and Medical Education during 2014-2017. We used the distributed lag non-linear model (DLNM) for the analyses.

There was a statistically positive association between PM2.5 and AURI in the age group of 16 years and younger at lags 6 (RR 1.31; 1.05-1.64) and 7 (RR 1.50; 1.09-2.06). AURI admissions was associated with O3 in the age group of 16 and 65 years at lag 7 with RR 1.13 (1.00-1.27). ALRI admissions was associated with CO in the age group of 65 years and older at lag 0 with RR 1.12 (1.02-1.23). PM10 was associated with ALRI daily hospital admissions at lag 0 for males. ALRI admissions were associated with NO2 for females at lag 0. There was a positive association between ALRI deaths and SO2 in the age group of 65 years and older at lags 4 and 5 with RR 1.04 (1.00-1.09) and 1.03 (1.00-1.07), respectively.

Exposure to outdoor air pollutiants including PM10, PM2.5, SO2, NO2, O3, and CO was associated with hospital admissions for AURI and ALRI at different lags. Moreover, exposure to SO2 was associated with deaths for ALRI.

Emerging pollutants such as antibiotics are resistant to biodegradation. The aim of this study was to compare the effect of photocatalytic and Ozonation photolysis on decomposition of Sulfonamide antibiotics (Sulfacetamide, Sulfathiazole, Sulfamethoxazole, and Sulfadiazine) in aquatic environments.

In this study, experiments were conducted discontinuously. The effect of some parameters, including pH, initial antibiotic concentration, ozone concentration, contact time, and concentration of TiO2 on degradation of Sulfonamide antibiotic was investigated. Characteristics of this catalyst were analyzed using FTIR, XRD, SEM, and EDX techniques. The concentrations of antibiotics were measured by an HPLC analyzer equipped with a UV detector at a wavelength of 270 nm.

The highest percentage of sulfonamide removal under optimal conditions (pH 5, initial concentration of antibiotics= 10 mg/l, ozone concentration= 0.22 g/h, and catalyst concentration= 1 g/l) were obtained by photocatalytic and photolysis processes (92.1% and 100%, respectively). Intermediate products produced under these conditions included acetic acid, butyric acid, and low molecular weight products. TOC removal efficiencies of sulfonamides by photocatalytic and ozonation photolys were 80% and 79.6%, respectively.

The study showed that the rate of ozonation photolysis reaction in the removal of sulfonamides was 2.6 times faster than the photocatalytic process.

The management of dental solid wastes (DSWs) in Iran has become essential in recent decades due to population growth and the increased access to dental services. DSWs include hazardous components such as infectious, toxic, chemical, pharmaceutical, and sharp wastes, which could potentially cause severe damage to humans and the environment. This systematic review aimed to investigate the quantity, quality, and status of DSW management in Iran. By identifying the keywords and defining a search protocol, the review was performed in five databases, including one Persian database, to retrieve the related articles regarding DSW in Iran. All the articles containing data on DSW quantity and management in Iran were obtained from Scopus, Web of Science, PubMed, Google Scholar, and SID. In total, 17 articles were selected, and the final articles were selected based on specific criteria. The quantity, composition, storage, and management of DSW management were considered in Iran as a developing country.

The contamination of water by organic pollutant viz. 2,4 DNP compound is recognized as most common environmental concern due to their highly toxic nature, worldwide. Adsorption has attracted much attention as a new technique to remove these contaminants from water and wastewater. The purpose of this study was to introduce an inexpensive adsorbent, dried waste sludge, for removal of 2,4 DNP compound.

At first, sludge was dried at temperature 60 °C. Next, CaCl2 was used to improve adsorption capacity. The removal efficiency of 2,4 dinitrophenol were determined by HPLC at wavelength of 360 nm. In addition, the effects of influencing factors including pH, initial pollutant concentration, contact time, and adsorbent dose were examined. The equilibrium binding were described by Langmuir or Freundlich isotherms and kinetic models.

The results obtained from adsorption process indicated that was 60 min is the equilibrium time. The optimum pH for adsorption for both adsorbents was found to be 7. The optimum concentration of 2,4-DNP was found to be 10 ppm. The results obtained from the present research showed that the removal of the contaminant using modified sludge sorbent was increased from 40.4% to 77.9% when dosage increased from 0.1 to 1.5 g. Equilibrium adsorption data for 2,4 DNP were fitted by using Langmuir, Freundlich and Freundlich adsorption isotherms model, respectively. Also it has been found that adsorption kinetics can be described according to the Pseudo-second order model.

According to results, chemically modified waste sludge showed reasonable adsorption capacity. Therefore, it and can be used as a native alternative to 2,4 DNP compound removal from aqueous environments.

The novel coronavirus disease 2019, namely COVID-19, has been known as a global pandemic by the World Health Organization (WHO). To prevent of COVID-19 spread, most countries including Iran have implemented many preventive measures. This study aimed to evaluate the effect of implementation /non- implementation of the traffic plan on confirmed cases, suspected cases, and mortality cases by COVID-19 as well as on air quality in Tehran.

Daily data of confirmed COVID-19 cases, suspected COVID-19 cases, mortality COVID-19 cases, air pollutants concentration and meteorological variables were obtained from 26 February, 2020 to 5August, 2020 in Tehran megacity and data were compared during the period’s implementation / non-implementation of traffic plan in Tehran.

Our results showed that the non-implementation of traffic plan has been effective in reducing the number of daily confirmed cases, suspected cases and mortality by COVID-19. Also, the average concentration of PM10, PM2.5, NO2, O3, SO2 and CO have reduced significantly during non-implementation traffic plan phase

Our findings indicate that there is a significant association between non-implementation traffic plan and reduce risk of COVID-19 infection.

In the 21st century, air pollution has become a global and environmental challenge. The increase in cases of illness and mortality due to air pollution is not hidden from anyone. Therefore, in this study, we estimated the mortality rate due to cause by air pollution agents (PM2.5) in the southernmost city of Khuzestan province (Abadan city) at 2018-2019.

To estimate the mortality duo to air pollution, data related to PM2.5 particles daily concentrations was received from the Abadan Environmental Protection Organization. The average 24-h concentrations of PM2.5 were calculated using Excel. Then, mortality data were obtained from the Vice Chancellor for Health, Abadan University of Medical Sciences. Finally, by AirQ+ software, each of the mortality in 2018-2019 in Abadan was estimated.

The obtained data indicated that the concentration of PM2.5 particles within the one-year period was higher than the value set by WHO guideline and EPA standard. Which caused the citizens of Abadan to be exposed to PM2.5 more than 8.23 times than the guidelines of the WHO and 5.34 times more than the standard of the EPA. The output of the model used in this study was as follows: natural mortality (462 cases, AP: 38.25%), mortality duo to LC (6 cases, AP: 32.18%), mortality duo to COPD (8 cases, AP: 26.64%), mortality duo to Stroke (86 cases, AP: 71.26%), mortality duo to IHD (183 cases, AP: 68.34%) and mortality duo to ALRI (2 cases, AP: 32.9%).

Planning appropriate strategies of air pollution control to reduce exposure and attributable mortalities is important and necessary

Isfahan is one of the most important industrial cities in central Iran that air pollution has been the biggest challenge of this city in recent years.  So, the present study aimed to investigate the effect of meteorological parameter on particulate matter concentration (PM2.5) in ambient air of Isfahan metropolitan, from March 2019 to March 2020.

In this cross‑sectional descriptive study, 19 sampling points in Isfahan city were chosen using GIS software. Sampling of PM2.5 was carried out for 24 hour using the sampling pilot during the four seasons in the air of Isfahan city. Sampling of PM2.5 was performed using PTFE filters (37mm, 1µ) peripheral pump and Personal Modular Impactor (Based on NIOSH Guideline). The concentration of particles collected on the filter was calculated by gravimetric method. Meteorological parameters including temperature, humidity, pressure, Precipitation, UV and Wind speed were recorded during sampling through portable devices. Finally, for the processing of PM2.5, relationship between PM2.5 concentration and meteorological parameters was assessed by SPSS24 and EXCEL software, and to draw the graphs, Excel and R software were used, respectively. ArcGIS 10.3 was used for the spatial distribution of PM2.5 concentration. The inverse distance weighting (IDW) interpolation technique was applied to generate maps for annual averages.

Seasonal variation trends of PM2.5 particles showed that maximum and minimum annual mean concentrations has happened in Winter and Summer season with the value of 64.06 and 31.32 µg/m3, respectively. Also the citizens of Isfahan are exposed to PM2.5 pollutants 4-5 times more than the EPA-recommended standard (10 µg/m3). The findings of this study also show that there is a positive correlation between PM2.5 particle concentration and temperature, relative humidity and pressure (p<0.05). Moreover, a weak and negative correlation was found between ultraviolet radiation, Precipitation, and Wind speed with PM2.5 particle concentration (p>0.05).

The highest concentrations of particles were observed in winter season. Also, the particle concentration scatter map shows that the central and north and northeast regions of Isfahan are more polluted than other areas. Therefore, to protect the health of citizens of Isfahan, appropriate policies and strategies should be adopted to reduce the concentration of particulate matter and other pollutants in the ambient air of this city`.

 The present study aimed to investigate the effect of meteorological parameters on particulate matter concentration (PM2.5) in ambient air of Karaj metropolitan. 

 In this cross-sectional descriptive study, 17 sampling points in Karaj city were chosen using GIS software. Sampling of PM2.5 was carried out for 24 h using the sampling pilot during the four seasons in the air of Karaj city. Sampling of PM2.5 was performed using PTFE filters, peripheral pump, and personal modular impactor. The concentration of particles collected on the filter was calculated by gravimetric method. Meteorological parameters including temperature, humidity, pressure, cloud coverage rate, ultraviolet (UV), and dew point were recorded during sampling through portable devices. Finally, the relationship between PM2.5 concentration and meteorological parameters was assessed by SPSS24 and Excel software. 

 Seasonal variation trends of PM2.5 particles showed that maximum and minimum annual concentrations have happened in autumn and spring seasons with a value of 67.48 and 19.85 μg/m3, respectively. Furthermore, the citizens of Karaj are exposed to PM2.5 pollutants four times more than the Environmental Protection Agency-recommended standard (10 μg/m3). The findings of this study also show that there is a positive correlation between PM2.5 particle concentration and temperature, relative humidity, and pressure (P < 0.05). Moreover, a weak and negative correlation was found between UV radiation, cloud cover, and dew point with PM2.5 particle concentration (P > 0.05). 

 The highest concentrations of particles were observed in autumn season. Furthermore, the particle concentration scatter map shows that the central and eastern regions and north of Karaj are more polluted than other areas. Therefore, to protect the health of citizens of Karaj, appropriate policies and strategies should be adopted to reduce the concentration of particulate matter and other pollutants in the ambient air of this city.

 This study was conducted to evaluate the effects of ambient concentrations of PM2.5 and PM10 on the health-related aspects including the total mortality, respiratory and cardiovascular diseases, and hospital admissions due to respiratory and cardiovascular diseases in Karaj, Alborz Province, Iran, during 2012–2016 using the AirQ2.2.3 software. The effects of meteorological parameters on the PM2.5 and PM10 levels were also investigated. 

 Meteorological parameters, population, and the pollutant data were obtained from the Department of Environmental Protection, Karaj (Alborz, Iran). Statistical analysis was performed using the SPSS 24 software to study the relationship between the PM2.5 and PM10 concentrations and the meteorological parameters. 

 Our results showed a direct relationship between the PM10 concentration and the temperature (r = 0.34, P < 0.018) and relative humidity (r = 0.37, P < 0.5). However, there was a negative relationship between the PM10 concentration with wind speed (r < −0.328, P < 0.014) and precipitation (r < −0.179, P < 0.327). Similarly, there was a direct relationship between the PM2.5 concentration and the temperature (r = 0.41, P < 0.014) and relative humidity (r = 0.37, P < 0.05). On the other hand, a negative relationship was observed between the PM2.5 concentration with wind speed (r < −0.138, P < 0.010) and precipitation (r < −0.12, P < 0.201). The total number of death, death due to cardiovascular and respiratory diseases, and hospital admissions due to cardiovascular and respiratory diseases were equal to 1619, 1096, 306, and 4822, respectively. 

 The results of this study showed that the concentrations of PM2.5 and PM10 should be reduced through applying the management strategies to improve the health of the residents in Karaj city.

One of the most important factors in the contamination of aquatic ecosystems is agricultural pesticides. Paraquat is a water-soluble and non-selective herbicide, which has adverse health effects, such as respiratory distress and even death. This study aimed to evaluate the degradability of paraquat toxins using photochemical oxidation processes based on hydrogen peroxide (UV/HP) and persulfate (UV/NaPS/Fe2 +).

This experimental study investigated the effects of pH variables, concentrations of UV/HP and UV/NaPS/Fe2+, as well as the initial concentration of the pollutant on paraquat toxicity removal in a laboratory scale using a batch reactor of one liter. Moreover, the concentration of the residual paraquat and the amount of organic carbon removal were measured using High Performance Liquid Chromatography equipped with a visible Ultraviolet (UV) detector at 259 nm and a Total Organic Carbon (TOC) meter.   

The UV/HP and UV/NaPS/Fe2 + processes were able to remove 87.75% and 92.31% paraquat, respectively, at 120 min under optimum conditions. In addition, the amount of TOC removal in the UV/HP and UV/NaPS/Fe2 + processes  were 77.29% and 82.16%, respectively. The results showed that the kinetics of the UV/HP and UV/NaPS/Fe2 + processes  followed the first-order reaction.

The UV/NaPS/Fe2 + process was more effective than that of UV/HP regarding paraquat removal. As a result, the studied processes are proposed as effective, fast, and efficient methods to remove paraquat from aqueous solutions, which is economically feasible due to the low reaction time. The use of this process is also recommended as a complete refinement or pre-treatment process.

Attributable health impacts of air pollution result in economic costs to societies. In this study, the WHO AirQ+ model was used to estimate the health impacts and health-related economic costs of PM2.5 and O3 in Karaj, the fourth largest city in Iran, from March 2015 to March 2016.

For PM2.5, long-term mortality due to ischemic heart disease (IHD), lung cancer, chronic obstructive pulmonary disease (COPD), and morbidity such as acute lower respiratory infection (ALRI), and short-term cardiovascular and respiratory hospitalizations were calculated. For ozone, short-term mortality and hospitalizations due to cardiovascular and respiratory diseases were estimated. The human capital method (HCM) was used to monetize the mortality impact attributed to selected air pollutants. Direct and indirect costs of morbidity were estimated using available local data on the costs related to cardiovascular and respiratory diseases.

The total number of IHD, COPD, LC and ALRI deaths attributed to PM2.5 in selected age groups was 576. The total number of cardiovascular and respiratory deaths attributed to O3 was 46 cases. For hospitalization, the aggregate cardiovascular and respiratory hospital admissions for both pollutants were 552. The total economic loss due to mortality and morbidity from selected health endpoints was approximately 44 million USD.

Despite the limitations, such methodologies can be useful for policy-makers. Therefore, there is a compelling need to conduct cost of illness’s studies in other areas.

Quantification of the attributed effects of air pollution determines the impact of air pollutants on the community and shows the critical condition of air quality.
This study aimed to quantify and estimate the cardiovascular and respiratory diseases attributed to PM10 in Urmia during 2011-2016.

In this descriptive-analytic study, at first, hourly data of pollutant PM10 concentrations were received from air pollutants station located in the Department of Environmental Protection. The data were evaluated using AirQ2.2.3 software after primary and secondary processes and filtering.

The results showed that the mean annual concentration of PM10 during 2011-2016 was 88.66, 92.45, 81.22, 78.38, 113.78, and 92.67 μg /m3, respectively. The number of hospitalized cases due to respiratory diseases attributed to PM10 in this period was 486, 525, 459, 453, 684, and 552, respectively, and the number of cases due to cardiovascular diseases was 188, 203, 177, 175, 263, and 213, respectively.

Considering the attributed health effects of PM10, the necessary measures should be taken to identify the causative agents and to understand the mechanisms of these processes and correct them.

Advanced Hybrid Oxidation Processes(AHOPs) have the ability to romove the pesticides. The aim of this study was optimization of sono-electroperoxone process (US-EP) in the removl of 2.4 D from aqueous via RSM.

The pilot that used to in this study included an ozone generator, an ultrasonic generator and an electric direct current source. Two graphene electrodes as  anodes and two titanium electrodes as cathodes were used. This electrodes connected to DC as direct monopolar connection. pH, direct electric current, ozone gas concentration, reaction time and initial 2,4 D concentration were optimized as  an independet and inffluence parameters. COD and TOC removal, kinetics of reaction, synergyist effects of variables, presence of radical scavangers and optimal electrolyte concentration were determined in optimum condition.

Efficiency of process was 55-90 percent in different runs. The optimized conditions are modeled was pH=6/04, ozone concentration equal to 2 mg/L.min, electric current equal to 1 amperes, 2, 4 D concentration equal to 30.3 mg/L and in 103 minutes reaction time in the presence of ultrasonic waves with frequencies 40 kHz. The Efficiency of US-EP in this situation was 95 percent. COD and TOC removal were 71% and 63%, respectively. The kinetics of the process follow the first order kinetics. The P-Value and F-value was determined by ANOVA analysis 0.0033 and 24.19 respectively, which indicates the model is significant. R2, R2 adj and R2 predicted were 0.94, 0.84 and 0.89, respectively.

US-EP process had a high performance in removing of 2.4 D. The process is an environmentally friendly process because don’t use of chemicals.

Tehran city with the most population, about 4 million cars, million liters of fuels consumption, the presence of polluting industries such as petrochemicals and refineries, thermal power plants, and surrounding industrial towns is considered as one of the most populous and most polluted cities in the world . This study aims to investigate the trend of variation in air quality index in Tehran.

In this descriptive and evaluative study, the air quality data of 7 monitoring stations in 2012 were taken from the Tehran Department of Environment and Tehran Air Quality Control Company(AQCC). The calculation of AQI was done according to the EPA guidelines.

According to the results of this study, highest AQI averaging for 2016 (208.49±42.13) and the lowest for 2011 (134.13±46.80). Also observed that during the study period PM2.5 particles with an average of 71.59% is the most important factor in increasing the air quality index.

It was observed that in the cold seasons of the year, due to the temperature inversion phenomenon in Tehran and the increase in the concentration of pollutants, air quality in most regions of Tehran is in unhealthy conditions, but in other season of the year the air quality is in moderate condition. Among the index pollutants, particulates are the major cause of Tehran’s air quality decline.

Chlorpyriphos is one of the most important widely used pesticides in agriculture, which is discharged into the water resources and is associated with various adverse effects on human health and the environment. The purpose of this study was to evaluate chlorpyriphos removal by chitosan graphene oxide composite form aquatic solution. The characteristics of adsorptive material was determined by scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FT-IR) and X-ray diffraction (XRD). First, the pHzpc was determined.Then, the effect of different parameters such as the amount of adsorbent, contact time, pH, initial concentration of chlorpyriphos and temperature were studied through batch method in order to obtain optimal conditions for the adsorption process. Then optimal pH under constant conditions was determined. Isotherm, kinetic and thermodynamic equations  of adsorption were investigated and concentration of chlorpyriphos was determined. The highest removal efficiency was 93% which was observed at pH=5, 60 minutes contact time and 0.8 g/L of adsorbent concentration and initial concentration of 1 mg/l for chlorpyriphos. The results showed that adsorption process followed pseudo-second order kinetics and equations data followed Langmuir isotherms model. Evaluation of thermodynamic parameters showed that the process of chlorpyrifos removal was endothermic and spontaneous. According to the results of this study chitosan graphene oxide composite can be a suitable adsorptive material for removal of chlorpyrifos from aquatic solutions.

Bioaerosols enter into human body through various ways (inhalation, ingestion or skin absorption). The aim of this study was to investigate the type and density of the predominant bacteria in two seasons - cold and warm - in the kitchen air of restaurants. This descriptive cross-sectional study was conducted on the air of restaurants' kitchen in Babol. Sampling was performed by using a personal sampling pump with impinger tank using a flow rate of 4 l/min during 50 minutes. Counting the colonies in the air was determined in terms of CFU/m3 and the type of grown bacteria was identified using different tests, such as Gram staining and biochemical methods. Temperature and humidity were recorded at the time of sampling, too. Totally, 120 samples of bacteria were taken from the indoor air of kitchens with and without air conditioning. The results showed that the highest and lowest densities of bacteria in cold season were 15 CFU/m3 and 63.7 CFU/m3, and in warm season, they were 19.6 CFU/m3 and 80 CFU/m3, respectively. The predominant bacteria were Gram-positive bacteria in the air of kitchen but Bacillus and Micrococcus were the most frequent. The results showed that due to humidity and the temperature (warmer), bacterial density was higher in summer than winter. The concentration of bacteria in the kitchen and restaurant was also less than WHO recommendation and guide values ACGIH (up to 500 CFU/m3), respectively. So, air quality was found to be good and acceptable in terms of the restaurant kitchen.

Milk is considered as one of the most complete foods, consumption of raw milk contained with aflatoxin M1 and antibiotics has raised consumer concerns. The aim of this study was to determine the level of aflatoxin and antibiotic residues in raw milk in Bojnurd, Khorasan province, Iran. In this study, 40 samples of raw milk from their distribution centers in the city of Bojnourd, were taken randomly in summer and fall of 2016. Samples were evaluated for aflatoxin and antibiotic residues by ELISA method and Coupons kit respectively. Descriptive statistics including means and standard deviations were used to summarize the data. Data was analyzed with SPSS 19. According to the results, no residues of antibiotics were found in raw milk and the aflatoxin concentrations were between 5.1 and 65 ng per ml and the levels were lower than the Iran standards in all samples. According to the results, antibiotics residues and aflatoxin M1 levels in raw milk of Bojnoord city are within the acceptable level. However, it is recommended to evaluate these parameters in all seasons.