中文摘要：本研究采集了从2010-2014年每年四个季节中国新疆19786个蔬菜样本中的48种农药残留，采用气相色谱-串联质谱定量分析（GC-MS）或液相色谱-串联质谱（LC-MS/MS）进行了残留检测，并进行了潜在暴露风险评估。总体而言，在每年的前三个月（1月-3月）农药残留暴露风险最严重，此后风险逐渐下降，有6325个样本（占总体31.97%）含有农药残留，768个样本（占总体3.88%）农药残留量超过最大残留限量（MRLs）。最大残留量和超过最大残留限量（MRLs）比率最多的均是在芹菜样本中。叶菜类和豆类蔬菜的受污染程度明显高于其他类蔬菜。残留检出最多的农药是腐霉利（占6.43%），残留浓度最高的农药是氯氰菊酯（7.40毫克/公斤）。所有农药的目标危害熵均小于1，危害指数为0.0872。结果表明，尽管检出率较高，但新疆地区蔬菜农药残留不会对其公共健康造成严重威胁，重要的是要对农药残留进行不断地监测和严格地监管，从而保障食品安全。
外文摘要：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.
 
外文关键词：Food analysis, Food composition, Pesticide residues, Vegetable, Exposure risk assessment, Maximum residue limit (MRL), Target hazard quotient (THQ), Food safety
作者：Wu, Lipeng; Zhou, Xiaolong; Zhao, Duoyong; Feng, Ting; Zhou, Jun; Sun,Tao; Wang, Jianmei; Wang, Cheng
作者单位：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.
期刊名称：JOURNAL OF FOOD COMPOSITION AND ANALYSIS
期刊影响因子：2.78
出版年份：2017
出版刊次：3
点击下载：2010-2014年新疆蔬菜农药残留的季节性变化和暴露风险评估