A SCREENING METHOD FOR DETECTION OF HEXAVALENT CHROMIUM LEVELS IN SOILS

被引：9

作者：

Franco, Debora V. ^{[1
]}

Kolowski Rodrigues, Maria Lucia ^{[2
]}

Bavaresco, Jovana ^{[2
]}

Jardim, Wilson F. ^{[3
]}

机构：

[1] Univ Fed Vales Jequitinhonha & Mucuri, Dept Quim, BR-39100000 Diamantina, MG, Brazil

[2] Fundacao Estadual Protecao Ambiental Henrique Lui, BR-90620090 Porto Alegre, RS, Brazil

[3] Univ Estadual Campinas, Inst Quim, BR-13083970 Campinas, SP, Brazil

来源：

QUIMICA NOVA | 2011年 / 34卷 / 07期

关键词：

hexavalent chromium; screening methods; soil; REDUCTION; SAMPLES; CR(VI);

D O I：

10.1590/S0100-40422011000700025

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A rapid and low cost method to determine Cr(VI) in soils based upon alkaline metal extraction at room temperature is proposed as a semi-quantitative procedure to be performed in the field. A color comparison with standards with contents of Cr( VI) in the range of 10 to 150 mg kg(-1) was used throughout. For the different types of soils studied, more than 75% of the fortified soluble Cr( VI) were recovered for all levels of spike tested for both the proposed and standard methods. Recoveries of 83 and 99% were obtained for the proposed and the standard methods, respectively, taking into account the analysis of a heavily contaminated soil sample.

引用

页码：1255 / U171

页数：6

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