Improved QuEChERS and solid phase extraction for multi-residue analysis of pesticides in paddy soil and water using ultra-high performance liquid chromatography tandem mass spectrometry
Two new sensitive and selective methods were developed to quantify thirteen pesticides in soil and water. The method developed in soil was optimized and modified based on the Quick, Easy, Cheap, Effective, Rugged, and Safe (QuECHERS) procedure, followed by a dispersive solid phase extraction (dSPE...
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Main Authors: | , , , , , |
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Format: | Article |
Language: | English |
Published: |
Elsevier
2019
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Online Access: | http://psasir.upm.edu.my/id/eprint/80187/1/Improved%20QuEChERS%20and%20solid%20phase%20extraction%20for%20multi-residue%20analysis%20of%20pesticides%20in%20paddy%20soil%20and%20water%20using%20ultra-high%20performance%20liquid%20chromatography%20tandem%20mass%20spectrometry.pdf http://psasir.upm.edu.my/id/eprint/80187/ https://www.sciencedirect.com/science/article/pii/S0026265X18309846 |
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Summary: | Two new sensitive and selective methods were developed to quantify thirteen pesticides in soil and water. The
method developed in soil was optimized and modified based on the Quick, Easy, Cheap, Effective, Rugged, and
Safe (QuECHERS) procedure, followed by a dispersive solid phase extraction (dSPE) clean-up technique. The
method developed in the water samples was based on glass fiber and nylon filtration, followed by the solid phase
extraction (SPE) clean-up technique. Both methods used ultra-high performance liquid chromatography coupled
with tandem mass spectrometry (UHPLC-MS/MS) for analysis. The developed method showed good linearity at
calibration points ranging from the instrumental quantification limit (IQL) to 500 ng mL−1, and the correlation
coefficients (R2) for all of the target analytes were higher than 0.9990. The method showed recoveries ranging
from 74% to 111% in soil and 77% to 117% in water. The method detection limit (MDL) for all of the target
analytes ranged from 0.03 ng g−1 to 0.4 ng g−1 in soil and 0.1 ng L−1 to 10 ng L−1 in water. Both methods were
applied to field paddy soil and water samples to quantify pesticide residues in the samples. Isoprothiolane was
the highest concentration pesticide in paddy soil (34.81 ng g−1), whereas chlorantraniliprole (11.83 ng mL−1)
was the highest concentration pesticide in the paddy water sample. Based on the instrument and method performance
validation results, the developed methods can be applied as part of pesticide residue analysis in environmental
and agricultural matrices, thus aiding in regulating and monitoring pesticide usage in agricultural
fields. |
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