期刊文献+

高效液相色谱-蒸发光散射检测茶叶中的乐果残留 被引量:8

Determination of Dimethoate Residues in Tea by HPLC with Evaporative Light-scatter Detector
下载PDF
导出
摘要 建立了一种利用反相高效液相色谱-蒸发光散射检测的方法测定茶叶中的乐果残留,色谱柱是C18反相柱,流动相为乙腈-水(体积比为1∶1),流速为1.0mL/min;蒸发光散射检测器漂移管温度92.5℃,载气流速2.5L/min。乐果色谱峰面积的自然对数与质量浓度的自然对数呈良好的线性关系,茶叶中乐果检测的精密度RSD为2.45%,回收率为99.33%,茶叶中乐果的出峰时间为2min左右,乐果的检出限为0.04ng。 An analytical method was developed for determining dimethoate residues in tea by high performance liquid chromatography(HPLC) with evaporative light-scatter detector. Chromatographic analysis was carried out on a Alltima C 18 column with acetonitrile plus water(1:1, by vol)as the mobile phase. The flow rate was 1.0 mL/min. The drift tube temperature and nitrogen carriers gas flow rate of ELSD were set at 92.5 ℃ and 2.5 L/rain, respectively. The correlation coefficient was good with r^2=0.9998. For the detection of dimethoate in tea samples, the standard deviation was 2.45 %, the average recovery was 99.33 %, the limit line of dimethoate was 0.04 ng and the run time of dimethoate was approximately two minutes.
出处 《农药》 CAS 北大核心 2007年第6期395-396,408,共3页 Agrochemicals
基金 国家自然科学基金资助项目(20325622 20576013 50373003) 博士点基金资助项目(20030010004) "十五"攻关资助项目(2004BA411B05)
关键词 乐果 茶叶 残留 高效液相色谱 蒸发光散射检测 dimethoate tea residue HPLC ELSD
  • 相关文献

参考文献13

二级参考文献20

  • 1陈雁君,卢英华,孙锡浩,刘君,陈燕垒,任金兰.土壤中残留硫双威的气相色谱测定[J].中国卫生检验杂志,1996,6(3):132-134. 被引量:3
  • 2陈为通 沙逸仙 等.气相色谱手册[M].北京:科学出版社,1984..
  • 3全国农药残留试验研究协作组.农药残留量实用检测方法手册(第二卷)[M].北京:化学工业出版社,2001.174-175.
  • 4GB 18862—2002原产地域产品杭白菊.
  • 5GB/T 5009.20—2003食品中有机磷农药残留量的测定.
  • 6闫慧芳 潘亚娟 王建.血清中有机磷农药乐果、甲基对硫磷、甲胺磷和敌敌畏的快速高效薄层定性分析方法..
  • 7GB/T17331-1998.食品中有机磷和氨基甲酸酯类农药多种残留的测定[S].[S].,..
  • 8Julie F,Ralph H,Mario L,et al.Multiresidue determination of pesicides in fruit and vegetables by gas chromatography-massselective detection and liquid chromatography with fluorescence detection[J].Journal of AOAC international,1995,78:1252-1266.
  • 9Colume A,Cardenas S,Gallego M,et al.Semiautomatic multiresidue gas chromatographic method for the screening of vegetables for 25 organochlorine and pyrethroid pesticides[J].Analytica Chimica acta,2001,436:153-162.
  • 10中华人民共和国国家质量监督检验检疫总局.GB 18406-2001.农产品安全质量无公害蔬菜安全要求[S].北京:中国标准出版社,2001..

共引文献32

同被引文献107

引证文献8

二级引证文献32

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部