Study on matrix effects generated during the determination of 15 pesticide residues in six types of tea using QuEChERS pre-treatment combined with Gas chromatography-tandem mass spectrometry

CHEN Lu; LI Huai-ping; WANG Gu-xi; TANG Xiang-kai; FENG De-jian; WEI Yu-ting

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CHEN L, LI H - P, WANG G - X, et al. Study on matrix effects generated during the determination of 15 pesticide residues in six types of tea using QuEChERS pre-treatment combined with Gas chromatography-tandem mass spectrometry [J]. Fujian Journal of Agricultural Sciences，2024，39（X）：1−10

Citation:

CHEN L, LI H - P, WANG G - X, et al. Study on matrix effects generated during the determination of 15 pesticide residues in six types of tea using QuEChERS pre-treatment combined with Gas chromatography-tandem mass spectrometry [J]. Fujian Journal of Agricultural Sciences，2024，39（X）：1−10

Citation:

CHEN L, LI H - P, WANG G - X, et al. Study on matrix effects generated during the determination of 15 pesticide residues in six types of tea using QuEChERS pre-treatment combined with Gas chromatography-tandem mass spectrometry [J]. Fujian Journal of Agricultural Sciences，2024，39（X）：1−10

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Study on matrix effects generated during the determination of 15 pesticide residues in six types of tea using QuEChERS pre-treatment combined with Gas chromatography-tandem mass spectrometry

CHEN Lu^{1, 2
,},
LI Huai-ping^{1, 2},
WANG Gu-xi^{1, 2},
TANG Xiang-kai^{1, 2},
FENG De-jian^{1, 2},
WEI Yu-ting³

1.
NationgalInstitute Of Measurement And Testing Technology Institute Of Biology, Chendu, Sichuan　610021, China
2.
Sichuan Provincial Key Laboratory of Tea Standards and Testing Technology, Chendu, Sichuan　610021, China
3.
Xichang Water Supply and Drainage Co., Ltd, Xichang, Sichuan,　615000, China

Received Date: 2023-12-19
Rev Recd Date: 2024-04-19

Available Online: 2024-07-10

Abstract

Abstract

Objective The matrix effects generated during the determination of 15 pesticide residues in six types of tea by gas chromatography-tandem mass spectrometry was analyzed, and the alternative matrices that can be used for simultaneous processing of common batch samples in daily detection was discussed . Methods Tea samples were pre-treated with QuEChERS to prepare solvent standard curves and matrix standard curves with the mass concentrations ranging from 0.01 to 032mg/L, and then the matrix effects were calculated after samples determined by GC-MS/MS. Results The results showed that an enhanced matrix effect was generated during the determination of 15 pesticide residues in six types of tea which the strong matrix effect was the main one. The matrix effect ranged from 1.35%～411.58%, and the strong, medium, and weak matrix effects were 73.33%, 23.33%, and 3.33%, respectively. When black tea was using as an alternative matrix, an enhanced matrix effect was generated during the determination of 15 pesticide residues in six types of tea which the week matrix effect was the main one, The matrix effect ranged from 0.62%～59.22%, and the strong, medium, and weak matrix effects were1.33%, 14.67% and 84.00%. When the mix tea sample was using as an alternative matrix, a suppressed matrix effect was generated during the determination of 15 pesticide residues in six types of tea which the week matrix effect was the main one, The matrix effect ranged from 0.09%～48.09%, and the strong, medium, and weak matrix effects were 0, 13.33% and 86.67%. Conclusion The matrix effect of tea samples is complex, we can use matrix standard curve during the determination of 15 pesticide residues in six types of tea to reduce the impact of matrix effects. The mix tea sample using as an alternative matrix can improve the analysis efficiency of batch samples effectively.
- Gas chromatography-tandem mass spectrometry(GC-MS/MS),
- Tea,
- Pesticide residue,
- Matrix effect(ME),
- Alternative matrix.

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References(20)

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