Distribuição e biodisponibilidade de crômio em solos contaminados por resíduos de couro

Química Nova

Ademir Dos Santos²  Luciana Camargo De Oliveira²  Wander Gustavo Botero²  André Gustavo Ribeiro Mendonça²  Felipe André Dos Santos²  Julio Cesar Rocha²  Maria Lúcia Ribeiro¹  Alessandro Silva De Oliveira¹ 

[1] ,Instituto de Química de Araraquara Universidade Estadual Paulista Araraquara SP ,Brasil

关键词: environmental contamination;    tannery residues;    chromium;   

DOI  :  10.1590/S0100-40422009000700002

来源: SciELO

【 摘 要 】

Samples of soil, water and sediment were collected and analyzed in order to evaluate chromium contamination due to deposition of tannery residues onto soils under different management regimes. The results showed that soils used for sugar cane cultivation were not adversely impacted. However, in the case of mango plantations, variable concentrations of chromium were measured in the soil profile, with 22.2% of values being higher than permitted legal limits, and 38.9% being at levels requiring remediation. Concentrations of bioavailable chromium were lower than the detection limit of the method (0.01 mg of chromium kg-1 of soil), indicating that all of the chromium present in the samples was either complexed or in an insoluble form. Chromium concentrations measured in samples of water and sediments were indicative of low mobility of the metal in soils. The main cause of differences found between soil samples obtained from different cultivations was the type of soil management.

【 授权许可】

CC BY-NC   
 All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License