Source identification of nitrate in the upper aquifer system of the Wadi Shueib catchment area in Jordan based on stable isotope composition

作     者：Mutawakil OBEIDAT Muheeb AWAWDEH Noor AL-KHARABSHEH Ahmad AL-AJLOUNI Mutawakil OBEIDAT;Muheeb AWAWDEH;Noor AL-KHARABSHEH;Ahmad AL-AJLOUNI

作者机构：Faculty of Science and ArtsJordan University of Science and TechnologyIrbid 22110Jordan Laboratory of Applied GeoinformaticsDepartment of Earth and Environmental SciencesYarmouk UniversityIrbid 21163Jordan Department of Water Resources and Environmental ManagementAl-Balqa Applied UniversityAl-Salt 19117Jordan 

出 版 物：《Journal of Arid Land》 (干旱区科学（英文版）)

年 卷 期：2021年第13卷第4期

页      面：350-374页

核心收录：

学科分类：08[工学] 0815[工学-水利工程] 

基　　金：funded by the by the Deanship of Scientific Research Jordan University of Science and Technology(20170338) 

主　　题：δ^(15)N-NO_(3)– δ^(18)O-NO_(3)– nitrate sources pollution meteoric origin aquifer Jordan 

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 *** contamination of groundwater is a global water quality problem,as it entails threat to human health as well as aquatic *** identification of contamination is the cornerstone and a prerequisite for any effective management program of water *** isotope composition of the dissolved nitrate(δ^(15)N-NO_(3)-andδ^(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,***,the stable isotope compositions of the groundwater(δ^(2)H-H_(2)O andδ^(18)O-H_(2)O)in conjunction with the groundwater hydrochemistry were integrated to investigate the origin and evolution of the *** revealed that groundwater in the study area is fresh and hard-very hard water,and mainly a Ca-Mg-Cl ***_(3)-concentration was in the range of 7.0-74.0 mg/L with an average of 37.0 mg/*** of the samples showed concentration higher than the natural background concentration of NO_(3)-(5.0-10.0 mg/L).Theδ^(2)H-H_(2)O andδ^(18)O-H_(2)O values indicated that the groundwater is meteoric,and of Mediterranean origin,with a strong evaporation ***δ^(15)N-NO_(3)-values ranged between 6.0‰and 11.3‰with an average of 8.7‰,and theδ^(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 *** and denitrification are the main transformation processes affecting nitrogen *** analysis revealed no significant differences in theδ^(2)H-H_(2)O andδ^(18)OH_(2)O values,andδ^(15)N-NO_(3)-andδ^(18)O-NO_(3)-values for the three aquifers(A1/2,A4,and B2/A7),indicating that the groundwater of