| 南极洲赖特谷万达盐湖中铬的垂直迁移 |
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| 引用本文： | 于昇松,W.J.Green,G.A.Delanoy.南极洲赖特谷万达盐湖中铬的垂直迁移[J].海洋与湖沼,1992,23(6):591-598. |
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| 作者姓名： | 于昇松 W.J.Green G.A.Delanoy |
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| 作者单位： | 中国科学院盐湖研究所，School of Interdisciplinary studies Miami University，Ohio，U.S.A.，Department of Chemistry，Miami University，Ohio，U.S.A. 西宁 810008 |
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| 基金项目： | 美国科学基金会(NSF)资助 |
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| 摘 要： | 南极洲万达湖湖水上部为氧化环境,铬浓度较低,Cr~(6+)占主导地位,主要以CrO_4~(2-)形式存在;下部为还原环境,铬浓度高,Cr~(3+)为主,以Cr(OH)_2~+和Cr(OH)~(2+)形式存在。湖水中锰、铁的氧化物及氢氧化物颗粒对铬离子的吸附和释放过程,控制了湖水铬浓度的变化。
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| 关 键 词： | 铬 盐湖 万达湖 南极洲 |
VERTICAL MIGRATION OF CHROMIUM IN VANDA SALINE LAKE OF WRIGHT VALLEY, ANTARCTICA |
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| Yu Shengsong.VERTICAL MIGRATION OF CHROMIUM IN VANDA SALINE LAKE OF WRIGHT VALLEY, ANTARCTICA[J].Oceanologia Et Limnologia Sinica,1992,23(6):591-598. |
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| Authors: | Yu Shengsong |
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| Abstract: | Vanda Lake is located in Wright Valley of Antarctica, it is a saline lake with typical dimictic calcium chloride. This paper discusses the vertical geochemical distribution of chromium concentration. In Vanda Lake water, chromium exists in two valence states: Cr6+ and Cr3+. In oxygenated fresh lake water, chromium concentration is low and Cr6+ concentration predominates, and chromium exists in CrO42- form. In reduced brine, chromium concentration is high and Cr3+ concentration predominates and chromium exists in Cr(OH)2+ and Cr(OH)2+ form. The important role of sinking particles in the vertical migration of chromium in lake-water is discussed. |
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| Keywords: | Antarctica Vanda Lake Sinking particles Migration |
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