Spectrophotometric determination of mercury in environmental sample and fungicides based on its complex with o-carboxy phenyl diazoamino p-azobenzene

被引：36

作者：

Chatterjee, S ^{[1
]}

Pillai, A ^{[1
]}

Gupta, VK ^{[1
]}

机构：

[1] Pt Ravishankar Shukla Univ, Sch Studies Chem, Raipur 492010, Madhya Pradesh, India

来源：

TALANTA | 2002年 / 57卷 / 03期

关键词：

spectrophotometric method; mercury; environmental samples; fungicides;

D O I：

10.1016/S0039-9140(02)00037-1

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

In the present method a new reagent o-carboxyphenyl diazoamino p-azobenzene has been synthesised for the determination of mercury spectrophotometrically. The method is based on the reaction of mercury with the reagent in alkaline medium where the reagent is in the aci-form. The purple violet coloured dye-mercury complex showed an absorption maxima at 540 nm. Beer's law is valid over the concentration range of mercury from 0.08 to 0.8 mug ml (0.08-0.8 ppm). The molar absorptivity and Sandell's sensitivity were found to be 2.22 x 10(5) mol(-1) cm(-1) and 0.0009 mug cm(-2), respectively. The method has been successfully applied to the determination of mercury in air, water, soil and fungicide samples. (C) 2002 Published by Elsevier Science B.V.

引用

页码：461 / 465

页数：5

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