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Bailey, R.T. |
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Selenium contamination, fate, and reactive transport in groundwater in relation to human health |
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2017 |
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Hydrogeology Journal |
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25 |
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4 |
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1191-1217 |
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THL @ luqianxue.zhang @ bailey2017selenium |
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77 |
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Hammami Abidi, J.; Farhat, B.; Ben Mammou, A.; Oueslati, N. |
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Title |
Characterization of Recharge Mechanisms and Sources of Groundwater Salinization in Ras Jbel Coastal Aquifer (Northeast Tunisia) Using Hydrogeochemical Tools, Environmental Isotopes, GIS, and Statistics |
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Journal Article |
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Year |
2017 |
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Journal of Chemistry |
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2017 |
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8610894 |
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Groundwater is among the most available water resources in Tunisia; it is a vital natural resource in arid and semiarid regions. Located in north-eastern Tunisia, the Metline-Ras Jbel-Raf Raf aquifer is a mio-plio-quaternary shallow coastal aquifer, where groundwater is the most important source of water supply. The major ion hydrochemistry and environmental isotope composition δ18O, δ2H were investigated to identify the recharge sources and processes that affect the groundwater salinization. The combination of hydrogeochemical, isotopic, statistical, and GIS approaches demonstrates that the salinity and the groundwater composition are largely controlled by the water-rock interaction particularly the dissolution of evaporate minerals and the ion exchange process, the return flow of the irrigation water, agricultural fertilizers, and finally saltwater intrusion which started before 1980 and which is partially mitigated by the artificial recharge since 1993. As for the stable isotope signatures, results showed that groundwater samples lay on and around the local meteoric water line LMWL; hence, this arrangement signifies that the recharge of the Ras Jbel aquifer is ensured by recent recharge from Mediterranean air masses. |
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Hindawi KW |
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2090-9063 |
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THL @ christoph.kuells @ |
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189 |
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Zhao, Q.; Su, X.; Kang, B.; Zhang, Y.; Wu, X.; Liu, M. |
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Title |
A hydrogeochemistry and multi-isotope (Sr, O, H, and C) study of groundwater salinity origin and hydrogeochemcial processes in the shallow confined aquifer of northern Yangtze River downstream coastal plain, China |
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Journal Article |
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Year |
2017 |
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Applied Geochemistry |
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86 |
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49-58 |
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Coastal confined groundwater, Salinity, Hydrogeochemcial processes, Multiple environmental tracers |
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Economically developed coastal areas have a high water demand, and their groundwater resources can be threatened by salinization. Many methods and tracers have been used to discriminate the source of salinization because a single method does not yield reliable results. In this paper, the shallow confined coastal plain aquifer, north of the downstream Yangtze River in China, is used as a case study to investigate the origin of the salinity and the relevant geochemical processes for this aquifer. Multiple environmental tracers of major ions, minor ions (Br−, I−), and isotopes (18O, 2H, 13C, 87Sr, 3H, 14C) were used so as to provide reliable conclusions. The TDS distribution of the aquifer has an increasing trend, from below 500 mg/L in the inland areas to more than 20,000 mg/L around the southeast coastline. The water chemical type evolves from HCO3-Ca to Cl-Na as the TDS increases. The results suggest that the groundwater salinity is influenced by seawater intrusion. The seawater proportions in the groundwater samples range from 0.07% to 94.41% and show the same spatial distribution pattern as TDS. The 3H and 14C values show that the highest salinity was mainly caused by a seawater transgression around 6000a B.P. The aquifer is also affected by other hydrogeochemical processes: base exchange has enriched Ca2+ and depleted K+ and Na+, sulfate reduction has reduced the concentration of SO42− and enriched HCO3−, and iodine-rich organic matter decomposition has enriched the concentration of I−. The iodine enrichment also suggests paleo-seawater intrusion. In addition, the precipitation of carbonate minerals has decreased the concentration of Ca2+, Mg2+, and HCO3−, albeit to a limited extent. |
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0883-2927 |
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THL @ christoph.kuells @ Zhao201749 |
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182 |
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Bazrafshan, O.; Moradi, M.; Farokhzadeh, B. |
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Evaluation of interpolation techniques for the salinity of groundwater in wet and dry seasons (Case Study: Minab Plain, South Coast of Iran) |
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2017 |
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J. Hydrosci. Env. |
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1(2) |
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62-69 |
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CUT @ phaedon.kyriakidis @ Bazrafshan2017 |
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155 |
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Lucia, M.D.; Kempka, T.; Jatnieks, J.; Kuhn, M. |
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Integrating surrogate models into subsurface simulation framework allows computation of complex reactive transport scenarios |
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Journal Article |
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2017 |
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Energy Procedia |
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125 |
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580-587 |
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CUT @ phaedon.kyriakidis @ lucia2017 |
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112 |
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