A KINETIC SPECTROPHOTOMETRIC METHOD TO DETERMINE THE INSECTICIDE METHYL PARATHION IN COMMERCIAL FORMULATIONS AND THE AQUEOUS ENVIRONMENT

被引：5

作者：

BLANCO, CC

SANCHEZ, FG

机构：

[1] Department of Analytical Chemistry, Faculty of Sciences, The University

来源：

INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY | 1990年 / 38卷 / 04期

关键词：

commerical formulations; Kinetic method; methyl parathion; p-nitrophenol; spectrophotometry; water analysis;

D O I：

10.1080/03067319008026953

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A simple kinetic-spectrophotometric method for the analysis of the organophosphate insecticide methyl parathion is presented. The method is based on the alkaline hydrolysis of the insecticide into its main metabolite p-nitrophenol. The influence of reaction variables (pH and temperature), and the effect of other pesticides, are discussed. The calibration graphs (initial rate, fixed time, fixed absorbance) were linear from 2 to 30μg/ml. The precision was calculated for the different methods applied, the relative standard deviation being 6.25 % for 4 μg/ml. The proposed kinetic method can be applied directly to synthetic mixtures, commercial formulations and different aqueous environment, with recoveries close to 100%. © 1990, Taylor & Francis Group, LLC. All rights reserved.

引用

页码：513 / 523

页数：11