Tandem Mass Spectrometric Analysis of Persistence and Kinetics of Tetraniliprole and its Metabolite (BCS-CQ 63359) in Pigeon Pea.

Abstract

QuEChERS method of extraction followed by detection with Liquid Chromatograph Mass spectrometry was carried out to determine persistence of tetraniliprole and its metabolite in pigeon pea. The mean recovery of tetraniliprole and its metabolite BCS-CQ 63359 in immature and mature pods, seeds and grains of pigeon pea and soil were in the range of 76.38-105.68. The residues of tetraniliprole in immature pod with seeds were observed to be 0.03 and 0.05 mg kg^-1 at two hours after application at single (X) and 1.25X dose, respectively. The residues in mature pods and mature seeds (dry) collected during harvesting of pigeon pea did not reveal any residues means reached below the LOQ (0.01 mg kg^-1). Metabolite BCS-CQ 63359 was found below LOQ even in samples of collected at two hours after spray. There were no residues detected in soil samples taken at harvest time. Tetraniliprole's half-lives at X and 1.25X doses were determined to be 4.39 and 5.81 days, respectively.