Spatial and temporal variation of salt ions in the surface water of Shule River Valley in Gansu Province, China
文献类型： 外文期刊
作者： Guo, Quan En 1 ; Li, Bao Guo 2 ; Nan, Li Li 3 ; Nie, Zhong Nan 4 ; Cao, Shi Yu 1 ;
作者机构： 1.Gansu Acad Agr Sci, Inst Soil Fertilizer & Water Saving, Nongkeyuanxincun 1, Lanzhou 730070, Gansu, Peoples R China
2.China Agr Univ, Coll Resources & Environm Sci, Yuanmingyuan West Rd 2, Beijing 100193, Peoples R China
3.Gansu Agr Univ, Coll Pratacultural Sci, Yingmencun 1, Lanzhou 730070, Gansu, Peoples R China
4.Dept Econ Dev Jobs Transport & Resources, 915 Mt Napier Rd, Hamilton, Vic 3300, Australia
关键词： chlorine ion; sodium ion; spatial and temporal variation; water quality parameters
期刊名称：WATER SCIENCE AND TECHNOLOGY-WATER SUPPLY （ 影响因子：1.033； 五年影响因子：1.152 ）
ISSN： 1606-9749
年卷期： 2019 年 19 卷 2 期
页码：
收录情况： SCI
摘要： The objective of the study was to assess the quality of the Shule River water for irrigational purposes. Surface water samples were collected along the course of the river in May and October 2012. The samples were analyzed for pH, electrical conductivity (EC), bicarbonate, chloride, sulphate, sodium, potassium, calcium and magnesium. Surface water was generally alkaline (average pH 8.17) and water pH and total dissolved solids in May were higher than those in October. EC ranged from 0.24 to 2.15 mS cm(-1). Sodium was identified as the dominant cation, sulphate was identified as the dominant anion in May for both samples of river water but, in October, the dominant anions are respectively sulphate, bicarbonate and chloride from the upper region to the lower region. The total dissolved solids, chloride and sodium were found to exceed the permissible limits for irrigation water in the lower region. According to the principal factor analysis results, among water quality parameters measured in this study, chloride is the best indicator for monitoring water quality. The results revealed a deteriorating water quality in the lower region of the river.
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