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Seasonal variation and exposure risk assessment of pesticide residues in vegetables from Xinjiang Uygur Autonomous Region of China during 2010-2014

文献类型： 外文期刊

作者： Wu, Lipeng 1 ; Zhou, Xiaolong 1 ; Zhao, Duoyong 1 ; Feng, Ting 1 ; Zhou, Jun 1 ; Sun, Tao 2 ; Wang, Jianmei; Wang, Che 1 ;

作者机构： 1.Xinjiang Acad Agr Sci, Inst Qual Stand & Testing Technol Agroprod, Lab Qual & Safety Risk Assessment Agroprod Urumqi, Key Lab Agroprod Qual & Safety,Minist Agr, Xinjiang 830091, Urumqi, Peoples R China

2.Xinjiang

关键词： Food analysis;Food composition;Pesticide residues;Vegetable;Exposure risk assessment;Maximum residue limit (MRL);Target hazard quotient (THQ);Food safety

期刊名称：JOURNAL OF FOOD COMPOSITION AND ANALYSIS （ 影响因子：4.556； 五年影响因子：4.89 ）

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收录情况： SCI

摘要： In the present study, 48 pesticide residues in 19,786 vegetable samples collected from Xinjiang Uygur Autonomous Region (Xinjiang) of China over four seasons during 2010-2014 were quantitatively analyzed by gas chromatography tandem mass spectrometer (GC-MS/MS) or liquid chromatograph tandem mass spectrometer (LC-MS/MS). The potential exposure risks were then evaluated. Overall, pesticide contamination is the most serious risk in the first three months of the calendar year (Jan-Mar); thereafter the levels of contamination tend to decrease. There were 6325 samples (31.97%) that contained pesticide residues, and 768 samples (3.88%) that exceeded the maximum residue limits (MRLs). The highest residue rates and those exceeding MRLs rate were found in celery. Leafy vegetables and legume vegetables were more contaminated than other vegetable groups. The most frequently detected pesticide was. procymidone (6.43%). Some banned or restricted pesticides such as HCB, DDT and carbofuran were detected. The highest detected concentration was in cypermethrin (7.40 mg/kg). The target hazard quotient (THQ) of all pesticides was <1, and the hazard index (HI) was 0.0872. The results supported that pesticide residues in vegetables may not pose a serious threat to public health in Xinjiang, despite a high detection rate. More importantly, continuous monitoring and tighter regulation of pesticide residues are highly suggested to promote food safety. (C) 2016 Elsevier Inc. All rights reserved.

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