干旱区生态环境知识资源中心(Arid): Source identification of nitrate in the upper aquifer system of the Wadi Shueib catchment area in Jordan based on stable isotope composition

Arid

	Source identification of nitrate in the upper aquifer system of the Wadi Shueib catchment area in Jordan based on stable isotope composition
	Obeidat Mutawakil; Awawdeh Muheeb; Al-Kharabsheh Noor; Al-Ajlouni Ahmad
来源期刊	干旱区科学
ISSN	1674-6767
出版年	2021
卷号	13 期号:4 页码:1674-6767
英文摘要	Groundwater forms the main freshwater supply in arid and semi-arid areas, and contamination of this precious resource is complicated by the slow rate of recharge in these areas. Nitrate contamination of groundwater is a global water quality problem, as it entails threat to human health as well as aquatic ecosystems. Source identification of contamination is the cornerstone and a prerequisite for any effective management program of water quality. Stable isotope composition of the dissolved nitrate (delta~(15)N-NO_3~- and delta~(18)O-NO_3~-) has been applied to identify NO_3~- sources and the main transformation processes in the upper aquifer system (A1/2, A4, and B2/A7 aquifers) in the Wadi Shueib catchment area, Jordan. Moreover, the stable isotope compositions of the groundwater (delta2H-H_2O and delta~(18)O-H_2O) in conjunction with the groundwater hydrochemistry were integrated to investigate the origin and evolution of the groundwater. Results revealed that groundwater in the study area is fresh and hard-very hard water, and mainly a Ca-Mg- Cl type. NO_3~- concentration was in the range of 7.0-74.0 mg/L with an average of 37.0 mg/L. Most of the samples showed concentration higher than the natural background concentration of NO_3~- (5.0-10.0 mg/L). The delta2H-H_2O and delta~(18)O-H_2O values indicated that the groundwater is meteoric, and of Mediterranean origin, with a strong evaporation effect. The delta~(15)N-NO_3~- values ranged between 6.0 and 11.3 with an average of 8.7, and the delta~(18)O-NO_3~- values ranged between 1.6 and 5.9 with an average of 3.4. These values are in conformity with the stable isotope composition of nitrate derived the nitrification of wastewater/manure, and soil NH4. Nitrification and denitrification are the main transformation processes affecting nitrogen species. Statistical analysis revealed no significant differences in the delta2H-H_2O and delta~(18)OH_2O values, and delta~(15)N-NO_3~- and delta~(18)O-NO_3~- values for the three aquifers (A1/2, A4, and B2/A7), indicating that the groundwater of these aquifers has the same origin, and a common source of pollution.
英文关键词	delta~(15)N-NO_3~- delta~(18)O-NO_3~- nitrate sources pollution meteoric origin aquifer Jordan
类型	Article
语种	英语
国家	中国
收录类别	CSCD
WOS类目	Environmental Sciences & Ecology
CSCD记录号	CSCD:6959617
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/365043
作者单位	Obeidat Mutawakil, Faculty of Science and Arts, Jordan University of Science and Technology, Irbid, 22110, Jordan.; Al-Ajlouni Ahmad, Faculty of Science and Arts, Jordan University of Science and Technology, Irbid, 22110, Jordan.; Awawdeh Muheeb, Laboratory of Applied Geoinformatics, Department of Earth and Environmental Sciences, Yarmouk University, Irbid, 21163, Jordan.; Al-Kharabsheh Noor, Department of Water Resources and Environmental Management, Al-Balqa Applied University, Al-Salt, 19117, Jordan.
推荐引用方式 GB/T 7714	Obeidat Mutawakil,Awawdeh Muheeb,Al-Kharabsheh Noor,et al. Source identification of nitrate in the upper aquifer system of the Wadi Shueib catchment area in Jordan based on stable isotope composition[J],2021,13(4):1674-6767.
APA	Obeidat Mutawakil,Awawdeh Muheeb,Al-Kharabsheh Noor,&Al-Ajlouni Ahmad.(2021).Source identification of nitrate in the upper aquifer system of the Wadi Shueib catchment area in Jordan based on stable isotope composition.干旱区科学,13(4),1674-6767.
MLA	Obeidat Mutawakil,et al."Source identification of nitrate in the upper aquifer system of the Wadi Shueib catchment area in Jordan based on stable isotope composition".干旱区科学 13.4(2021):1674-6767.