文章基本信息

标题：TRACING SOURCES OF POLLUTION IN GROUNDWATER USING HYDROCHEMICAL AND ISOTOPIC METHODS: BEIRUT AND ITS SUBURBS
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作者：V�ronique Kazpard ; Zeinab Saad ; Antoine El Samrani 等
期刊名称：Journal of Environmental Hydrology (ältere Jahrgänge)
印刷版ISSN：1058-3912
电子版ISSN：1996-7918
出版年度：2008
卷号：16
出版社：IAEH
摘要：Analyses of hydrochemical and stable isotopes of deuterium and oxygen-18 were conducted on groundwater samples that tap into a limestone aquifer in Beirut city and its suburbs. The analyses document the chemical and isotopic characteristics of the natural groundwater and establish its origin. Hydrochemical data are classified on the basis of dominant anions. Mineral groundwater quality was found to be affected by different pollution sources in the southern suburb of Beirut. Isotopic analyses delineate two major groundwater groupings. The first is influenced by direct recharge into the aquifer from precipitation. The second, showing elevated mineral characteristics, is influenced by a secondary evaporation process that results in isotopic enrichment of groundwater. Investigation of the isotopically enriched d15N samples shows the origin of nitrate pollution to be from infiltration of either animal waste or septic systems to groundwater.