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Determination of 16 kinds of pesticide residues in tea beasd on modified QuEChERS-high performance liquid chromatography-tandem mass spectrometry using carboxylated multi-walled carbon nanotubes and attapulgite
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Ya-Ting LIU1, 2, Ren-Zheng ZHANG1, *, Yuan GAO1
Journal of Food Safety & Quality | 2026, 17(17) : 36 - 44
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Journal of Food Safety & Quality | 2026, 17(17): 36-44
• Special Topic: Analysis and Monitoring of Toxic and Harmful Substances in Food •
Determination of 16 kinds of pesticide residues in tea beasd on modified QuEChERS-high performance liquid chromatography-tandem mass spectrometry using carboxylated multi-walled carbon nanotubes and attapulgite
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Ya-Ting LIU1, 2, Ren-Zheng ZHANG1, *, Yuan GAO1
Affiliations
  • 1.Guizhou Provincial Institute of Food Inspection and Testing, Guiyang 550081, China
  • 2.College of Food Science and Technology, Hunan Agricultural University, Changsha 410128, China
doi: 10.19812/j.cnki.jfsq11-5956/ts.20260707003
Outline
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Objective

To establish a method for determination of 16 kinds of pesticide residues in tea by modified QuEChERS-high performance liquid chromatography-tandem mass spectrometry (HPLC-MS/MS) using carboxylated multi-walled carbon nanotubes (MWCNTs-COOH) and attapulgite (ATP).

Methods

Tea samples were extracted with acetonitrile containing 1% acetic acid. After purification with anhydrous magnesium sulfate, primary secondary amine, MWCNTs-COOH and ATP, the extract was filtered and analyzed by HPLC-MS/MS. Quantification was performed using matrix-matched calibration curves with external standard method.

Results

Satisfactory linear relationships were obtained for target pesticides within the range of 1–100 μg/L, with correlation coefficients (r) all higher than 0.995. The spiked recoveries of 16 kinds of pesticides ranged from 77.2% to 114.7%, with relative standard deviations of 1.2%–9.4%. The limits of quantitation of the method were 0.16–3.46  μg/kg.

Conclusion

This method is simple, accurate and rapid. It can be applied to the detection of relevant pesticide residues in tea, and provides reliable technical support for quality-safety risk monitoring and pesticide residue control of tea agricultural products.

QuEChERS  /  carboxylated carbon nanotube  /  attapulgite  /  tea  /  pesticide residues
刘娅婷, 张仁正, 高源. 基于羧基化多壁碳纳米管和凹凸棒土改进QuEChERS-高效液相色谱-串联质谱法测定茶叶中16种农药残留. 食品安全质量检测学报, 2026 , 17 (17) : 36 -44 . DOI: 10.19812/j.cnki.jfsq11-5956/ts.20260707003
Ya-Ting LIU, Ren-Zheng ZHANG, Yuan GAO. Determination of 16 kinds of pesticide residues in tea beasd on modified QuEChERS-high performance liquid chromatography-tandem mass spectrometry using carboxylated multi-walled carbon nanotubes and attapulgite[J]. Journal of Food Safety & Quality, 2026 , 17 (17) : 36 -44 . DOI: 10.19812/j.cnki.jfsq11-5956/ts.20260707003
Appendix
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Year 2026 volume 17 Issue 17
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Article Info
doi: 10.19812/j.cnki.jfsq11-5956/ts.20260707003
  • Receive Date：2026-07-07
  • Online Date：2026-11-05
Article Data
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  • Received：2026-07-07
Funding
Affiliations
    1.Guizhou Provincial Institute of Food Inspection and Testing, Guiyang 550081, China
    2.College of Food Science and Technology, Hunan Agricultural University, Changsha 410128, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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