A screening method for detection of hexavalent chromium levels in soils

Química Nova

Débora V Franco²  Maria Lucia Kolowski Rodrigues¹  Jovana Bavaresco¹  Wilson F Jardim¹ 

[1] ,Universidade Federal dos Vales do Jequitinhonha e Mucuri Departamento de Química Diamantina MG ,Brasil

关键词: hexavalent chromium;    screening methods;    soil;   

DOI  :  10.1590/S0100-40422011000700025

来源: SciELO

【 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-NC   
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