Geochemical Characteristics of Rare Earth Elements in Sewage Discharge Channels of Tianjin
来源期刊：JOURNAL OF RARE EARTHS2003年第6期
论文作者：王秀丽 李国胜 丁力强 王立军 梁涛 张朝生 闫欣
Key words：pedology; sewage; geochemistry; Tianjin; rare earths;
Abstract: The geochemical features of rare earth elements (REEs) in the North and South sewage discharge channels of Tianjin were studied. The results show that concentrations of dissolved REEs in water of the sewage discharge channels are very low, while concentrations of Eu and heavy REEs are higher than those in natural rivers. Concentrations of REEs in unfiltered water are high and they mainly resided on suspended matter. Distribution patterns of the dissolved and susp ended light REEs vary reversely with the atomic number. Concentrations of REEs in the sediments and suspended matter are lower than those in natural rivers, and concentrations of REEs in the suspended matter are much lower than those in the sediments. Distribution patterns of REEs in sediments and suspended matter were similar with light REE enrichment and positive Eu-anomaly. This distributi on pattern is different from those of natural rivers. The differences may cause by the large amount of organic pollutants in sewage.
王秀丽1，李国胜2，丁力强3，王立军2，梁涛2，张朝生4，闫欣1
(1.Institute of Geology, CAS, Beijing 100029, China;
2.Institute of Geographic Sciences and Natural Resources Research, CAS, Beijin g 100101, China;
3.Environmental Monitoring Station of Tianjin, Tianjin 300191, China;
4.Department of Geography and Environmental Change Institute, National University of Ireland, Galway, Ireland)
Abstract:The geochemical features of rare earth elements (REEs) in the North and South sewage discharge channels of Tianjin were studied. The results show that concentrations of dissolved REEs in water of the sewage discharge channels are very low, while concentrations of Eu and heavy REEs are higher than those in natural rivers. Concentrations of REEs in unfiltered water are high and they mainly resided on suspended matter. Distribution patterns of the dissolved and susp ended light REEs vary reversely with the atomic number. Concentrations of REEs in the sediments and suspended matter are lower than those in natural rivers, and concentrations of REEs in the suspended matter are much lower than those in the sediments. Distribution patterns of REEs in sediments and suspended matter were similar with light REE enrichment and positive Eu-anomaly. This distributi on pattern is different from those of natural rivers. The differences may cause by the large amount of organic pollutants in sewage.
Key words:pedology; sewage; geochemistry; Tianjin; rare earths;
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