NDLI: Identifying interactions between river water and groundwater in the North China Plain using multiple tracers

Content Provider	Springer Nature Link
Author	Dun, Yu Tang, Changyuan Shen, Yanjun
Copyright Year	2013
Abstract	Interactions between river water and groundwater have been used to help understand the movement of water and to evaluate water quality in the semi-arid area of the North China Plain (NCP). Stable isotopes, chlorofluorocarbons (CFCs) and hydrochemistry were used to study the influence of surface water from the Xiao River on regional groundwater. Using a mass balance approach based on chloride concentrations, hydrogen and oxygen isotope ratios, the average fraction of surface water recharging to groundwater was 50–60 %. CFC results indicated that the groundwater recharge age varied from 22.5 to 39.5 years. The vertical flow velocity of groundwater was estimated at about 1.8–3.5 m year$^{−1}$. Nitrate concentrations in groundwater varied from 9.42 to 156.62 mg L$^{−1}$, and exceeded 50 mg L$^{−1}$ in most aquifers shallower than 80 m bordering the Xiao River. The δ $^{15}$N-NO$_{3}$ data indicate that the major sources of nitrogen in groundwater are human sewage and animal excreta. Because groundwater is the main source of drinking water, there should be concern about public health related to the elevated nitrate concentrations in the NCP.
Starting Page	99
Ending Page	110
Page Count	12
File Format	PDF
ISSN	18666280
Journal	Environmental Earth Sciences
Volume Number	72
Issue Number	1
e-ISSN	18666299
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2013-12-14
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	River water Groundwater Stable isotope Nitrate CFCs Hydrochemistry Geology
Content Type	Text
Resource Type	Article
Subject	Global and Planetary Change Earth-Surface Processes Soil Science Environmental Chemistry Pollution Geology Water Science and Technology

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