DETERMINATION OF THALLIUM IN SOIL

被引：5
|
作者：
PATEL, KS
AGARWAL, N
机构：
[1] Department of Chemistry, Ravishankar University, Raipur 492010, M.P.
来源：
INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY | 1992年 / 46卷 / 1-3期
关键词：
SPECTROPHOTOMETRY; EXTRACTION; THALLIUM(III); SOILS;
D O I：
10.1080/03067319208026997
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
A new spectrophotometric method is described for the determination of thallium in soil by extraction of Tl(III) with a toluene solution of N,N'-diphenylbenzamidine after acidification with 0.2-4.0 M HC1, and reaction of the extract with Crystal violet in the presence of 0.01-0.8 M HC1. The value of molar absorptivity of T1(III)-X-CV complex (where X = Cl or Br; CV = Crystal violet) in toluene is 7.00 × 1041 mole−1cm−1at the absorption maximum of 610 nm. The detection limit of the method is 20 ng ml−1. The present method is free from interference of almost metal ions commonly associated with Tl. The method has been applied for analysis of the metal to soils. © 1992, Taylor & Francis Group, LLC. All rights reserved.
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页码：63 / 70
页数：8
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