NDLI: Enrichment and Sources of Nitrogen in Groundwater in the Turpan-Hami Area, Northwestern China

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Enrichment and Sources of Nitrogen in Groundwater in the Turpan-Hami Area, Northwestern China

Content Provider	Springer Nature Link
Author	Jiang, Wanjun Wang, Guangcai Sheng, Yizhi Zhao, Dan Liu, Chenglong Guo, Yonghai
Copyright Year	2016
Abstract	High contents of nitrogen in groundwater were found in the Turpan-Hami area, Xinjiang, China, whereas the enrichment characteristics and sources of nitrogen were poorly understood. In this study, totally 19 groups of groundwater samples were collected in the Turpan-Hami area for chemistry and isotope analysis. Combining with the hydrochemical, hydrogen, oxygen, and nitrogen stable isotopes data, the distribution and sources of nitrogen of groundwater in the Turpan-Hami area were analyzed. The results showed that the groundwater mainly originated from the atmospheric precipitation, and the evaporation was the dominant mode for groundwater discharge in Turpan-Hami area. The concentration of nitrate (NO 3 - –N) in groundwater varies from 23.29 to 1819.49 mg/L. Obvious enrichment trend of nitrogen was observed along the groundwater flow direction. The increase of nitrate, nitrite, and ammonia concentrations were consistent with that of TDS in the area. The concentrations of nitrogen species were dominated by the strong evaporation rather than human activity except for one sample. The δ$^{15}$N-NO 3 - in groundwater ranges from −0.6 to +31 ‰, and mostly in a range of +4.1 to +19.3 ‰. The δ$^{18}$O–NO$_{3}$ $^{−}$ ranges from +16.3 to +37.4 ‰. The result indicated that nitrate in groundwater was mainly derived from atmospheric precipitation, and the conversion of nitrate, nitrite, and ammonia in groundwater was not active in the area.
Starting Page	389
Ending Page	400
Page Count	12
File Format	PDF
ISSN	24519766
Journal	Exposure and Health
Volume Number	8
Issue Number	3
e-ISSN	24519685
Language	English
Publisher	Springer Netherlands
Publisher Date	2016-05-09
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Hydrochemical characteristics Stable nitrogen and oxygen isotopes Nitrate, nitrite, and ammonia Atmospheric precipitation Turpan-Hami area Waste Water Technology Water Pollution Control Water Management Aquatic Pollution Water Quality/Water Pollution Water and Health Pollution Environmental Health
Content Type	Text
Resource Type	Article
Subject	Pollution Health, Toxicology and Mutagenesis Public Health, Environmental and Occupational Health Water Science and Technology

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Enrichment and Sources of Nitrogen in Groundwater in the Turpan-Hami Area, Northwestern China