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Author Edmunds, W.M.
Title Bromine geochemistry of british groundwaters Type Journal Article
Year 1996 Publication Mineralogical Magazine Abbreviated Journal
Volume 60 Issue (down) 399 Pages 275-284
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Abstract \textlessp\textgreater The concentrations of Br in potable groundwaters in the United Kingdom range from 60 to 340 µg 1 \textlesssup\textgreater-1\textless/sup\textgreater . The occurrence of Br is described in terms of the Br/Cl weight ratio which enables small changes in bromide concentrations to be assessed in terms of salinity. Median values of Br/Cl in groundwaters range from 2.60 to 5.15 × 10 \textlesssup\textgreater−3\textless/sup\textgreater compared with a sea water ratio of 3.47× 10 \textlesssup\textgreater−3\textless/sup\textgreater . In recent shallow groundwaters the Br/Cl ratio is rather variable in response to a range of natural and anthropogenic inputs (marine and industrial aerosols, industrial and agricultural chemicals including road salt). Some slight enrichment in Br/Cl also occurs naturally during infiltration as a result of biogeochemical processes. \textless/p\textgreater
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ISSN 0026-461x ISBN Medium
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Notes Approved no
Call Number THL @ christoph.kuells @ Edmunds1996 Serial 20
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Author Wen, H.; Carignan, J.
Title Reviews on atmospheric selenium: emissions, speciation and fate Type Journal Article
Year 2007 Publication Atmospheric environment Abbreviated Journal
Volume 41 Issue (down) 34 Pages 7151-7165
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Publisher Elsevier Place of Publication Editor
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Notes Approved no
Call Number THL @ luqianxue.zhang @ wen2007reviews Serial 97
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Author Guerzoni, S.; Molinaroli, E.; Chester, R.
Title Saharan dust inputs to the W. Mediterranean Sea: depositional patterns, geochemistry and sedimentological implications Type Journal Article
Year 1997 Publication Deep-Sea Res Abbreviated Journal
Volume 44 Issue (down) 3-4 Pages 631-654
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Call Number THL @ luqianxue.zhang @ Guerzoni1997 Serial 61
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Author Bouchaou, L.; Michelot, J.L.; Vengosh, A.; Hsissou, Y.; Qurtobi, M.; Gaye, C.B.; Bullen, T.D.; Zuppi, G.M.
Title Application of multiple isotopic and geochemical tracers for investigation of recharge, salinization, and residence time of water in the Souss–Massa aquifer, southwest of Morocco Type Journal Article
Year 2008 Publication Journal of Hydrology Abbreviated Journal
Volume 352 Issue (down) 3 Pages 267-287
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Abstract Groundwater and surface water in Souss–Massa basin in the west-southern part of Morocco is characterized by a large variation in salinity, up to levels of 37gL−1. The high salinity coupled with groundwater level decline pose serious problems for current irrigation and domestic water supplies as well as future exploitation. A combined hydrogeologic and isotopic investigation using several chemical and isotopic tracers such as Br/Cl, δ18O, δ2H, 3H, 87Sr/86Sr, δ11B, and 14C was carried out in order to determine the sources of water recharge to the aquifer, the origin of salinity, and the residence time of water. Stable isotope, 3H and 14C data indicate that the high Atlas mountains in the northern margin of the Souss–Massa basin with high rainfall and low δ18O and δ2H values (−6 to −8‰ and −36 to −50‰) is currently constitute the major source of recharge to the Souss–Massa shallow aquifer, particularly along the eastern part of the basin. Localized stable isotope enrichments offset meteoric isotopic signature and are associated with high nitrate concentrations, which infer water recycling via water agricultural return flows. The 3H and 14C data suggest that the residence time of water in the western part of the basin is in the order of several thousands of years; hence old water is mined, particularly in the coastal areas. The multiple isotope analyses and chemical tracing of groundwater from the basin reveal that seawater intrusion is just one of multiple salinity sources that affect the quality of groundwater in the Souss–Massa aquifer. We differentiate between modern seawater intrusion, salinization by remnants of seawater entrapped in the middle Souss plains, recharge of nitrate-rich agricultural return flow, and dissolution of evaporate rocks (gypsum and halite minerals) along the outcrops of the high Atlas mountains. The data generated in this study provide the framework for a comprehensive management plan in which water exploitation should shift toward the eastern part of the basin where current recharge occurs with young and high quality groundwater. In contrast, we argued that the heavily exploited aquifer along the coastal areas is more vulnerable given the relatively longer residence time of the water and salinization processes in this part of the aquifer.
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ISSN 0022-1694 ISBN Medium
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Notes Approved no
Call Number THL @ christoph.kuells @ Bouchaou2008 Serial 17
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Author Gat, J.R.
Title The relationship between surface and subsurface waters: water quality aspects in areas of low precipitation / Rapport entre les eaux de surface et les eaux souterraines: aspects des propriétés caractéristiques de l’eau dans les zones à précipitation faible Type Journal Article
Year 1980 Publication Hydrological Sciences Bulletin Abbreviated Journal
Volume 25 Issue (down) 3 Pages 257-267
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Abstract In the temperate and semiarid environment the salinity of both surface and subsurface(meteoric) waters is dominated by the weathering products of soil and aquifer minerals, since even surface waters have a history of subsurface flow. In the desert environment, in contrast, surface flows are more superficial and their chemistry dominated by the aeolian salinity. This has both a marine input and

a contribution from recycled salinity from surface accumulation of evaporitic minerals. Both these sources have chloride (and to a lesser extent sulphate) as the dominant anion.
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ISSN 0303-6936 ISBN Medium
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Notes Approved no
Call Number THL @ christoph.kuells @ Gat1980 Serial 22
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