Hydrochemistry and source apportionment of boron, sulfate, and nitrate in the Fen River, a typical loess covered area in the eastern Chinese Loess Plateau

doi:10.1016/j.envres.2021.112570

IEECAS OpenIR > 生态环境研究室

	Hydrochemistry and source apportionment of boron, sulfate, and nitrate in the Fen River, a typical loess covered area in the eastern Chinese Loess Plateau
	Xiao, Jun 1,2; Lv, Guorui 1,3; Chai, Ningpan 1; Hu, Jing 1; Jin, Zhangdong 1,2
通讯作者	Xiao, Jun(xiaojun@ieecas.cn)
	2022-04-15
发表期刊	ENVIRONMENTAL RESEARCH
ISSN	0013-9351
卷号	206 页码:13
摘要	Fen River Basin (FRB) is water-deficient and strongly influenced by human activities in the eastern Chinese Loess Plateau. The spatio-temporal variation and controlling factors of hyrochemistry and quality, sources of high boron, sulfate, and nitrate of surface waters in FRB were unclear. Major ions, delta 11B, delta 15N, and delta 18O in surface waters in dry season and wet season of FRB were analyzed and correlation analysis (CA), principal component analysis (PCA), self-organizing map (SOM), forward model, and Bayesian isotope mixing model (MixSIAR) were used to solve above problems. Results showed that average riverine delta 11B, delta 15N, and delta 18O of FRB was 7.8%o, 11.2%o, and 1.3%o (1SD), respectively. Dissolved solutes ranked midstream > downstream > upstream with water type of Na +-Cl-, Ca2+-Mg2+-Cl-, and Ca2+-HCO3-, respectively. Low dissolved solutes were in forest areas while high values were in cropland and city areas. SOM analysis indicated that hydrochemistry was both influenced by natural (upstream) and pollutional input (midstream and downstream) and variation between dry season and wet season was minor. The abnormally high boron concentrations were mainly from silicate weathering (43%) and evaporites dissolution of loess (32%), urban and industrial input contributed 15% of riverine boron. High SO42- (207 +/- 267 mg/L, 1SD) was mainly from sulfates. delta 15N and delta 18O analysis indicated that nitrification was the primary N cycling process. Further, MixSIAR showed that NO3- was mainly from municipal sewage (-67%) and the total contribution of chemical fertilizer and soil nitrogen was -30% with slightly higher values in upstream and wet season. Influenced by land-use types, evaporite dissolution, and anthropogenic input, water quality below midstream was worse and strict sewage reduction policies must be developed. This study highlights the significant influence of evaporite dissolution of loess and anthropogenic input (urban and industrial input for B and sewage for NO3- ) on hydrochemistry and water quality.
关键词	Hydrochemistry Loess weathering Spatial-temporal variation Source identification Fen river
DOI	10.1016/j.envres.2021.112570
关键词[WOS]	DRINKING-WATER ; ISOTOPE RATIOS ; CONTAMINATION ; GROUNDWATER ; POLLUTION ; INSIGHTS ; MODEL ; BASIN ; TRANSFORMATIONS ; MECHANISMS
收录类别	SCI ; SCI
语种	英语
资助项目	Strategic Priority Research Program of Chinese Academy of Sciences[XDB40020500] ; Shaanxi Science Fund for Distinguished Young Scholars[2020JC-030] ; CAS Light of West China program[XAB 2018A02]
WOS研究方向	Environmental Sciences & Ecology ; Public, Environmental & Occupational Health
项目资助者	Strategic Priority Research Program of Chinese Academy of Sciences ; Shaanxi Science Fund for Distinguished Young Scholars ; CAS Light of West China program
WOS类目	Environmental Sciences ; Public, Environmental & Occupational Health
WOS记录号	WOS:000744121000006
出版者	ACADEMIC PRESS INC ELSEVIER SCIENCE
引用统计	被引频次：38[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ieecas.cn/handle/361006/17420
专题	生态环境研究室
通讯作者	Xiao, Jun
作者单位	1.Chinese Acad Sci IEECAS, Inst Earth Environm, SKLLQG, Xian 710061, Peoples R China 2.Chinese Acad Sci, Ctr Excellence Quaternary Sci & Global Change, 97 Yanxiang Rd, Xian 710061, Shaanxi, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Xiao, Jun,Lv, Guorui,Chai, Ningpan,et al. Hydrochemistry and source apportionment of boron, sulfate, and nitrate in the Fen River, a typical loess covered area in the eastern Chinese Loess Plateau[J]. ENVIRONMENTAL RESEARCH,2022,206:13.
APA	Xiao, Jun,Lv, Guorui,Chai, Ningpan,Hu, Jing,&Jin, Zhangdong.(2022).Hydrochemistry and source apportionment of boron, sulfate, and nitrate in the Fen River, a typical loess covered area in the eastern Chinese Loess Plateau.ENVIRONMENTAL RESEARCH,206,13.
MLA	Xiao, Jun,et al."Hydrochemistry and source apportionment of boron, sulfate, and nitrate in the Fen River, a typical loess covered area in the eastern Chinese Loess Plateau".ENVIRONMENTAL RESEARCH 206(2022):13.