Assessment of Heavy Metals in Potato and Onion Supplies in Rasht

Background: The entry of heavy metals into the food chain is an important environmental challenge for humans. Due to their potential accumulating in body, different aspects hazard posed by should be carefully examined. Objectives: present study was conducted determine concentrations such as Arsenic (As), Cadmium (Cd), Chromium (Cr), Lead (Pb), and Nickel (Ni) tuber crops i.e., potatoes onions Rasht, north Iran. Materials & Methods: A total 140 that were planted difference cities Iran randomly procured from city's fresh market spring during ten-day intervals. acid digestion method used preparation samples measured using Inductively Coupled Plasma Optical Emission Spectrometer (ICP-OES). Results: mean concentration Pb, Cd, Cr, Ni found potato 0.057, 0.079, 0.299, 0.190 mg/kg dry weight, respectively. onion 0.067, 0.020, 0.275, 0.235 In both products, amount As less than device’s detection limit (1.187 ppb). products received northern region higher central southern parts Conclusion: results this showed Pb normal range. Similarly, under standard limit, but it some samples. Also, Cr limit.