Chromium speciation in river sediment pore water contaminated by tannery effluent
Chromium speciation in river sediment pore water contaminated by tannery effluent
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DOI：
10.1016/j.chemosphere.2012.05.005
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发表时间：
2012-10-01
期刊：
影响因子：
8.8
通讯作者：
Reimer, Kenneth J.
中科院分区：
文献类型：
--
作者：
Burbridge, David J.;Koch, Iris;Reimer, Kenneth J.
Cr（VI）比Cr（III）更易溶解，毒性更大。沉积物孔隙水进行了调查，在一条河流附近的一个大型前制革厂，铬污染的污水排放超过55年的时间，并在沉积物中发现了极高的铬浓度的财产。透析细胞，或窥视器，被用来生成沉积物孔隙水中的铬浓度的深度剖面。采用电感耦合等离子体质谱法（ICP-MS）分析样品中的总铬，采用高效液相色谱法（HPLC）-ICP-MS分析样品中的铬物种。结果表明，所有样品中均不存在Cr（VI）。此外，在沉积物铬浓度最高的地点收集的样品中添加的铬（VI）的不完全回收表明，这些地点的还原条件很强，不利于铬（VI）的存在。皇冠版权所有（C）2012由爱思唯尔有限公司出版。保留所有权利。
Cr(VI) is far more soluble and toxic than Cr(III). Sediment pore water was investigated in a river adjacent to the property of a large former tannery, into which Cr-contaminated effluent was discharged over a 55-year period, and where extremely high Cr concentrations have been found in the sediments. Dialysis cells, or peepers, were used to generate depth profiles of Cr concentration in sediment pore water. Samples were analyzed for total Cr using inductively coupled plasma-mass spectrometry (ICP-MS) and for Cr species using high performance liquid chromatography (HPLC)-ICP-MS. The results show an absence of Cr(VI) in all samples. Furthermore, incomplete recovery of Cr(VI) added to the samples collected at the locations with highest sediment Cr concentrations indicate strong reducing conditions at those locations, which are not conducive to the presence of Cr(VI). Crown Copyright (C) 2012 Published by Elsevier Ltd. All rights reserved.