高等学校化学学报

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多元校正-速差动力学分光光度法同时测定三组分有机磷农药

倪永年, 曹东霞   

  1. 南昌大学化学系, 南昌 330047
  • 收稿日期:2005-08-29 修回日期:1900-01-01 出版日期:2006-06-10 发布日期:2006-06-10
  • 通讯作者: 倪永年

Simultaneous Kinetic-spectrophotometric Determination of Three Organophosphorus Pesticides with Multivariate Calibration Methods

NI Yong-Nian*; CAO Dong-Xia   

  1. Department of Chemistry, Nanchang University, Nanchang 330047, China
  • Received:2005-08-29 Revised:1900-01-01 Online:2006-06-10 Published:2006-06-10
  • Contact: NI Yong-Nian

摘要: 速差动力学分析结合化学计量学对动力学数据进行解析计算, 可扩大动力学分析的范围, 提高分析的准确度. 本文利用对硫磷、甲基对硫磷和杀螟硫磷在碱性介质中能与氧化剂过氧化氢发生氧化反应生成对硝基苯酚的性质, 引入多元校正方法中的经典最小二乘法(CLS)、偏最小二乘法(PLS)和主成分回归法(PCR)对动力学数据进行解析, 实现了三组分人工合成样品的同时测定.

关键词: 动力学, 多元校正, 对硫磷, 甲基对硫磷, 杀螟硫磷

Abstract: A kinetic-spectrophotometric method for the determination of parathion, methyl-parathion and fenitrothion was developed. It was based on the kinetic reaction of these compounds with H2O2 in alkaline medium. Under the optimal conditions, quantitative analysis for each compound in mixtures was investigated with the aid of multivariate calibration methods. The proposed method was applied to several water samples spiked with known amounts of the pesticides with satisfactory results.

Key words: Kinetics, Multivariate calibration, Parathion, Methyl\|parathion, Fenitrothion

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