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Vertical mixing with return irrigation water the cause of arsenic enrichment in groundwater of district Larkana Sindh, Pakistan
Waqar Ali;  Nisbah Mushtaq;  Tariq Javed;  Hua Zhang;  Kamran Ali;  Atta Rasool;  Abida Farooqi
2019
发表期刊Environmental Pollution
卷号245页码:77-88
摘要

Stable isotopes ratios (‰) of Hydrogen (δ2H) and Oxygen (δ1⁸O) were used to trace the groundwater recharge mechanism and geochemistry of arsenic (As) contamination in groundwater from four selected sites (Larkana, Naudero, Ghari Khuda Buksh and Dokri) of Larkana district. The stable isotope values of δ2H and δ1⁸O range from 70.78‰ to −56.01‰ and from −10.92‰ to −7.35‰, relative to Vienna Standard for Mean Ocean Water (VSMOW) respectively, in all groundwater samples, thus indicating the recharge source of groundwater from high-salinity older water. The concentrations of As in all groundwater samples were ranged from 2 μg/L to 318 μg/L, with 67% of samples exhibited As levels exceeding than that of World Health Organization (WHO) permissible limit 10 μg/L and 42% of samples expressed the As level exceeding than that of the National Environmental Quality Standard (NEQS) 50 μg/L. The leaching and vertical mixing with return irrigation water are probably the main processes controlling the enrichment of As in groundwater of Larkana, Naudero, Ghari Khuda Buksh and Dokri. The weathering of minerals mostly controlled the overall groundwater chemistryrock-water interactions and silicate weathering generated yielded solutions that were saturated in calcite and dolomite in two areas while halite dissolution is prominent with high As area.

关键词Arsenic isotopes saturation Indices vertical Mixing return Irrigation
收录类别SCI
语种英语
文献类型期刊论文
条目标识符http://ir.gyig.ac.cn/handle/42920512-1/10255
专题环境地球化学国家重点实验室
作者单位1.Hydro Geochemistry Laboratory, Department of Environmental Sciences, Faculty of Biological Sciences, Quaid-I-Azam University, Islamabad, PO, 45320, Pakistan
2.State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, 550081, China
3.University of Chinese Academy of Sciences, Beijing, 100049, China
4.Institute of Environmental Sciences and Engineering (IESE), School of Civil and Environmental Engineering (SCEE), National University of Science and Technology (NUST) Islamabad, Pakistan
5.Isotope Application Division, Pakistan Institute of Nuclear Science and Technology (PINSTECH), Nilore, Islamabad, Pakistan
推荐引用方式
GB/T 7714
Waqar Ali;Nisbah Mushtaq;Tariq Javed;Hua Zhang;Kamran Ali;Atta Rasool;Abida Farooqi. Vertical mixing with return irrigation water the cause of arsenic enrichment in groundwater of district Larkana Sindh, Pakistan[J]. Environmental Pollution,2019,245:77-88.
APA Waqar Ali;Nisbah Mushtaq;Tariq Javed;Hua Zhang;Kamran Ali;Atta Rasool;Abida Farooqi.(2019).Vertical mixing with return irrigation water the cause of arsenic enrichment in groundwater of district Larkana Sindh, Pakistan.Environmental Pollution,245,77-88.
MLA Waqar Ali;Nisbah Mushtaq;Tariq Javed;Hua Zhang;Kamran Ali;Atta Rasool;Abida Farooqi."Vertical mixing with return irrigation water the cause of arsenic enrichment in groundwater of district Larkana Sindh, Pakistan".Environmental Pollution 245(2019):77-88.
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