مشخصات پژوهش

The entering and accumulation of heavy metals into agricultural lands are mainly caused by industrial activities, fertilizers, animal manures, municipal sewages, pesticides and composts. To evaluate the contamination levels in some edible vegetables caused by cadmium and lead, the concentrations of these elements were investigated in cultured samples collected from Jiroft city. During January to March, 150 samples (50 samples per month) of leek, coriander, dill, parsley, and fenugreek were selected from vegetable fields. Then the samples were separately washed with distilled water and rinsed, after that they were dried thoroughly. At this point, acid digestion was performed on the samples and the concentrations of soluble heavy metals were measured using atomic absorption machine (Aanalyst-400 made in America).SPSS software version 19 was used for data analysis. It was found in this study that the average concentration of cadmium in vegetables is relatively reasonable and in the standard range, but the average concentration of lead in most vegetables is in the high levels of the standard range.