Assessment of Tritium Activity in Groundwater at the Nuclear Objects Sites in Lithuania

Cidzikienė, Vigilija; Jakimavičiūtė-Maselienė, Vaidotė; Girgždienė, Raselė; Mažeika, Jonas; Petrošius, Rimantas

doi:10.1155/2014/201623

Cited by 2 publications

(3 citation statements)

References 13 publications

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“…In this framework, a review of tritium content and variability in groundwater would certainly be more relevant. However, few examples reporting tritium levels in groundwater are found, also cited in this review [63,64,[66][67][68][69][70][71][72][73][74][75][76].…”

Section: Tritium Activity Anomalies: Overview Of the Taam Methodsmentioning

confidence: 99%

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Tritium as a Tracer of Leachate Contamination in Groundwater: A Brief Review of Tritium Anomalies Method

2022

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Environmental isotopes are essential in hydrogeological studies, thanks to their contribution to the understanding of aquifers dynamics, vulnerability, water resources assessment, and management issues. The environmental isotopic approach plays a vital role in tracing the hydrological cycle and identifying various sources of contamination in the environment and gives independent information concerning what can be determined by a traditional hydrogeological study. Even in the framework of COP-26, isotopes have been indicated as fingerprints of climate change and therefore suitable for the evaluation of water balance and assessment of processes involved therein; in pollution studies they are used as fundamental support of traditional geochemical measures. Tritium, in particular, has been used since the 1960s to identify potential leaks in the containment walls of waste disposal sites, since its presence in the leachate (at very high levels in some cases) depends on the incorrect waste disposal of some peculiar items. Its use as a tracer of pollution by landfills is highlighted and emphasized by the very low concentrations of tritium in the natural environment. By comparing tritium content of leachate to that of water downflow from the waste disposal site, it is therefore possible to establish with a good success rate whether leachate have migrated or not out of the landfill, in the surrounding environment. An additional potential of tritium is to give a prompt indication of pollution risk in the environment indicating leaching even before the chemical indicator of pollution can be detected. This article wants to provide a contribution to the scientific community, collecting all the existing research in this field and providing data and benchmarks about this method, in particular stressing the role of tritium as an indicator of leachate transfer out of waste disposal sites.

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Section: Tritium Activity Anomalies: Overview Of the Taam Methodsmentioning

confidence: 99%

“…Hydrology 2022, 9,75 8 of 20 over the base level), and afterwards to compare measurements in wells, piezometers, rivers, and channels with the background level. An example is given in Figure3, in which background level of tritium has been evaluated for an area of central Italy where almost monthly measured data have lasted for over two decades.…”

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confidence: 99%

Tritium as a Tracer of Leachate Contamination in Groundwater: A Brief Review of Tritium Anomalies Method

2022

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“…One liter water of concentration of 1 TU is equivalent to 0.12 Bq in radioactivity. Other characteristics of this tracer are [14][15]: half-life is 12. 32 years; average and maximum energies are 5.7 and 18.6 keV, respectively; specific activity in T 2 O is 2700 Ci/g; annual limit intake (ALI) is 80 mCi; maximum permissible concentration 1 x 10 -3 µCi/ml.…”

Section: Tracer Usedmentioning

confidence: 99%

Assessment of Average Tracer Concentration Approach for Flow Rate Measurement and Field Calibration

2016

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:Tracer method Flow rate Open channel flow Tritium Rhodamine WT Tracer method is one of the methods available for open channel flow rate measurements such as in irrigation canals. Average tracer concentration approach is an instantaneous injection method that based on the average tracer concentrations value at the sampling point. If the procedures are correct and scientific considerations are justified, tracer method will give relatively high accuracy of measurements. The accuracy of the average tracer concentration approach has been assessed both in laboratory and field. The results of accuracy tests of open channel flow that has been conducted at the Center for Application Isotopes and Radiation Laboratory-BATAN showed that the accuracy level of average concentrations approach method was higher than 90% compared to the true value (volumetric flow rate). The accuracy of average tracer concentration approach was also assessed during the application of the method to measure flow rate of Mrican irrigation canals as an effort to perform field calibration of existing weirs. Both average tracer concentration approach and weirs can predict the trend of the flow correctly. However, it was observed that flow discrepancies between weirs measurement and average tracer concentration approach predictions were as high as 27%. The discrepancies might be due to the downgrading performances of the weirs because of previous floods and high sediment contents of the flow.

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Assessment of Tritium Activity in Groundwater at the Nuclear Objects Sites in Lithuania

Cited by 2 publications

References 13 publications

Tritium as a Tracer of Leachate Contamination in Groundwater: A Brief Review of Tritium Anomalies Method

Tritium as a Tracer of Leachate Contamination in Groundwater: A Brief Review of Tritium Anomalies Method

Assessment of Average Tracer Concentration Approach for Flow Rate Measurement and Field Calibration

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