Background and Aim: Heavy metal pollution is one of the major problems of environmental and food safety concerns. This study was done to determine the concentration of heavy metals such as Cadmium, Lead, Zinc and Copper in vegetables included cucumber, tomato, parsley and Persian leek
Material and Methods: This research is a descriptive study. For this purpose, samples were collected four times and each time from three parts of Sanandaj vegetable field during summer of 2015.. Overall, in this study, 12 samples were examined for each product. The samples were digested using acid digestion method. The concentration of heavy metals Cd, Pb, Zn and Cu were determined by atomic absorption Model (Phoenix986, Biotec0. Data were analyzed using SPSS software and significance level of 0.05.
Results: Mean concentration of Pb in samples of cucumber, tomato, parsley and Persian leeks were up to 10.2, 4.8, 12.5 and 13.3 times exceeded the maximum allowable limits of WHO/FAO, respectively. Mean±SE of, Cd, Cu, Zn and Pb concentration in samples of cucumber were 0.088±0.055, 3.88±0.51, 51.44±6.1 and 1.02±0.26 mg/kg wet weight, respectively and in tomato were 0.022±0.038, 0.79±0.1, 16.55±2.33 and 0.48±0.65 mg/kg wet weight, respectively and in parsley were 0.12±0.65, 6.69±0.1, 28.55±2.88 and 1.25±1.98 mg/kg wet weight, respectively and in persian leeks 0.131±1.3, 5.55±0.15, 22.21±2.12 and 1.33±2.21 mg/kg wet weight, respectively. The mean concentrations of copper and Pb in parsley and leek was more than cucumbers and tomatoes. Pb concentrations in Leek were more than other products.
Conclusion: Mean concentrations of Pb in cucumbers, tomatoes, parsley and Leek samples was exceeded the maximum allowable limits of WHO/FAO and mean concentration of Pb in Leek was higher than other products. The maximum contamination to heavy metals was observed in lead, cadmium, zinc and copper, respectively.