Evaluation of Lead and Cadmium Concentration of Arak City Soil and Their Non-Cancer Risk Assessment in 2017

Lead (Pb) and cadmium (Cd) are heavy metals that are dangerous for human health. This research was done to evaluate the Pb and Cd concentration of Arak city soil and assess their non-cancer risk in 2017. This descriptive study was carried out in 2017 with sampling of five stations in different parts of Arak city and from each station 12 samples were prepared and the mean of soil Pb and Cd concentration was determined using atomic absorption spectroscopy. Additionally, non-cancer risk of heavy metals sorption in surface soils via inhalation pathways for children and adults were evaluated using the method suggested by EPA ( the United States Environmental Protection Agency). Data were analyzed using descriptive tests. The greatest risk of non-cancer disease from Pb and Cd respiration belonged to Arak terminal station with the amount of 9.6 and 3.4, respectively. In Sardaran and Shohada square, the risk of non-cancers disease via inhalation pathway was greater than one. The results of heavy metal geochemical deposit value were also confirming this matter clearly. The results of this research showed that soil pollution with heavy metals can enter heavy metals to human body via inhalation pathway in the long term. However, the type and amount of pollutant and geographic location are of high significance