Monitoring and risk assessment of 74 pesticide residues in Pu-erh tea produced in Yunnan, China

文献类型： 外文期刊

第一作者： Chen, Hongping

作者： Chen, Hongping;Wang, Qinghua;Jiang, Ying;Wang, Chuanpi;Yin, Peng;Liu, Xin;Lu, Chengyin

作者机构：

关键词： risk assessment;pesticide residues;Pu-erh tea;contaminated level

期刊名称：Food Additives & Contaminants Part B-Surveillance （ 影响因子：3.407； 五年影响因子：3.35 ）

ISSN： 1939-3210

年卷期： 2015 年 8 卷 1 期

页码：

收录情况： SCI

摘要： A number of 100 Pu-erh tea samples from the 2013 harvest in Yunnan Province (China) were analysed for 74 pesticides. A total of 11 pesticides were detected. At least one pesticide was detected in 56% of the samples. None of these samples contained the 74 monitored pesticides at concentrations above the Chinese maximum residual levels. Imidacloprid, bifenthrin and acetamiprid were most frequently found, with percentages of 53%, 46% and 31%, respectively. These were also the top three pesticides with maximum concentrations of 140, 246 and 672 mu gkg(-1), respectively. Residual levels of the monitored pesticides showed no significant correlation with the production time or area of Pu-erh tea. Whereas a high incidence of pesticide residues was detected in Pu-erh tea, the contamination levels observed do not pose any serious health risks.

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