| 荧光法检测辛硫磷残留量及其分析应用 |
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| 引用本文： | 程定玺,高曼.荧光法检测辛硫磷残留量及其分析应用[J].河南师范大学学报(自然科学版),2009,37(2). |
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| 作者姓名： | 程定玺 高曼 |
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| 作者单位： | 河南师范大学,化学与环境科学学院,河南,新乡,453007 |
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| 基金项目： | 河南省科委自然科学基金 |
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| 摘 要： | 在pH为6.00的Britton-Robinson缓冲溶液中,水溶性荧光素(SF)与一定浓度的溴化十六烷基三甲基铵(CTMAB)反应,使其荧光强度剧增,当在SF-CTMAB中加入辛硫磷(phoxim)后,体系的荧光强度明显降低,且降低程度与辛硫磷的加入量呈良好的线性关系,据此建立了测定辛硫磷残留量的新方法.在优化实验条件下,线性范围为0.032~0.72 mg.L-1,检出限为0.026 mg.L-1,已用于大米和土壤中辛硫磷残留量的检测,回收率在97.5%~100.5%之间,相对标准偏差为1.3%~2.2%,符合农药残留分析的要求.
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| 关 键 词： | 荧光光谱 水溶性荧光素 溴化十六烷基三甲基铵 辛硫磷残留量 |
Determination of Phoxim Residues by Fluorescence Spectrometry and its Analytical Application |
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| CHENG Ding-xi,GAO Man.Determination of Phoxim Residues by Fluorescence Spectrometry and its Analytical Application[J].Journal of Henan Normal University(Natural Science),2009,37(2). |
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| Authors: | CHENG Ding-xi GAO Man |
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| Institution: | College of Chemistry and Environmental Sciences;Henan Normal University;Xinxiang 453007;China |
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| Abstract: | In the Britton-Robinson buffer solution at pH 6.20,the fluorescence intensity of soluble fluorescein(SF) is enhanced violently with a certain concentration of the cetyl trimethyl ammonium bromide(CTMAB) present.The enhanced fluorescence intensity is declined obviously after adding phoxim and the reduced fluorescence intensity is proportional to the concentration of phoxim.Based on this,a new fast and simple method for determination of the phoxim residues has been developed.Under optimal conditions,the linea... |
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| Keywords: | fluorescence spectrometry soluble fluorescein cetyl trimethyl ammonium bromide phoxim residues |
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