| 引用本文: | 张琨,蓝江湖,沈振兴,徐海.2010.青海湖流域水化学分析及水质初步评价[J].地球环境学报,(3):162-168 |
| ZHANG Kun,LAN Jiang-hu,SHEN Zhen-xing,XU Hai.2010.The chemical composition and quality evaluation of surface water in Qinghai Lake areas[J].Journal of Earth Environment,(3):162-168 |
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| 摘要: |
| 为了解 青海湖流域水化学的组成及水质状况，于2009 年冬季采集 了青海湖湖水及流域
内主要支流河水样品 ，并分析了水样中的化学 组成。结果表明，青海湖水质总体较好，但部分指
标如pH、COD 已达到水质Ⅴ级标准。另SO4
2- 和Ca2+ 是青海湖支流水样中最主要的阴阳离子，
而湖水中则是Cl- 和Na+。溶解性有机碳（DOC）和化学需氧量（COD）表现出相似的变化趋势，
反映出青海湖流域水系的有机物污染严重。分析青海湖湖水中Mg2+/Ca2+ 以及河水中Cl-/Na+ 数据
表明青海湖湖水化学组成主要由蒸发和结晶作用 产生，河水 的化学组成则主要是由于碳酸盐的分
化作用生成。 |
| 关键词: 青海湖 水化学特性 水质分析 离子组成 |
| DOI：10.7515/JEE201003002 |
| CSTR： |
| 分类号:X13 |
基金项目:国家科技支撑计划:青海湖流域生态和环境综合监测与评估技术(2007BAC30B01)
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| The chemical composition and quality evaluation of surface water in Qinghai Lake areas |
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ZHANG Kun1,2, LAN Jiang-hu2, SHEN Zhen-xing1,2, XU Hai2
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1. Department of Environmental Science and Engineering, Xi'an Jiaotong University, Xi'an 710049, China; 2. State
Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an
710075, China
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| Abstract: |
| In or der to understand the chemical composition and the quality of surface wat er in Qinghai
Lake areas, water samples in river and lake were collected in 2009. In general, the water quality of
surface water in Qinghai Lake was pretty good, although pH and COD exceeded the class V of water
quality standard. Ca2+ and SO4
2- were the main cation and anion of river water samples, while Cl- and
Na+ were the main ionic species of lake water samples. The levels of DOC and COD revealed the serious
organic pollution of surface water in Qinghai Lake areas, and some measurement should be taken to
improve the water quality in this area . The ions composition of water between river and lake showed
remarkable different, which implied that the chemical composition of the lake water was mainly decided
by evaporation and crystallization, while the chemical composition of the river water was mainly decided
by differentiation of carbonate. |
| Key words: Qinghai Lake hydro chemical characteristics water analysis ionic composition |
