| 高效液相色谱法测定番茄酱中辛硫磷残留 |
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| 引用本文： | 李欣,郑琦,李锋格.高效液相色谱法测定番茄酱中辛硫磷残留[J].分析科学学报,2012,28(4):590-592. |
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| 作者姓名： | 李欣 郑琦 李锋格 |
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| 作者单位： | 1. 库尔勒出入境检验检疫局,新疆库尔勒,841000
2. 新疆出入境检验检疫局,新疆乌鲁木齐,830063 |
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| 摘 要： | 建立了高效液相色谱(HPLC)法测定番茄酱中辛硫磷残留量的方法。番茄酱样品经乙腈提取盐析,弗罗里硅土固相萃取小柱净化,样液浓缩过滤膜后用乙腈溶解定容。采用C18色谱柱,流动相为体积比4∶1的乙腈∶0.15%甲酸水溶液,检测波长285nm,外标法定量。结果表明:在0.01～1mg/kg范围内辛硫磷的线性关系良好(r=0.9999)。方法检出限为0.01mg/kg,平均回收率为86.1%～102.7%,相对标准偏差为2.0%～6.5%。该法简便、快速、灵敏、准确,各项技术指标均满足农药残留检测的要求。
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| 关 键 词： | 辛硫磷 番茄酱 高效液相色谱 |
Determination of Phoxim Residues in Tomato Sauce by High Performance Liquid Chromatography |
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| LI Xin
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ZHENG Qi
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LI Feng-ge.Determination of Phoxim Residues in Tomato Sauce by High Performance Liquid Chromatography[J].Journal of Analytical Science,2012,28(4):590-592. |
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| Authors: | LI Xin ZHENG Qi LI Feng-ge |
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| Institution: | 1.Korla Entry-Exit Inspection and Quarantine Bureau,Korla 841000; 2.Xinjiang Entry-Exit Inspection and Quarantine Bureau,Urumqi 830063) |
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| Abstract: | A method for the determination of phoxim residues in tomato sauce by high performance liquid chromatography(HPLC) has been developed.Phoxim residues were extracted from tomato sauce with acetonitrile and purified on a Florisil column.The HPLC seperation was performed on a C18 column with acetonitrile-0.15% formic acid(4∶1,V/V) as mobile phase and detection at 285 nm.The linear range was 0.01～1 mg/kg(r=0.9999).The limit of detection(LOD) was 0.01 mg/kg in the tomato sauce,the ranges of recoveries were 86.1%～102.7% and RSD was 2.0%～6.5%.The method was simple,rapid,sensitive and accurate.It was suitable for routine inspection of phoxim residues in tomato sauce. |
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| Keywords: | Phoxim Tomato sauce High performance liquid chromatography |
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