A screening method for detection of hexavalent chromium levels in soils

Quimica nova

Rodrigues, Maria Lucia Kolowski¹  Bavaresco, Jovana¹  Jardim, Wilson F²  Franco, Débora V³ 

[1] Fundação Estadual de Proteção Ambiental Henrique Luiz Roessler, Porto Alegre, Brasil;Universidade Estadual de Campinas, Campinas, Brasil;Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, Brasil

关键词: hexavalent chromium;    screening methods;    soil.;   

DOI  :  10.1590/S0100-40422011000700025

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 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.

【 授权许可】

CC BY