Search Results - "Busenberg, E"
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Dating young groundwater with sulfur hexafluoride: Natural and anthropogenic sources of sulfur hexafluoride
Published in Water resources research (01-10-2000)“…Sulfur hexafluoride (SF6) is primarily of anthropogenic origin but also occurs naturally. The troposphere concentration of SF6 has increased from a steady…”
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2
Transport and degradation of chlorofluorocarbons (CFCs) in the pyritic Rabis Creek aquifer, Denmark
Published in Water resources research (01-10-2007)“…Vertical profiles of the chlorofluorocarbons CFC‐11, CFC‐12, and CFC‐113 penetrating aerobic and anaerobic parts of a shallow sandy aquifer show that the CFC…”
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3
Groundwater residence times in Shenandoah National Park, Blue Ridge Mountains, Virginia, USA: a multi-tracer approach
Published in Chemical geology (01-09-2001)“…Chemical and isotopic properties of water discharging from springs and wells in Shenandoah National Park (SNP), near the crest of the Blue Ridge Mountains, VA,…”
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4
Evidence of CFC degradation in groundwater under pyrite-oxidizing conditions
Published in Journal of hydrology (Amsterdam) (15-12-2007)“…A detailed local-scale monitoring network was used to assess CFC distribution in an unconfined sand aquifer in southwestern Ontario where the zone of…”
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5
Age of Irrigation Water in Ground Water from the Eastern Snake River Plain Aquifer, South-Central Idaho
Published in Ground water (01-03-2000)“…Stable isotope data (2H and 18O) were used in conjunction with chlorofluorocarbon (CFC) and tritium/helium‐3 (3H/3He) data to determine the fraction and age of…”
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6
Ground water age and nitrate distribution within a glacial aquifer beneath a thick unsaturated zone
Published in Ground water (01-01-1998)“…The impact on ground water quality from increasing fertilizer application rates over the past 40 years is evaluated within a glacial aquifer system beneath a…”
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Flow of river water into a karstic limestone aquifer—2. Dating the young fraction in groundwater mixtures in the Upper Floridan aquifer near Valdosta, Georgia
Published in Applied geochemistry (01-11-1998)“…Tritium/helium-3 ( 3H/ 3He) and chlorofluorocarbon (CFCs, CFC–11, CFC–12, CFC–113) data are used to date the young fraction in groundwater mixtures from a…”
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Flow of river water into a Karstic limestone aquifer. 1. Tracing the young fraction in groundwater mixtures in the Upper Floridan Aquifer near Valdosta, Georgia
Published in Applied geochemistry (01-11-1998)“…The quality of water in the Upper Floridan aquifer near Valdosta, Georgia is affected locally by discharge of Withlacoochee River water through sinkholes in…”
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9
Groundwater Record of Halocarbon Transport by the Danube River
Published in Environmental science & technology (01-11-1997)“…Groundwater dating studies have supported the concept that aquifers with low coefficients of dispersion may contain coherent records of past conditions in…”
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10
Dating groundwater with trifluoromethyl sulfurpentafluoride (SF5CF3), sulfur hexafluoride (SF6), CF3Cl (CFC-13), and CF2Cl2 (CFC-12)
Published in Water resources research (22-02-2008)“…A new groundwater dating procedure using the transient atmospheric signal of the environmental tracers SF5CF3, CFC‐13, SF6, and CFC‐12 was developed. The…”
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11
Evidence for terrigenic SF6 in groundwater from basaltic aquifers, Jeju Island, Korea: Implications for groundwater dating
Published in Journal of hydrology (Amsterdam) (10-06-2007)“…Measurements of the concentrations of dichlorodifluoromethane (CFC-12), tritium (3H), and sulfur hexafluoride (SF6) in groundwater from basaltic aquifers in…”
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12
Application of environmental tracers to mixing, evolution, and nitrate contamination of ground water in Jeju Island, Korea
Published in Journal of hydrology (Amsterdam) (30-07-2006)“…Tritium/helium-3 ( 3H/ 3He) and chlorofluorocarbons (CFCs) were investigated as environmental tracers in ground water from Jeju Island (Republic of Korea), a…”
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13
Evidence for terrigenic SF sub(6) in groundwater from basaltic aquifers, Jeju Island, Korea: Implications for groundwater dating
Published in Journal of hydrology (Amsterdam) (10-06-2007)“…Measurements of the concentrations of dichlorodifluoromethane (CFC-12), tritium ( super(3)H), and sulfur hexafluoride (SF sub(6)) in groundwater from basaltic…”
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14
Hydrochemical tracers in the middle Rio Grande Basin, USA: 1. Conceptualization of groundwater flow
Published in Hydrogeology journal (01-08-2004)“…Chemical and isotopic data for groundwater from throughout the Middle Rio Grande Basin, central New Mexico, USA, were used to identify and map groundwater flow…”
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15
The Geochemical Evolution of Riparian Ground Water in a Forested Piedmont Catchment
Published in Ground water (01-12-2003)“…The principal weathering reactions and their rates in riparian ground water were determined at the Panola Mountain Research Watershed (PMRW) near Atlanta,…”
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Low-Level Detections of Halogenated Volatile Organic Compounds in Groundwater: Use in Vulnerability Assessments
Published in Journal of hydrologic engineering (01-11-2008)“…Concentrations of halogenated volatile organic compounds (VOCs) were determined by gas chromatography (GC) with an electron-capture detector (GC-ECD) and by…”
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Determination of the Cation Exchange Capacity of Clays and Soils Using an Ammonia Electrode
Published in Clays and clay minerals (01-08-1973)“…Abstract The ammonia electrode serves as the basis of a simple, accurate method for determination of cation exchange capacity of small ( ca. 50 mg) samples of…”
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Historical trends in occurrence and atmospheric inputs of halogenated volatile organic compounds in untreated ground water used as a source of drinking water
Published in The Science of the total environment (05-04-2004)“…Analyses of samples of untreated ground water from 413 community-, non-community- (such as restaurants), and domestic-supply wells throughout the US were used…”
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Influence of Fracture Anisotropy on Ground Water Ages and Chemistry, Valley and Ridge Province, Pennsylvania
Published in Ground water (01-05-2002)“…Model ground water ages based on chlorofluorocarbons (CFCs) and tritium/helium‐3 (3H/3He) data were obtained from two arrays of nested piezometers located on…”
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Affirmative Action's Testament of Hope: Strategies for a New Era in Higher Education
Published 1997“…This book of 10 papers presents a collaborative effort of professionals in several disciplines to analyze the impact of affirmative action in higher education…”
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