Determination of 210Pb and 210Po in water using the extractive scintillation cocktail Polex™

Landstetter, Claudia; Hiegesberger, Bernd; Sinojmeri, Merita; Katzlberger, Christian

doi:10.1016/j.apradiso.2014.04.014

Cited by 8 publications

(4 citation statements)

References 4 publications

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“…They also observed the coextraction of plutonium, uranium and thorium. With increasing chloride concentrations, the extraction of polonium became dominant (D > 10 4 ) [31]. Monna…”

Section: General Methodsmentioning

confidence: 99%

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Applications of PERALS-Alpha Spectrometry for the Investigation of Radionuclides in Water Samples

Zehringer¹,

Kammerer²,

Pregler³

2021

Materials

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In this paper, experiences of the last 20 years with the PERALS-technique are described. PERALS stands for photo electron-rejecting alpha liquid scintillation. This liquid scintillation technique was developed by Jack McDowell in the 1970s and is a powerful technique for the analyses of many natural alpha nuclides and also the beta nuclide 90Sr. The principle is based on a selective extraction of the radionuclide from the water phase by means of a complexing or ion pair reagent. The extractant contains also a cocktail suitable for scintillation counting. Therefore, the extract can be analyzed directly after the extraction step. After removing quenchers, such as oxygen, and the proper setting of a pulse shape discriminator, alpha pulses can be counted with a photomultiplier. This paper describes the development of robust analysis schemes for the determination of traces of polonium, thorium, uranium and other actinides in water samples (groundwater, rain water, river water, drinking water, mineral water, sea water). For radon and radium, the enrichment in the extract is poor. Therefore, PERALS methods are not suitable for trace analyses of these analytes. In addition, the extraction of the beta-emitter 90Sr with a PERALS cocktail is discussed, even though its beta spectrum is not analyzed with a PERALS counter. Results from the survey of drinking water and mineral water in Switzerland are presented for every radio element.

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“…They also observed the coextraction of plutonium, uranium and thorium. With increasing chloride concentrations, the extraction of polonium became dominant (D > 10 4 ) [31]. Monna…”

Section: General Methodsmentioning

confidence: 99%

“…Monna et al reported overall recoveries for 210 Po in sediment samples of 99.5 ± 6.5% when extracted with POLEX [ 29 ]. Among others, Landstetter et al used POLEX for the analysis of water samples [ 31 , 32 , 33 ].…”

Section: Poloniummentioning

confidence: 99%

Applications of PERALS-Alpha Spectrometry for the Investigation of Radionuclides in Water Samples

Zehringer¹,

Kammerer²,

Pregler³

2021

Materials

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“…(e) Measurement of 210 Po was performed by three main methods including (1) alpha spectrometry; (2) photon electron rejecting liquid alpha spectroscopy (PERALS) (Véronneaua et al, 2000;Landstetter et al, 2014;Case et al, 1982) and (3) Liquid scintillation counter (LSC) (Véronneaua et al, 2000;Matthews et al, 2007). Alpha spectrometry was the most common method for the 210 Po determination in environmental and biological samples using silicon surface barriers or PIPS detectors.…”

Section: Recommended Radiochemical Proceduresmentioning

confidence: 99%

Improvements of 210Po determination method in thermal water samples

Duong

Châu

Trinh

et al. 2021

Vietnam J. Earth Sci.

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Determination of naturally radionuclides have been known well as an important topic in environmental study in recently. One of the most toxic radioisotope in nature, a daughter product of 238U decay chain is 210Po (polonium). The improvement and optimizations methods for determination of this attractive isotope are still presenting so far. In this paper, a new improved method was elaborated for 210Po determination in thermal water sample. In the proposed method, analytical optimization of spontaneous/auto deposition does not use Teflon cup, magnetic stirring or any preparing equipment/item only normal glass and a side of square silver. In addition, the optimization was neglected with absent of purification of polonium (Liquid-liquid extraction methods/Ion exchange chromatography/Extraction chromatographic separations). The outcome of optimal procedure were simplify, less time consuming, great reduction of costs with chemical recovery >80% and could apply for any liquid environmental samples.

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“…Monna et al, report overall recoveries for 210 Po in sediment samples of 93-106% when extracted with POLEX[29]. Amongst others, Landstetter et al used POLEX for the analysis of water samples[32][33][34].When solid samples are analysed it is important to not heat any solution over 200°C. Otherwise, losses of polonium will occur.…”

mentioning

confidence: 99%

Applications of PERALS-Alpha Spectrometry for the Investigation of Radionuclides in Water Samples

Zehringer¹,

Kammerer²,

Pregler³

2021

Preprint

View full text Add to dashboard Cite

In this paper, experiences of the last 20 years with the PERALS-technique are described. PERALS stands for Photo Electron Rejecting Alpha Liquid Scintillation. This LSC-technique was developed by Jack McDowell in the 70ies and is a powerful technique for the analyses of many natural alpha nuclides. The principle is based on a selective extraction of the radionuclide from the water phase by means of a complexing or ion pair reagent. The extractant contains also a suitable cocktail for the scintillation counting. Therefore, the extract can be analysed directly after the extraction step. After removing quenchers, such as oxygen, and the proper setting of a pulse shape discriminator, alpha pulses can be counted with a photomultiplier. The paper describes the development of robust analysis schemes for the determination of traces of polonium, radon, radium, strontium, thorium, uranium and other actinides in water samples (groundwater, rain water, river water, drinking water, mineral water, sea water).

show abstract

Determination of 210Pb and 210Po in water using the extractive scintillation cocktail Polex™

Cited by 8 publications

References 4 publications

Applications of PERALS-Alpha Spectrometry for the Investigation of Radionuclides in Water Samples

Applications of PERALS-Alpha Spectrometry for the Investigation of Radionuclides in Water Samples

Improvements of 210Po determination method in thermal water samples

Applications of PERALS-Alpha Spectrometry for the Investigation of Radionuclides in Water Samples

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