Chromium fractionation and speciation in natural waters

被引：31

作者：

Pereira, Catarinie Diniz ^{[2
]}

Techy, Joao Gabriel ^{[1
]}

Ganzarolli, Edgard Moreira ^{[1
]}

Quinaia, Sueli Percio ^{[1
]}

机构：

[1] Univ Estadual Ctr Oeste Parana, Dept Quim, BR-85040080 Guarapuava, PR, Brazil

[2] Univ Fed Sao Carlos, Dept Quim, BR-13560970 Sao Carlos, SP, Brazil

来源：

JOURNAL OF ENVIRONMENTAL MONITORING | 2012年 / 14卷 / 06期

关键词：

WASTE-WATER; SEDIMENTS; ESTUARY; CR(VI); RIVERS; SPECTROMETRY; ELEMENTS; CR(III); METALS;

D O I：

10.1039/c2em10949b

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

It is common for leather industries to dump chromium-contaminated effluent into rivers and other bodies of water. Thus, it is crucial to know the impacts caused by this practice to the environment. A study on chromium partitioning and speciation, with determination at trace levels, was carried out in a potentially contaminated creek. Chromium fractionation and speciation was performed using a flow-injection preconcentration system and detection by flame atomic absorption spectrometry. High levels of this element were found in the particulate material (449-9320 mg kg(-1)), which indicates its compatibility with this fraction. The concentration of Cr(III) in the water samples collected ranged from 5.2-105.2 mu g L-1. Cr(VI) was always below of the DL (0.3 mg L-1). Chromium accumulation observed in the sediment (873-1691 mg kg(-1)) may confirm contamination due to the long term release of contaminated effluents in the creek.

引用

页码：1559 / 1564

页数：6

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