期刊
ECOLOGICAL INDICATORS
卷 61, 期 -, 页码 309-316出版社
ELSEVIER
DOI: 10.1016/j.ecolind.2015.09.030
关键词
Mountain reservoir; Mercury; PCA; Water quality index; Yellow River reservoir
资金
- Critical Patented Projects in the Control and Management of National Polluted Water Bodies [2012ZX07404-003]
- National Science and Technology Benefiting Projects [2013GS370202]
- Foundation for Outstanding Young Scientist in Shandong Province [BS2014HZ018]
- Special Project of Taishan Scholar Construction Engineering [ts200640025]
To assess water quality of reservoirs in lower reaches of Yellow River using the water quality index (WQI) method and try to compare water quality and main contaminations of mountain and Yellow River reservoirs, water samples were carried out over 6 years. Nine water variables were selected to participate WOJ calculation by Principal Component Analysis (PCA). WQI values ranged from 17.8 to 77.8 in five reservoirs, which indicated good to very poor water quality of reservoirs. No significant differences in WQIs were found between mountain and Yellow River reservoirs. A major finding from our study is that mercury was the main contamination in 5 reservoirs, while TP (total phosphorus) and SO4 were another main contaminations in mountain and Yellow River reservoirs, respectively. Application of the WQI is suggested to be a helpful tool that enables the public and decision makers to evaluate water quality of drinking reservoirs in lower reaches of Yellow River. (C) 2015 Elsevier Ltd. All rights reserved.
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