地理学报 ›› 1983, Vol. 38 ›› Issue (1): 55-64.doi: 10.11821/xb198301006
• 论文 •
张立成, 董文江, 郑建勋, 赵桂久
Zhang Li-cheng, Dong Wen-jiang, Zheng Jian-xun, Zhao Gui-jiu
Abstract: In this article the metal forms of Xiangjiang aquatic sediment are discussed.The wet and hot climate of subtropical zone as well as the carbonate environment inupper and middle reaches of Xiangjiang rebuilt in some specific regional factors for themetal forms.1. The proportion of the exchangeable trace metal concentration in the sediments is low, generally not over 2%. The proportion of the major metals in the sediments is 10-30% for Ca, 2-6% for Mn and iron the lowest.2. Beside Cu, there is a higher proportion of content of the trace metals of carbonate forms than the hydrous Fe/Mn oxides forms metal, they amount to 30-81% for the total content.The two processes mentioned above suggest that the major mechanism of self-purifica-tion in the water for trace metals is effected by the human activities pollution.3. These processes might exist simultaneously as the proportion and distribution of the trace metals for hydrous Fe/Mn oxides-form, carbonate and organic substances forms, however the major trend is different, Cd and Zn were associated by carbonate and hydrous Fe/Mn oxides and carbonate for Pb, and organic substances for Cu.4. Except the content of Fe which is more than 90%, the normal concentration of other metals is about 35-50% in residual fraction.
张立成, 董文江, 郑建勋, 赵桂久. 湘江河流沉积物重金属的形态类型及其形成因素[J]. 地理学报, 1983, 38(1): 55-64.
Zhang Li-cheng, Dong Wen-jiang, Zheng Jian-xun, Zhao Gui-jiu . THE METALFORM AND FORM FACTORS OF HEAVY METALS IN THE XIANGJIANG RIVER SEDIMENTS[J]. Acta Geographica Sinica, 1983, 38(1): 55-64.
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