natural radionuclides, liquid matrices

Parameter Methode Nachweisgrenze
3H LSC after distillation 3 Bq l-1
3H LSC after electrolytic enrichment 0,1 Bq l-1
238U, 230Th, 226Ra, 210Pb, 228Ra, 224Ra, 40K γ-ray spectrometry 0,01 Bq l-1
226Ra, 228Ra, 210Pb γ-ray spectrometry after sulfate precipitation 0,001 Bq l-1
210Pb PC after spontaneous deposition 0,01 Bq l-1
210Po α-particle spectrometry after spontaneous deposition 0,001 Bq l-1
222Rn LSC direct 3 Bq l-1
232Th, Th ICP-MS and α-particle spectrometry after radiochemical separation 0,001 Bq l-1
227Ac α-particle spectrometry after radiochemical separation 0,005 Bq l-1
232Th, 228Th, 227Th α-particle spectrometry after radiochemical separation 0,005 Bq l-1
234U, 235U, 238U, U ICP-MS and α-particle spectrometry after radiochemical separation 0,001 Bq l-1

ICP-MS – Mass Spectrometry with Inductively Coupled Plasma
LSC – Liquid Scintillation Counting
PC – Proportional Counting