نوع مقاله : مقاله پژوهشی
عنوان مقاله [English]
The aim of this study was to investigate the contamination of deposited dust binding and soil surface (5-10 cm) to heavy metals cadmium, lead and zinc in the prevailing wind direction (North West - South East) Khash city's landfill. First, by observing the status of the current landfill deals and Dust samples of 10 stations in the study area was prepared in January 2013. After preparation of the samples, the concentrations of heavy metals using atomic absorption were measured. Igeo, CF and ecological risk calculated using the formula were determined. The average concentration of cadmium, lead and zinc, respectively, 3.28, 83.1, 1190.65 mg/kg and in soil surface 3.65, 140.71 and 1304.02 mg/kg respectively was achieved. The Igeo index was classified as moderate to severe pollution, pollution factor of very high degree of pollution and ecological risk was significant. The results of data analysis and estimate that 1 almost no pollution control stations and other stations strong have pollution of heavy metals zinc, lead and cadmium.