BIOACCUMULATION OF NICKEL IONS IN TOMATO AND CUCUMBER ORGANS

When observing the bioaccumulation of nickel ions in the plant organs of tomatoes and cucumbers, the highest amounts are mainly in the roots, from 5.94 mg/kg to 7.60 mg/kg of contaminated soil in tomatoes, 11.88-15.19 times the MPC, and less in cucumber roots compared to tomato roots. bioaccumulation was observed, 3.35-5.38 mg/kg, and 6.71 to 10.77 times higher bioaccumulation than MPC. This situation is the opposite in the stem part, where bioaccumulation was observed in tomato plant stem up to 2.58 times MPC, and in cucumber up to 5.00 times, in leaves 1.88-3.28 times MPC in tomato and 1.45-1.93 times in cucumber leaves, respectively. During the experiments, bioaccumulation of 1.05 mg/kg was found in both plants in the fruits of the plant, which was found to be 2.10 times higher than MPCon average, forming the following decreasing ecological series: - in tomato organs - root→leaf→fruit→stem; - in cucumber organs - root→stem→fruit→leaf.