A Rapid, Efficient, Reliable Method for Simultaneous Determination of Pesticide Residues in Green Chilli by Gas Chromatography-Mass Spectrometry

Abstract

This study describes a rapid, efficient and reliable method for the simultaneous determination of 42 pesticide residues in green chilli using gas chromatography single quadrupole mass spectrometry with selected ion monitoring (GC-SQ/MS-SIM) mode. QuEChERS (quick-easy-cheap-effectiverugged- safe) acetonitrile-based extraction technique was used prior to GC-MS analysis, followed by cleanup with primary-secondary amine (PSA). Linearity (r2 > 0.99) within 50-1000 μg/kg with negligible matrix interferences was achieved by method optimization. The percentage recovery evaluated at 50, 100 and 250 μg/kg level of spiked concentration was observed to range between 75-127% with RSD (< 9.1%) for the majority of analytes. The expanded uncertainty was measured below 48% for all target residues. The limit of detection and limit of quantification ranged between 1-63 μg/kg and 4-150 μg/kg, respectively. The developed method was observed to be specific, accurate, reproducible and user friendly for determining different pesticides in green chilli crops.

Comparison and Analysis of Several Quantitative Identification Models of Pesticide Residues Based on Quick Detection Paperboard

“…However, the misuse of pesticides is also widespread. At present, the methods used to measure pesticide residues in vegetables and fruits include enzyme inhibition method [6][7][8], biosensor method [9][10][11][12], chromatographic detection method [13][14][15][16][17], etc.…”