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| Characteristics of Hydrogen, Oxygen Isotopes and Trace Elements in Surface Water of Aba Area in Sichuan |
| SHI Ze-ming1,2, WANG Xin-yu1,2, NI Shi-jun1, 2 |
1. Geochemistry Department of Chengdu University of Technology, Chengdu, Sichuan 610059, China;
2. Key Laboratory of Nuclear Techniques of Geosciences,Chengdu, Sichuan 610059, China |
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Abstract Aba is a region with high altitude, located in the northwest of Sichuan, and at the junction with Qinghai and Gansu provinces. Aba is rich in surface water resources that the Yangtze River and Yellow River both flow across this area. Through systematically sampling the rivers water (76), wells water (7) and streams (8), and analyzing the contents of 18O, D and trace elements in water, we revealed that ① The contents of D and 18O in river water of Aba were significantly higher than streams, wells and tap water. Linear correlation analysis indicated that the enrichment of 18O was closely related to the dissolution of sulfuric minerals; ② There was obvious hydraulic link among well water, tap water and streams in Aba; ③ In Aba, isotopic composition of oxygen and hydrogen in river water of Yellow River system were closing to that of Yangtze River system, which was due to the same rainfall source at the same area; ④ The trace elements of surface water were quite close with the surrounding rocks, with the characteristics of high concentrations of Ba, Zn, Cr, and low concentrations of As, Pb, Cd, which indicated that the trace elements in surface water was mainly affected by the geological background.
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Received: 02 February 2015
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2015, Vol. 2 
