GYIG OpenIR  > 环境地球化学国家重点实验室
Sulfate sources constrained by sulfur and oxygen isotopic compositions in the upper reaches of the Xijiang River, China
Jing Liu;  Siliang Li;  Jun Zhong;  Xuetao Zhu;  Qingjun Guo;  Yunchao Lang;  Xiaokun Han
2017
Source PublicationActa Geochimica
Volume36Issue:4Pages:611-618
Abstract

While it is critical to accurately understand the sources and transformation of sulfate based on time-series analysis, there are limited studies on temporal variation of sulfate in rivers and on rock weathering by sulfuric acids. We conducted a monthly sampling campaign in the Bei-pan,Nanpan,and Hongshui Rivers over the course of one hydrological year. This study examined seasonal variations in riverine sulfate impacted by the monsoon climate in the upper reaches of the Xijiang River basin. In general,the SO_4~(2-) contents in these rivers dropped from relatively high levels to low values during the high-flow season,in response to increasing discharge. The sulfate was generally enriched in heavy isotopes during the low-flow season compared to the high-flow season. The calculated results indicate that the riverine sulfate was mainly derived from sulfide oxidation, but that evaporite dissolution could be an important source during the low-flow season, based on isotopic evidence. Mine drainage is likely an important source of sulfate to these rivers during the high-flow season due to contributions from fast surface flow,which responds to frequent heavy rain in monsoonal climate regions. A relatively high proportion of HCO_3~- was found to be derived from rock weathering by sulfuric acid during the high-flow season when compared to that observed during the low-flow season. The results suggest that approximately one quarter of the HCO_3~- in the Hongshui River originated from carbonate weathering by sulfuric acid derived from the oxidation of sulfide. Such information on the specific dual isotopic characteristics of riverine sulfate throughout a hydrological year can provide unique evidence for understanding the temporal variability of sulfate concentrations and weathering processes in rivers.

KeywordSulfur Isotope Oxygen Isotope Riverine Sulfate Carbonate Weathering Xijiang River
Indexed ByEI
Language英语
Document Type期刊论文
Identifierhttp://ir.gyig.ac.cn/handle/42920512-1/7711
Collection环境地球化学国家重点实验室
Affiliation1.Institute of Geochemistry, Chinese Academy of Sciences, The State Key Laboratory of Environmental Geochemistry, Guiyang, Guizhou 55002, China
2.Institute of Surface-Earth System Science, Tianjin University, Tianjin 300072, China
3.Center for Environmental Remediation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China
4.University of Chinese Academy of Sciences, Beijing 100049, China
First Author Affilication中国科学院地球化学研究所
Recommended Citation
GB/T 7714
Jing Liu;Siliang Li;Jun Zhong;Xuetao Zhu;Qingjun Guo;Yunchao Lang;Xiaokun Han. Sulfate sources constrained by sulfur and oxygen isotopic compositions in the upper reaches of the Xijiang River, China[J]. Acta Geochimica,2017,36(4):611-618.
APA Jing Liu;Siliang Li;Jun Zhong;Xuetao Zhu;Qingjun Guo;Yunchao Lang;Xiaokun Han.(2017).Sulfate sources constrained by sulfur and oxygen isotopic compositions in the upper reaches of the Xijiang River, China.Acta Geochimica,36(4),611-618.
MLA Jing Liu;Siliang Li;Jun Zhong;Xuetao Zhu;Qingjun Guo;Yunchao Lang;Xiaokun Han."Sulfate sources constrained by sulfur and oxygen isotopic compositions in the upper reaches of the Xijiang River, China".Acta Geochimica 36.4(2017):611-618.
Files in This Item:
File Name/Size DocType Version Access License
Sulfate sources cons(807KB)期刊论文作者接受稿开放获取CC BY-NC-SAView Application Full Text
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Jing Liu;Siliang Li;Jun Zhong;Xuetao Zhu;Qingjun Guo;Yunchao Lang;Xiaokun Han]'s Articles
Baidu academic
Similar articles in Baidu academic
[Jing Liu;Siliang Li;Jun Zhong;Xuetao Zhu;Qingjun Guo;Yunchao Lang;Xiaokun Han]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Jing Liu;Siliang Li;Jun Zhong;Xuetao Zhu;Qingjun Guo;Yunchao Lang;Xiaokun Han]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: Sulfate sources constrained by sulfur and oxygen isotopic compositions in the upper reaches of the Xijiang River, China.pdf
Format: Adobe PDF
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.