| 贵州地区茶叶及茶汤中氯氰菊酯残留量检测及其摄入风险分析 |
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| 引用本文： | 李俊,杜楠,庞宏宇,郭晓关,刘凯,武昌会.贵州地区茶叶及茶汤中氯氰菊酯残留量检测及其摄入风险分析[J].农药学学报,2012,14(3):305-309. |
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| 作者姓名： | 李俊 杜楠 庞宏宇 郭晓关 刘凯 武昌会 |
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| 作者单位： | 1.贵州省农产品质量安全监督检验测试中心/贵州省茶叶质量安全监督检验站, 贵阳 550004 |
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| 基金项目： | 贵州省茶叶农残检测资助项目[黔农发(2011)104号]. |
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| 摘 要： | 采用气相色谱建立了茶叶样品中氯氰菊酯残留量检测方法;通过对贵州省市售茶叶样品中氯氰菊酯的残留情况进行抽检,以了解其市售茶叶的安全性;通过田间试验制备浸泡实验用茶叶样品,设计正交实验研究了影响茶汤中氯氰菊酯浸出率的因素。结果表明,市场抽检茶叶样品中氯氰菊酯残留量平均值为0.919 mg/kg,最高残留量为1.52 mg/kg,低于茶叶中氯氰菊酯的最大残留限量(MRL)标准20 mg/kg;正交实验表明,浸泡次数和浸泡时间是影响氯氰菊酯浸出率的主要因素,茶汤中氯氰菊酯的最高浸出率为5.76%。按人均最高泡茶用量13 g/d计算,由饮茶而进入人体 的氯氰菊酯的最大量为1.5×10-2 mg/d,按氯氰菊酯每日最大允许摄入量(ADI)为0.05 mg/kg bw、 平均体重60 kg计,则其安全系数(K)为200。
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| 关 键 词： | 茶叶 氯氰菊酯 冲泡 残留 安全性 |
| 收稿时间： | 2011/10/18 0:00:00 |
| 修稿时间： | 2012/3/15 0:00:00 |
Detection and risk assessment of cypermethrin residue in tea and tea infusion in Guizhou |
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| LI Jun,DU Nan,PANG Hongyu,GUO Xiaoguan,LIU Kai and WU Changhui.Detection and risk assessment of cypermethrin residue in tea and tea infusion in Guizhou[J].Chinese Journal of Pesticide Science,2012,14(3):305-309. |
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| Authors: | LI Jun DU Nan PANG Hongyu GUO Xiaoguan LIU Kai and WU Changhui |
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| Institution: | 1.Supervision and Testing Center for Agri-Products Quality and Security of Guizhou Province/ The Quality Safety Supervision and Inspection Offices of Tea in Guizhou2.Guiyang 550004, China |
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| Abstract: | Gas chromatography was used to determine the residue level of cypermethrin in tea samples.Determination of cypermethrin residues was investigated to evaluate the tea samples to be sold in Guizhou Province.An orthogonal field experiment was designed to study the factors that influence the extraction rate of cypermethrin.The results showed that the average and highest cypermethrin residue of the teas on Guizhou Province market was 0.919 mg/kg and 1.52 mg/kg which were much lower than the maximum residue limit (MRL) of 20 mg/kg for cypermethrin.The result of the orthogonal experiment showed that the times and time of soaking were the main factors affecting the extraction rate of cypermethrin.The highest extraction rate of cypermethrin was 5.76% for an average person,which suggested a maximum daily intake of 1.5×10-2 mg.The safety coefficient ( K ) was 200,acceptable daily intake (ADI) 0.05 mg/kg bw for cypermethrin,average weight 60 kg. |
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| Keywords: | tea cypermethrin brew residue safety |
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