Determination of multi-pesticide residues in green tea with a modified QuEChERS protocol coupled to HPLC-MS/MS

被引：193

作者：

Huang, Yousheng ^{[1
,2
]}

Shi, Ting ^{[1
]}

Luo, Xiang ^{[2
]}

Xiong, Hualiang ^{[2
]}

Min, Fangfang ^{[2
]}

Chen, Yi ^{[1
]}

Nie, Shaoping ^{[1
]}

Xie, Mingyong ^{[1
]}

机构：

[1] Nanchang Univ, State Key Lab Food Sci & Technol, Nanchang 330047, Jiangxi, Peoples R China

[2] Jiangxi Inst Anal & Testing, Nanchang 330029, Jiangxi, Peoples R China

来源：

FOOD CHEMISTRY | 2019年 / 275卷

关键词：

Green tea; Pesticide residues; QuEChERS; HPLC-MS/MS; IONIZATION-MASS SPECTROMETRY; PESTICIDE-RESIDUES; LIQUID-CHROMATOGRAPHY; SAMPLE PREPARATION; OOLONG TEA; PERFORMANCE; EXTRACTION; INSECTICIDES; POLYPHENOLS; DILUTION;

D O I：

10.1016/j.foodchem.2018.09.094

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

A modified QuEChERS protocol, coupled to HPLC-MS/MS, was used for the analysis of 102 pesticides in green teas produced in Jiangxi province, China. For accurate quantification, matrix-matched calibration curves were applied to compensate for matrix effects. Recoveries for these pesticides ranged from 62% to 125% with relative standard deviations (RSDs) lower than 18%. The limits of detection and quantification ranged from 0.03 to 15 mu g/kg and 0.1 to 50 mu g/kg, respectively. We determined that 67% of green tea samples contained some pesticide residues and most contained more than five pesticides. Moreover, the levels of 11 pesticide residues in 18 samples were found to be greater than the values permitted in EC Regulation No. 396/2005.

引用

页码：255 / 264

页数：10

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