干旱区生态环境知识资源中心(Arid): Groundwater nitrate contamination in an area using urban wastewaters for agricultural irrigation under arid climate condition, southeast of Tehran, Iran

Arid

DOI	10.1016/j.agwat.2019.04.015
	Groundwater nitrate contamination in an area using urban wastewaters for agricultural irrigation under arid climate condition, southeast of Tehran, Iran
	Nejatijahromi, Zohre 1,2; Nassery, Hamid Reza 1; Hosono, Takahiro 2,3; Nakhaei, Mohammad 4; Alijani, Farshad 1; Okumura, Azusa 2,3
通讯作者	Nassery, Hamid Reza
来源期刊	AGRICULTURAL WATER MANAGEMENT
ISSN	0378-3774
EISSN	1873-2283
出版年	2019
卷号	221 页码:397-414
英文摘要	Nitrate contamination of groundwater has been identified as a major environmental problem of the last few decades. In this study, stable isotope ratios (delta N-15-NO3-, delta O-18-NO3-, delta O-18-H2O and delta D-H2O) of groundwater samples from the Varamin aquifer located southeast of Tehran, Iran, were analyzed in two periods, in order to determine the sources of nitrate pollution and nitrogen transformation processes where treated wastewater from the capital city is used for irrigation purpose. The approach in this study was based on isotopic fingerprinting of nitrate contaminant sources of groundwater using delta N-15-NO3- and delta O-18-NO3-. In addition, a hierarchical cluster analysis was applied to classify groundwater samples into three different hydrochemical facieses (groups 1-3). Furthermore, the stable isotope ratios of molecular water showed that most of the groundwater samples were plotted along the local meteoric line and distinguishable isotopic compositions from those of river water and treated wastewater. Stable isotopic analysis together with these hydrochemical dassifications suggested that the main sources of nitrate in groundwater are chemical fertilizers and treated wastewater in the irrigated area (group 1) in addition to domestic wastes in the residential area (group 2) and chemical fertilizers and sewage water recharged by the Shour River (group 3). Denitrification is a major transformation process occurring at the western and southwestern parts of the aquifer. Seasonal variations in the nitrogen and oxygen isotopic compositions of nitrate were more obvious in the wet season compared to the dry season. This study is unique in that it describes how groundwater nitrate contamination is enhanced in the area using treated wastewater for irrigation purposes. The results of the current study are applicable for other areas with similar settings, since treated wastewaters are important water resources for water users in arid to semi-arid regions all over the world.
英文关键词	Groundwater Nitrate contamination Stable isotope ratios Denitrification Cluster analysis
类型	Article
语种	英语
国家	Iran ; Japan
收录类别	SCI-E
WOS记录号	WOS:000472698600039
WOS关键词	SURFACE-WATER INTERACTIONS ; STABLE-ISOTOPE ; LAND-USE ; SHALLOW GROUNDWATER ; TEMPORAL VARIATIONS ; NITROGEN ISOTOPE ; AQUIFER SYSTEM ; RIPARIAN ZONE ; RIVER-BASIN ; DENITRIFICATION
WOS类目	Agronomy ; Water Resources
WOS研究方向	Agriculture ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/214029
作者单位	1.Shahid Beheshti Univ, Dept Minerals & Hydrogeol, Fac Earth Sci, Evin Ave, Tehran, Iran; 2.Kumamoto Univ, Prior Org Innovat & Excellence, 2-39-1 Kurokami, Kumamoto, Japan; 3.Kumamoto Univ, Fac Adv Sci & Technol, 2-39-1 Kurokami, Kumamoto, Japan; 4.Kharazmi Univ, Dept Appl Geol, Fac Earth Sci, Hesarak, Karaj, Iran
推荐引用方式 GB/T 7714	Nejatijahromi, Zohre,Nassery, Hamid Reza,Hosono, Takahiro,et al. Groundwater nitrate contamination in an area using urban wastewaters for agricultural irrigation under arid climate condition, southeast of Tehran, Iran[J],2019,221:397-414.
APA	Nejatijahromi, Zohre,Nassery, Hamid Reza,Hosono, Takahiro,Nakhaei, Mohammad,Alijani, Farshad,&Okumura, Azusa.(2019).Groundwater nitrate contamination in an area using urban wastewaters for agricultural irrigation under arid climate condition, southeast of Tehran, Iran.AGRICULTURAL WATER MANAGEMENT,221,397-414.
MLA	Nejatijahromi, Zohre,et al."Groundwater nitrate contamination in an area using urban wastewaters for agricultural irrigation under arid climate condition, southeast of Tehran, Iran".AGRICULTURAL WATER MANAGEMENT 221(2019):397-414.