气候变化领域集成服务门户(CCPortal): Water chemistry of the headwaters of the Yangtze River

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DOI	10.1007/s12665-015-4174-4
	Water chemistry of the headwaters of the Yangtze River
	Qu, Bin; Sillanpaa, Mika; Zhang, Yulan; Guo, Junming; Wahed, Mahmoud S. M. Abdel; Kang, Shichang
发表日期	2015
ISSN	1866-6280
EISSN	1866-6299
卷号	74 期号:8
英文摘要	A total of 31 river water samples were collected from the headwater of the Yangtze River and its tributaries across Shigu Town to Mt. Tangula region. Water chemistry analysis was carried out to investigate water quality in the upstream Yangtze River. The results show that the headwaters of Yangtze River are turbid and have an alkaline environment with pH ranges from 8.3 to 9.3. The oxidation reduction potential (ORP) of the water varies from -77.1 to -134.2 mv with an average of -88.8 mv, indicating an anoxic water surface. Based on the ions analysis, the water chemistry of headwaters of the Yangtze River is affected by mineral (magnesium and calcium sulfate) weathering, evaporation-crystallization processes and ground water discharge. Concentrations of ions and elements except Hg in the headwaters of Yangtze River presented a trend of decreasing with the downward of altitude. All heavy metals and other toxic elements concentrations in this study were under the WHO and GB (China national standards) guidelines. But attention should be given to Hg because the concentration of Hg (2.6 ng/l) was much higher than the world average (0.07 ng/l) and it increased as the river flows down, which may become a threat to the inhabitants in the downstream area of the river.
关键词	Major ions Heavy metals Water quality Yangtze river Tibetan plateau
学科领域	Environmental Sciences & Ecology; Geology; Water Resources
语种	英语
WOS研究方向	Environmental Sciences ; Geosciences, Multidisciplinary ; Water Resources
来源期刊	ENVIRONMENTAL EARTH SCIENCES
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/111760
作者单位	Lappeenranta Univ Technol, Lab Green Chem, Mikkeli 50130, Finland
推荐引用方式 GB/T 7714	Qu, Bin,Sillanpaa, Mika,Zhang, Yulan,et al. Water chemistry of the headwaters of the Yangtze River[J]. 中国科学院西北生态环境资源研究院,2015,74(8).
APA	Qu, Bin,Sillanpaa, Mika,Zhang, Yulan,Guo, Junming,Wahed, Mahmoud S. M. Abdel,&Kang, Shichang.(2015).Water chemistry of the headwaters of the Yangtze River.ENVIRONMENTAL EARTH SCIENCES,74(8).
MLA	Qu, Bin,et al."Water chemistry of the headwaters of the Yangtze River".ENVIRONMENTAL EARTH SCIENCES 74.8(2015).