环境样品混合物中甲萘威及其水解产物的停流测定。

Stopped-flow determination of carbaryl and its hydrolysis product in mixtures in environmental samples.

作者信息

Quintero M C, Silva M, Perez-Bendito D

机构信息

Department of Analytical Chemistry, Faculty of Sciences, University of Córdoba, 14004 Córdoba, Spain.

出版信息

Talanta. 1988 Dec;35(12):943-8. doi: 10.1016/0039-9140(88)80225-x.

DOI:10.1016/0039-9140(88)80225-x

PMID:18964652

Abstract

A kinetic method for determination of carbaryl and its hydrolysis product in mixtures, by a modular stopped-flow system, is reported. The method involves the formation of the coupling product formed between 1-naphthol, the hydrolysis product of carbaryl and diazotized sulphanilic acid in a weak acid medium. With one hydrolysed and one unhydrolysed sample aliquot both carbaryl and 1-naphthol can be determined in their mixtures, with a relative standard deviation of 0.8%. The method is highly selective and free from interference by other pesticides tested and has been applied to the analysis of environmental samples for carbaryl and 1-naphthol.

摘要

报道了一种用模块化停流系统测定混合物中甲萘威及其水解产物的动力学方法。该方法涉及在弱酸介质中，甲萘威的水解产物1-萘酚与重氮化磺胺酸之间形成偶联产物。用一份水解样品等分试样和一份未水解样品等分试样，可测定混合物中甲萘威和1-萘酚的含量，相对标准偏差为0.8%。该方法具有高度选择性，不受所测试的其他农药干扰，已应用于环境样品中甲萘威和1-萘酚的分析。