BEHAVIOR OF INSECTICIDES LAMBDA-CYHALOTHRIN, CHLORANTRANILIPROLE AND THIAMETHOXAM IN BRINJAL SOLANUM MELONGENA LINN.

Abstract

The behavior of lambda-cyhalothrin, thiamethoxam and chlorantraniliprole residues in brinjal crop was examined with Reverse Phase-High Performance Liquid Chromatography (RP-HPLC) using the modified QuEChERS method. As brinjal is consumed without peeling, it is important to study the pesticide residue and an effective procedure is needed to eliminate the residue before consumption. Decontamination methods were studied, in which treatment with (2%) brine solution was found to be the most effective decontamination method. The initial deposits of chlorantraniliprole, lambda-cyhalothrin and thiamethoxam sample treated with warm (2%) brine solution were 0.33 mg kg-1, 0.20 mg kg-1 and 0.35 mg kg-1. Results revealed that the half-life of chlorantraniliprole, thiamethoxam and lambda-cyhalothrin was found to be 1.30, 1.30 and 1.02 days. Tsi of chlorantraniliprole, thiamethoxam and lambda-cyhalothrin were 5.29, 0.94 and 1.32 days which proves the highest decontaminating method in brinjal.