Chromium contamination in river waters caused by tanneries in the State of Minas Gerais, Brazil.

被引：27

作者：

Jordao, CP ^{[1
]}

da Silva, AC ^{[1
]}

Pereira, JL ^{[1
]}

Brune, W ^{[1
]}

机构：

[1] Univ Fed Vicosa, Dept Quim, BR-36571000 Vicosa, MG, Brazil

来源：

QUIMICA NOVA | 1999年 / 22卷 / 01期

关键词：

chromium; tannery; pollution;

D O I：

10.1590/S0100-40421999000100010

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

In order to evaluate the chromium contamination from tannery discharges into rivers in the State of Minas Gerais, samples of water and suspended material were collected and submitted to chemical analysis. The total content of chromium in the samples was measured by flame atomic absorption spectrophotometry. Water samples were analysed by standard addition method, while chromium concentration in suspended materials was determined by calibration curves. Localities investigated were Ipatinga, Matias Barbosa, Dores de Campo, Ressaquinha, Uba and Juiz de Fore, Samples from a not-industrialized area were also analysed to obtain regional background values. Metal inputs were related to effluent discharges into the rivers. Suspended material transported Cr downriver. Chromium concentration in river water exceeded 656 times the value of the Brazilian Environmental Standards, while its concentration in suspended material ranged from 15 to 11066 mu g g(-1).

引用

页码：47 / 52

页数：6

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