Assessment of the Kinetic reaction and residue Determination of four insecticides using High Liquid Performance Chromatography Technique on Tomato Fruits

Abstract

The imidacloprid, avaunt, karate, and coragen residues in the fruits were investigated. The results show that imidacloprid residues started to decrease over the time to reach 313.5, 180.93, and 131.15 into 0 mg L respectively after 14 days of the application. While karate residues slowly decreased into   62.88 mg L^-1 after 14 days of the application. The kinetic assessment, the dissipation of imidacloprid, avaunt, and coragen residues underwent the first order model with the degradation rate 0.322, 0.395, and 0.322 a day. Subsequently, the half-life scored 2.14, 1.75, 6.72, and 2.14 days for the same order above respectively. Whilst Karate undergoes the second order model, giving 0.009 a day degradation rate. This resulted in a slow breakdown with the half-life being 770.16 days based on the current result. Overall, these results suggest that the use of those insecticides are safe and not be tended as harmful due to their fast degradation, except karate needs extra time to reach at low level.