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Bailey, R.T. |
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Title |
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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Zhao, Q.; Su, X.; Kang, B.; Zhang, Y.; Wu, X.; Liu, M. |
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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 |
Abbreviated Journal |
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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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Lucia, M.D.; Kempka, T.; Jatnieks, J.; Kuhn, M. |
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Title |
Integrating surrogate models into subsurface simulation framework allows computation of complex reactive transport scenarios |
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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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Al-Omran, A.M.; Aly, A.A.; Al-Wabel, M.I.; Al-Shayaa, M.S.; Sallam, A.S.; Nadeem, M.E. |
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Geostatistical methods in evaluating spatial variability of groundwater quality in Al-Kharj Region, Saudi Arabia |
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2017 |
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Appl. Water Sci. |
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7 |
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4013-4023 |
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CUT @ phaedon.kyriakidis @ Al-Omran2017 |
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118 |
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Elumalai*, V.; Brindha, K.; Sithole, B.; Lakshmanan, E. |
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Spatial interpolation methods and geostatistics for mapping groundwater contamination in a coastal area |
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2017 |
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Environ. Sci. Pollut. Res. |
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24(3) |
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11601-11617 |
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CUT @ phaedon.kyriakidis @ Elumalai2017 |
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125 |
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