Tritium in water electrolytic enrichment and liquid scintillation counting

Plastino, W.; Chereji, I.; Cună, Stela; Kaihola, Lauri; Felice, P. De; Lupsa, N; Balas, Gabriela; Mirel, Valentin; Berdea, Petre; Baciu, Călin

doi:10.1016/j.radmeas.2006.07.010

Cited by 53 publications

(36 citation statements)

References 10 publications

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“…Until 31st May 2009 more than 6500 events with magnitudes greater than 1.0 with depths between 6 and 20 km were recorded in the region of 42. 00-42.75 N and 12.75-13.75 E. Within the framework of the INFN scientific program ERMES (Environmental Radioactivity Monitoring for Earth Sciences), radon Plastino, 2006), radiocarbon and tritium (Plastino et al, 2007) were monitored in groundwater inside the LNGS-INFN, showing different chemical, physical and fluid-dynamic characteristics of groundwater. The U groundwater monitoring was carried out from June 2008 with the aim to better define the radon groundwater transport processes through the overthrust fault Plastino, 2006), as well as to check its contribution to the neutron background at the LNGS-INFN (Plastino et al, 2009).…”

Section: Resultsmentioning

confidence: 99%

Uranium groundwater anomalies and L'Aquila earthquake, 6th April 2009 (Italy)

Plastino

Povinec

Luca

et al. 2010

Journal of Environmental Radioactivity

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Section: Resultsmentioning

confidence: 99%

Uranium groundwater anomalies and L'Aquila earthquake, 6th April 2009 (Italy)

Plastino

Povinec

Luca

et al. 2010

Journal of Environmental Radioactivity

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“…Around 500 mL of the distilled water samples were then subject to the electrolytic enrichment for tritium at 4 o C till around 10 mL was attained [17,18]. The tritium enriched water samples were purified and then mixed with low tritium Ultimagold scintillation cocktail (HP Supplier) in vials of 20 mL capacity to count for the 3 …”

Section: Sample Treatment In the Laboratory And Analytical Proceduresmentioning

confidence: 99%

Genesis and Quality of Groundwater in the Southeastern Region of Southern Vietnam

Vinh¹,

Thai²,

Canh³

et al. 2017

JESE-A

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Abstract:The origin and quality of groundwater in the Southeastern region (belongs to Southern Plain) were identified by using isotopic techniques and geochemical analysis. Groundwater samples were collected from 7 aquifers: the Holocene, upper Pleistocene, middle Pleistocene, lower Pleistocene, upper Pliocene, middle Pliocene and Miocene aquifers. The water isotopic compositions ( 2 H and  18 O) were determined to elucidate the origin and the interaction between surface water and groundwater studies. Transit time (age) of the groundwater samples was determined to explain the direction of groundwater flow. The dating techniques included 3 H and 14 C isotopes measurement, followed by a correction for the initial 14 C-activity by the 13 C-composition ( 13 C) in TDIC (Total Dissolved Inorganic Carbon). Geochemical parameters of the groundwater samples were measured either directly in the field or in the laboratory. The results showed that the groundwater from the Holocene and upper Pleistocene aquifers was most recharged from the local meteorological and hydrological systems, including local precipitation, river and reservoirs. Thus, it has short transit time and its stable isotopic composition is spread around the local meteoric waterline and lines for rivers or reservoirs water. The groundwater in the deeper aquifers: middle and lower Pleistocene, and Neogene aquifers has old age up to 22.5 ka BP. Its water seems to be recharged from the areas with an altitude from 600 to 700 m higher to the Neogene deposit layer altitude. The groundwater in the SE SP (South-Eastern Southern Plain) region has a high quality. The water type is Na-Ca-Mg-HCO 3 with low content of chloride and TDS (Total Dissolved Solids). Calcite/dolomite and gypsum dissolution, organic matter decomposition and sequence of red-ox reactions proceeding through different electron acceptors sediment were controlled the chemistry of the groundwater in the study region.

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“…One TU is defined as 1 tritium atom per 10 18 hydrogen atoms, which in water is equivalent to 0.119 Bq/kg [15]. Mean concentrations in precipitation and surface waters in the northern hemisphere range from 5-10 TU [2]. For most natural water samples analyzed, some level of tritium enrichment, most commonly achieved by electrolysis, is necessary in order to obtain an adequate net count rate.…”

Section: Tritium Measurements For Following Hydrologic Processesmentioning

confidence: 99%

“…One of the most familiar commercially available LSC systems used to date is the Wallac 1220 Quantulus TM system (Perkin Elmer) that employs many of the techniques listed above to achieve a low background rate on the order of 1 count per minute (CPM) in the energy window for tritium [2,3]. A Quantulus system at Pacific Northwest National Laboratory (PNNL) was housed underground as an early assessment of the potential for background reduction that might be afforded by the additional overburden.…”

Section: Introductionmentioning

confidence: 99%

Liquid scintillation counting of environmental radionuclides: a review of the impact of background reduction

Douglas

Bernacki

Erchinger

et al. 2015

J Radioanal Nucl Chem

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Liquid scintillation counting (LSC) supports a range of environmental science measurements. At Pacific Northwest National Laboratory, we are constructing an LSC system with an expected background reduction of 10-100 relative to values reported in the literature. In this paper, a number of current measurement applications of LSC have been considered with an emphasis on determining which aspects of such measurements would gain the greatest benefit: improved minimum detectable activity (MDA), reduction in sample size, and reduction in total analysis time.

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Tritium in water electrolytic enrichment and liquid scintillation counting

Cited by 53 publications

References 10 publications

Uranium groundwater anomalies and L'Aquila earthquake, 6th April 2009 (Italy)

Uranium groundwater anomalies and L'Aquila earthquake, 6th April 2009 (Italy)

Genesis and Quality of Groundwater in the Southeastern Region of Southern Vietnam

Liquid scintillation counting of environmental radionuclides: a review of the impact of background reduction

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