Fourier transform infrared spectrometric determination of Ziram

被引：22

作者：

Cassella, AR ^{[1
]}

Garrigues, S ^{[1
]}

de Campos, RC ^{[1
]}

de la Guardia, M ^{[1
]}

机构：

[1] Univ Valencia, Dept Analyt Chem, Burjassot 46100, Valencia, Spain

来源：

TALANTA | 2001年 / 54卷 / 06期

关键词：

FTIR vapour-phase; pesticide formulations; ziram;

D O I：

10.1016/S0039-9140(01)00366-6

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A procedure has been developed for vapour-phase Fourier transform infrared determination of Ziram, a dithiocarbamate pesticide. The method is based on the evolution of CS2, after decomposition of the dithiocarbamate with diluted H2SO4 at 50 degreesC. The CS2 evolved was swept by a carrier flow of nitrogen to a laboratory-made infrared gas cell of 39 mm pathlength and 490 mul volume. The signals were registered as a function of time. The area of peaks obtained from absorbance measurement in the wavenumber range between 1600 and 1450 cm(-1) were interpolated in a calibration line established from Ziram standards treated in the same way as samples. The method provided an absolute limit of detection of 0.055 mg, a variation coefficient of the order of 6% for an analyte mass of 50 mg, and an analysis time of 3.5 min. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：1087 / 1094

页数：8

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