Analysis of triple-label samples by liquid scintillation spectrometry.
The simultaneous analysis of three radionuclides present in a sample is demonstrated. The approach requires fitting a series of counting data acquired over a period of time to a triple exponential mathematical expression. The use and advantages of the method are illustrated for the case of the standardisation of 32P in the presence of 33P and 35S by 4pi-beta liquid scintillation spectrometry. The effects of sample preparation, chemical quenching and different activity ratios were studied.
Altzitzoglou
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European Commission, DG Joint Research Centre, Institute for Reference Materials and Measurements, Retieseweg, Geel B-2440, Belgium. timotheos.altzitzoglou@cec.eu.int
D000465:Algorithms; D045424:Complex Mixtures / Q000032:analysis* / Q000592:standards; D018499:Linear Energy Transfer; D008956:Models, Chemical; D015233:Models, Statistical; D010761:Phosphorus Radioisotopes / Q000032:analysis* / Q000592:standards; D011874:Radiometry / Q000379:methods; D015203:Reproducibility of Results; D012588:Scintillation Counting / Q000379:methods* / Q000592:standards; D012680:Sensitivity and Specificity; D012996:Solutions; D013462:Sulfur Radioisotopes / Q000032:analysis* / Q000592:standards
D045424:Complex Mixtures; D010761:Phosphorus Radioisotopes; D012996:Solutions; D013462:Sulfur Radioisotopes