| 长江口主要阳离子随盐度变化的研究 |
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| 引用本文： | 张恩仁,高磊,张经.长江口主要阳离子随盐度变化的研究[J].水科学进展,2003,14(4):442-446. |
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| 作者姓名： | 张恩仁 高磊 张经 |
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| 作者单位： | 华东师范大学河口海岸国家重点实验室, 上海, 200062 |
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| 基金项目： | 国家杰出青年基金资助项目(49525609)~~ |
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| 摘 要： | 以追踪混合水团的方式采样,并测定了长江河口混合区表层和底层中主要阳离子Mg2+、Ca2+、Na+和K+的浓度,讨论了长江口水体的pH分布特征和主要阳离子的混合特征.结果表明,长江口水体的pH状况受人为污染影响较小,河口混合区主要阳离子的浓度随着水体盐度的增大而增大,Ca/Mg比值随水体盐度的增大而迅速减小,且主要阳离子浓度相对于盐度的变化在表层和底层水体间没有显著的差别.在长江河口混合区主要阳离子的浓度及其比值随盐度的变化可用线性混合模型进行较好地预测和模拟.
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| 关 键 词： | 长江口 阳离子 盐度 研究 |
| 文章编号： | 1001-6791(2003)04-442-05 |
| 收稿时间： | 2002-06-24 |
| 修稿时间： | 2002年6月24日 |
Variation of major cations against salinity in the Yangtze River estuary |
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| ZHANG En-ren,GAO Lei,ZHANG Jing.Variation of major cations against salinity in the Yangtze River estuary[J].Advances in Water Science,2003,14(4):442-446. |
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| Authors: | ZHANG En-ren GAO Lei ZHANG Jing |
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| Institution: | State Key Labor atory of Estuarine and Coastal Research, East China Normal University, Shanghai 200062, China |
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| Abstract: | Surface and bottom water samples in the Yangtze River estuary were collected in the summer of 2001,following estuarine mixing procedure.Major ions Mg2+,Ca2+,Na+ and K+ are determined.The results show that pollution has litt le in fluence on pH situation in the Yangtze River estuary.Concentrations of major ions in mixing zone increase with salinity and the ratio of dissolved Ca/Mg decrease.Change in major ions in the Yangtze River estuary can be simulated by a linear mixing model between riverine and sea waters.There is no obvious difference between surface and bottom waters in major ion compositions. |
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| Keywords: | Yangtze River estuary cations salinity research |
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