Affiliation:
1. Research Center for Integrated Control of Watershed Water Pollution, Chinese Academy of Environmental Sciences, Beijing 100012, China
2. College of Environmental Sciences and Engineering, Peking University, Beijing 100871, China
Abstract
In order to investigate the hydrochemical characteristics and their controlling factors, 212 water samples from the Yarlung Tsangpo River and its tributaries were collected over three precipitation periods in 2018 and analyzed using mathematical statistics, the Gibbs and ion ratio methods, and principal component analysis. The results showed the following: (1) The cations in the water were mainly Ca2+, Na+ and Mg2+, and the anions HCO3− and SO42− were predominant, accounting for more than 97% of the total anion concentrations. The concentration of total dissolved solids (TDS) was 204.51 mg/L. The water chemistry type was SO4·(HCO3)−Ca·(Mg) water. (2) The concentrations of major ions in the Yarlung Tsangpo River fluctuate, but in general, the vast majority of the major ions in the water follow the trend of both first increasing and then decreasing in the three precipitation periods. The hydrochemical features of the Yarlung Tsangpo Basin have seasonal differences. (3) The Gibbs model and the PCA analyses showed that the Yarlung Tsangpo River water chemical components are mainly affected by rock weathering. In addition, the influence of the mining industry also plays an important role. The heavy metal concentrations in the three precipitation periods of the Yarlung Tsangpo River could reach the standard of first-class surface water quality.
Funder
Major project of the Ministry of Science and Technology
Subject
Water Science and Technology,Aquatic Science,Geography, Planning and Development,Biochemistry
Reference31 articles.
1. The tectonic evolution of the Tibetan Plateau;Dewey;Philos. Trans. R. Soc. Lond. A Math. Phys. Eng. Sci.,1988
2. Study on stable isotope in river water and precipitation in Naqu River basin, Tibetan Plateau;Tian;Adv. Water Sci.,2002
3. Variations of the physicochemical parameters and metal levels and their risk assessment in 2 urbanized Bagmati River, Kathmandu, Nepal;Paudyal;J. Chem.,2016
4. Water quality in the Tibetan Plateau: Major ions and trace elements in the headwaters of four major asian rivers;Huang;Sci. Total Environ.,2009
5. Major ion chemistry of the Yarlung Tsangpo–Brahmaputra river: Chemical weathering, erosion, and CO2 consumption in the southern Tibetan Plateau and eastern syntaxis of the Himalaya;Hren;Geochim. Cosmochim. Acta,2007
Cited by
3 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献