فهرست مطالب

Journal of Chemical Health Risks
Volume:3 Issue: 1, Winter 2013

  • تاریخ انتشار: 1392/02/03
  • تعداد عناوین: 8
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  • Gh. Vaezi, M. Pourkazem, F. Toosi, F. Aliabadi Page 1
    Today bleach and detergents are being frequently used and some people use their mixture for more cleaning. Because of chemical interaction of bleach and detergent, chlorine gas was released and thereby it could be dangerous for human health. This study examined the effects of exposed toxic mixture of bleach and detergent on the Mucosa layer and Lamina mucosa conjunctiva in the mice. In this study, 42 adult male mice NMRI race weighing 35-40 gr and from age 8 to 10 weeks were divided into 6 experimental groups and one control group. Experimental groups 1-2-3 with the use of chamber, the exposed 20 minutes were exposed to spray the amount 1 cc of mixture of bleach and detergent by nebulizer. Experimental groups 4-5-6 were for 35 minutes to inhale the same amount of material. Mice killed at 24-48-72 hours after exposed and the Mucosa Layer and Lamina mucosa conjunctiva tissue was studied pathology. In the study of microscopic sections prepared of mouse mucosa layer and Lamina mucosa conjunctiva tissue experimental group comparison with the control group, significant decrease was observed in mucosa layer the have (p ≤ 0.001) and significant decrease was observed in the Lamina mucosa have(p ≤ 0. 01, p ≤ 0.001). As a result, increasing the exposed time of mixing bleach and detergent, as time passed, increasing the tissue damage and changes.
  • M. Ghaedi, N. Mosallanejad Page 7
    Adsorption is a fundamental process in the physicochemical treatment of wastewaters which industries employ to reduce hazardous organic and inorganic wastes in effluents. In recent years the use of low-cost adsorbents has been widely investigated as a replacement for the currently costly methods of removing heavy metal ions from wastewater. It is well-known that cellulosic waste materials can be obtained and employed as cheap adsorbents and their performance to remove heavy metal ions can be affected upon chemical treatment. In this study, the use of some of low cost adsorbents for the removal of heavy metals from wastewater has been reviewed.
  • Francisco Prieto Garc, Iacutea., Otilio A. Acevedo Sandoval, Judith Prieto MÉndes Page 23
    Geological factors, such as damages, can cause health determinants in people, which were a little-studied and if they have been raised on occasion, usually referred to no communicable diseases. The aim of this work, which is a more or less updated bibliography, has been to develop a holistic idea for a better understanding of a problem and force latent or potential risk that they can carry and consider scientific basis infectious diseases especially complex. In essence, the focus of ecosystem health that should be considered in terrestrial ecosystems. It also provides the basic elements for the development of new research in this field.
  • Z. Torabi, A. Mohammadinafchi Page 33
    In this paper effect of SiO2 nanoparticles was investigated on potato starch films. Potato starch films were prepared by casting method with addition of nano-silicon dioxide and a mixture of sorbitol/glycerol (weight ratio of 3 to 1) as plasticizers. SiO2 nanoparticles incorporated to the potato starch films at different concentrations 0, 1, 2, 3, and 5% of total solid, and the films were dried under controlled conditions. Physicochemical properties such as water absorption capacity (WAC), water vapor permeability (WVP) and mechanical properties of the films were measured. Results show that by increasing the concentration of silicon dioxide nanoparticles, mechanical properties of films can be improved. Also incorporation of silicon dioxide nanoparticles in the structure of biopolymer decrease permeability of the gaseous molecules such as water vapor. In summary, addition of silicon dioxide nanoparticles improves functional properties of potato starch films and these bio Nano composites can be used in food packaging.
  • R. Kazemi Darsanaki, M. Azizollahi Aliabadi, M. Mohammad Doost Chakoosari Page 43
    Aflatoxin M1 (AFM1) is the hydroxylated metabolite of aflatoxin B1 (AFB1) that it can be found in milk and dairy products. In this study, ELISA (Enzyme Linked Immunosorbent Assay) technique was used for detection of AFM1 in ice-cream in Guilan province (Northern Iran). A total of 90 ice-cream samples was randomly obtained from different supermarkets. In 62 of the 90 ice-cream samples examined (68.88%), the presence of AFM1 was detected in concentrations between 8.4 -147.7 ng/l. The mean level of AFM1 in positive samples was 40.36 ng/l. AFM1 levels in 11 samples (12.22%) were higher than the maximum tolerance limit (50 ng/l) accepted by ISIRI, European Community and Codex Alimentarius.
  • H. Parvizi Mosaed, S. Sobhan Ardakani, M. Cheraghi Page 47
    Today oil removal from contaminated soil by new methods such as bioremediation is necessary. In this paper, the effect of chemical fertilizers and aeration on bioremediation of oil-contaminated soil has been investigated. Also the control group, (bioremediation of petroleum hydrocarbons in contaminated soil without treatment by chemical fertilizers and aeration treatment was examined. The condition of experiment is as following: those were treated 70 days in glass columns (30×30×30cm dimensions), ambient temperature (25-30 0C), relative humidity 70%, aeration operation with flow 0.7 lit/min. The total number of heterotrophic bacteria of break down oil and the total of petroleum hydrocarbons were analyzed using gas chromatography analysis. all experiments were replicated three times. The microbial population results for control soil, treated soil by aeration and treated soil by aeration and chemical fertilizers columns are 2.3×105, 1.04×1010, and 1.14×1011 CFU/gr, respectively. The concentrations of total petroleum hydrocarbons of remaining are 46965, 38124, and 22187 mg kg-1respectively. The obtained results show that the aeration operation and chemical fertilizers have effective role on degradation of petroleum hydrocarbon by oil degrading bacteria from soil.
  • M. Salahinejad, F. Aflaki Page 55
    The dispersive liquid–liquid microextraction (DLLME) method for determination of Pb+2 and Cd+2 ions in the environmental water samples was combined with inductively coupled plasma-atomic emission spectrometry (ICP-AES). Ammonium pyrrolidine dithiocarbamate (APDC), chloroform and ethanol were used as chelating agent, extraction solvent and disperser solvent, respectively. Some effective parameters on the microextraction and the complex formation were selected and optimized. These parameters included extraction and disperser solvent type as well as their volume, extraction time, salt effect, pH, sample volume and amount of the chelating agent. Under the optimum conditions, the enrichment factor of 75 and 105 for Cd+2 and Pb+2 ions respectively was obtained from only 5.00mL of water sample. The detection limit (S/N=3) was 12 and 0.8ngmL−1 for Pb and Cd respectively. The relative standard deviation (RSDs) for five replicate measurements of 0.50 mgL−1 of lead and cadmium was 6.5 and 4.4 % respectively. Mineral, tap, river, sea, dam and spiked water samples were analyzed for Cd and Pb amount.
  • B. Akbari, Adergani, S. Eskandari, N. Bahremand Page 65
    Sodium benzoate and potassium sorbate are two major chemical preservatives which are used in Doogh (Iranian traditional dairy drink). In this study, a total of 27 commercial brands of highly consumed of Doogh samples were analyzed. The means and standard deviation for concentration of these preservatives based on HPLC results for analysis of benzoate and sorbate were 195·9 (SD 1·8) and 328·8 (SD 2·1) mg.Kg-1 respectively. The minimum and maximum of benzoate content in various brands were 18.3 and 2345.1 mg.Kg-1 and for sorbate were not detected and 4961.3 mg.Kg-1 respectively. The study revealed that there was not significant difference in preservative concentration in the samples that belonged to various dates. However, a few samples had a high preservative concentration, which could be a risk factor for human health, especially when their intake was being occurred by various foodstuffs simultaneously.