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Sci Total Environ


Title:Impact of geochemical stressors on shallow groundwater quality
Author(s):An YJ; Kampbell DH; Jeong SW; Jewell KP; Masoner JR;
Address:"Department of Environmental Science, Konkuk University, Gwangjin-gu, Seoul, Korea. anyjoo@konkuk.ac.kr"
Journal Title:Sci Total Environ
Year:2005
Volume:20050323
Issue:1-Mar
Page Number:257 - 266
DOI: 10.1016/j.scitotenv.2004.12.072
ISSN/ISBN:0048-9697 (Print) 0048-9697 (Linking)
Abstract:"Groundwater monitoring wells (about 70 wells) were extensively installed in 28 sites surrounding Lake Texoma, located on the border of Oklahoma and Texas, to assess the impact of geochemical stressors to shallow groundwater quality. The monitoring wells were classified into three groups (residential area, agricultural area, and oil field area) depending on their land uses. During a 2-year period from 1999 to 2001 the monitoring wells were sampled every 3 months on a seasonal basis. Water quality assay consisted of 25 parameters including field parameters, nutrients, major ions, and trace elements. Occurrence and level of inorganics in groundwater samples were related to the land use and temporal change. Groundwater of the agricultural area showed lower levels of ferrous iron and nitrate than the residential area. The summer season data revealed more distinct differences in inorganic profiles of the two land use groundwater samples. There is a possible trend that nitrate concentrations in groundwater increased as the proportions of cultivated area increased. Water-soluble ferrous iron occurred primarily in water samples with a low dissolved oxygen concentration and/or a negative redox potential. The presence of brine waste in shallow groundwater was detected by chloride and conductivity in oil field area. Dissolved trace metals and volatile organic carbons were not in a form of concentration to be stressors. This study showed that the quality of shallow ground water could be related to regional geochemical stressors surrounding the lake"
Keywords:"Agriculture Environmental Monitoring Ferrous Compounds/analysis Fresh Water/*analysis Geological Phenomena Geology Metals/analysis Nitrates/analysis Oklahoma Organic Chemicals/analysis Petroleum Texas Waste Disposal, Fluid Water Pollutants, Chemical/*anal;"
Notes:"MedlineAn, Youn-Joo Kampbell, Donald H Jeong, Seung-Woo Jewell, Ken P Masoner, Jason R eng Research Support, Non-U.S. Gov't Netherlands 2005/09/16 Sci Total Environ. 2005 Sep 15; 348(1-3):257-66. doi: 10.1016/j.scitotenv.2004.12.072. Epub 2005 Mar 23"

 
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