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首页> 外文期刊>Journal of environmental science and health >Determination of the insecticide diflubenzuron in mushrooms by kinetic method and high-performance liquid chromatographic method
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Determination of the insecticide diflubenzuron in mushrooms by kinetic method and high-performance liquid chromatographic method

机译：动力学方法和高效液相色谱法测定蘑菇中的杀虫剂双氟苯隆

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摘要

In the present study, a new sensitive and simple kinetic-spectrophotometric method for the determination of the insecticide diflubenzuron [l-(4-chlorophenyl)-3-(2,6-diflubenzoil)urea] is proposed. The method is based on the inhibited effect of diflubenzuron on the oxidation of sulphanilic acid (SA) by hydrogen peroxide in phosphate buffer in presence Cu(II) ion. Diflubenzuron was determined with linear calibration graph in the interval from 0.31 to 3.1 μg mL~(-1) and from 3.1 to 31.0 μg mL~(-1). The optimized conditions yielded a theoretical detection limit of 0.18 μg mL~(-1) corresponding to 0.036 mg Kg~(-1) mushroom sample based on the 3S_b criterion. The RSD is 5.03-1.83 % and 2.81-0.71 % for the concentration interval of diflubenzuron 0.31-3.1 μg mL~(-1) and 3.1-31.0 μg mL~(-1), respectively. The reaction was followed spectrophotometrically at 370 nm. The kinetic parameters of the reaction are reported, and the rate equations are suggested. The developed procedure was successfully applied to the rapid determination of diflubenzuron in spiked mushroom samples of different mushroom species. The HPLC method was used like a comparative method to verify results.
机译：在本研究中，提出了一种灵敏，简单的动力学分光光度法测定杀虫剂双氟苯隆[1-（4-氯苯基）-3-（2,6-二氟苯甲酰）脲]。该方法基于双氟苯隆对存在Cu（II）离子的磷酸盐缓冲液中过氧化氢对磺胺酸（SA）氧化的抑制作用。用线性校正图在0.31至3.1μgmL〜（-1）和3.1至31.0μgmL〜（-1）范围内测定地氟苯隆。根据3S_b标准，优化的条件产生的理论检出限为0.18μgmL〜（-1），对应于0.036 mg Kg〜（-1）蘑菇样品。对于双氟苯隆0.31-3.1μgmL〜（-1）和3.1-31.0μgmL〜（-1）的浓度间隔，RSD分别为5.03-1.83％和2.81-0.71％。分光光度法在370nm下追踪反应。报告了反应的动力学参数，并提出了速率方程。所开发的方法已成功地用于快速测定不同蘑菇种类的加标蘑菇样品中的敌百苯隆。 HPLC方法与比较方法类似，用于验证结果。

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  • 来源
    《Journal of environmental science and health》 |2010年第8期|p.783-789|共7页
  • 作者

    Z. M. GRAHOVAC; S. S. MITIC; E. T. PECEV; A. N. PAVLOVIC;

  • 作者单位

    Faculty of Natural Sciences and Mathematics, Department of Chemistry, Nis, Serbia Faculty of Natural Sciences and Mathematics, Department of Chemistry, Visegradska 33, P. O. Box 224, 18000 Nis, Serbia;

    rnFaculty of Natural Sciences and Mathematics, Department of Chemistry, Nis, Serbia Faculty of Natural Sciences and Mathematics, Department of Chemistry, Visegradska 33, P. O. Box 224, 18000 Nis, Serbia;

    rnFaculty of Natural Sciences and Mathematics, Department of Chemistry, Nis, Serbia Faculty of Natural Sciences and Mathematics, Department of Chemistry, Visegradska 33, P. O. Box 224, 18000 Nis, Serbia;

    rnFaculty of Natural Sciences and Mathematics, Department of Chemistry, Nis, Serbia Faculty of Natural Sciences and Mathematics, Department of Chemistry, Visegradska 33, P. O. Box 224, 18000 Nis, Serbia;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    diflubenzuron; kinetic method; HPLC method; liquid-liquid extraction; mushrooms;

    机译：双氟苯隆动力学方法HPLC法;液液萃取蘑菇;

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