Method validation of a QuEChERS-GC-uECD method for the pesticide analysis of pyrethroids in mango

Name: Padungrat Toopmuang

Organization : Department of Agriculture. Plant Standard and Certification Division

Email : kaipadungrat@gmail.com

Name: Pattama Prangchan

Organization : Department of Agriculture. Plant Standard and Certification Division

Name: Juthathip Thepsit

Organization : Department of Agriculture. Plant Standard and Certification Division

keyword: QuEChERS-GC-uECD method

LCSH: Pesticide -- Analysis

LCSH: Pyrethroids -- Analysis

LCSH: Mango

Abstract: ethod validation for the analysis of pyrethroid pesticides in mango using GC-μECD is essential for laboratories to ensure accurate and reliable test results. Laboratories are required to validate parameters and criteria in accordance with SANTE/11312/2021, including linearity of analytical curves, instrument and method limits of detection and quantification, accuracy, and precision. The QuEChERS method (Quick, Easy, Cheap, Effective, Rugged, and Safe) was used to extract pyrethroid pesticides. The Calibration curves for the pesticides were linear in the range of 10–180 μg/kg, with correlation coefficients (r) exceeding 0.995. The limits of detection (LOD) and quantification (LOQ) were 5 μg/kg and 10 μg/kg, respectively. Recovery and precision were evaluated by spiking blank mango samples with 10, 50, and 100 μg/kg of each pesticide, with five replicates at each concentration level plus a blank sample. The average recovery rates obtained for each pesticide ranged from 74.55% to 113.17%, with relative standard deviations ranging from 2.77% to 13.55% for all evaluated concentrations. This demonstrates the excellent repeatability of the method. Overall, the method validation results demonstrate that the GC-μECD method can be used to analyze pyrethroid pesticides remaining in mango

King Mongkut's University of Technology North Bangkok. Central Library

Address: BANGKOK

Email: library@kmutnb.ac.th

Created: 2024

Modified: 2024-12-02

Issued: 2024-12-02

บทความ/Article

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BibliograpyCitation : In Kasetsart University. Faculty of Science. The Pure and Applied Chemistry International Conference 2024 (PACCON 2024) (pp.509-513). Bangkok : Kasetsart University, 2024

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