| 凝胶渗透色谱和固相萃取净化-气相色谱分离组合法测定糙米中的残留农药 |
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| 引用本文： | 李樱,储晓刚,仲维科,李淑娟,何友昭.凝胶渗透色谱和固相萃取净化-气相色谱分离组合法测定糙米中的残留农药[J].分析化学,2004,32(10):1325-1328. |
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| 作者姓名： | 李樱 储晓刚 仲维科 李淑娟 何友昭 |
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| 作者单位： | 中国科学技术大学化学系,合肥230026;中国进出口检验技术研究所食检中心,北京,100025;中国进出口检验技术研究所食检中心,北京,100025;中国科学技术大学化学系,合肥230026 |
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| 基金项目： | 本文系国家"十五"食品安全重大专项课题资助项目(No.2001BA804A17) |
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| 摘 要： | 提出糙米中38种有机氯农药、拟除虫菊酯和多氯联苯残留量的同时测定方法。用乙酸乙酯提取,凝胶渗透色谱和固相萃取净化,气相色谱．电子俘获检测,外标法定量。3个添加水平的平均回收率分别为77．3、81．4和83．8％;相对标准偏差3．8％～13．9％。有机氯农药和多氯联苯检出限为0．07μg／kg;拟除虫菊酯的检出限为0．4μg／kg。检测方法简便省时,自动化程度高,稳定可靠。
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| 关 键 词： | 气相色谱 凝胶渗透色谱 固相萃取 糙米 有机氯 拟除虫菊酯 多氯联苯 |
Determination of Pesticides in Unpolished Rice by a Combined Approach of Gel Permeation Chromatography and Solid Phase Extraction Purification and Gas Chromatography |
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| Li Ying ,Chu Xiaogang ,Zhong Weike,Li Shujuan,He Youzhao.Determination of Pesticides in Unpolished Rice by a Combined Approach of Gel Permeation Chromatography and Solid Phase Extraction Purification and Gas Chromatography[J].Chinese Journal of Analytical Chemistry,2004,32(10):1325-1328. |
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| Authors: | Li Ying Chu Xiaogang Zhong Weike Li Shujuan He Youzhao |
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| Institution: | Li Ying 1,2,Chu Xiaogang *2,Zhong Weike2,Li Shujuan2,He Youzhao *1 1 |
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| Abstract: | A simultaneous determination method was presented for 38 organochlorines, pyrethriods and polychlorinated biphenyl congeners (PCBs) in unpolished rice samples,which were purified by gel permeation chromatogrpahy (GPC) and solid phase extraction (SPE), and analyzed by gas chromatography with electron capture detection. The recoveries of 3 standard addition levels are 77.3%, 81.4% and 83.8 %, respectively, and the relative standard deviation is between 3.8% and 13.9 %. The detection limits are 0.07 mg/kg for organochlorines and PCBs, and 0.4 mg/kg for pyrethriods. |
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| Keywords: | Gas chromatogrpahy gel permeation chromatgorpahy solid phase extraction unpolished rice organochlorines pyrethriods polychlorinated biphenyl congeners |
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