TY - JOUR
T1 - Optimisation of liquid scintillation counting conditions for rapid tritium determination in aqueous samples
AU - Pujol, Ll
AU - Sanchez-Cabeza, J. A.
PY - 1999/1/1
Y1 - 1999/1/1
N2 - Several studies were carried out to optimise rapid tritium analysis in fresh waters by ultra-low background liquid scintillation. These included the optimisation of (i) sample/scintillant ratio, (2) pulse shape analysis, and (3) pulse-amplitude comparator, and studies concerning (1) the combination scintillant/vial and (2) the effect of chemiluminescence. The proposed method involves the mixing of 8 ml sample with 12 ml scintillation cocktail Ultima Gold AB in Zinsser low diffusion vials. These are stored during one day before counting in order to reduce chemiluminescence. The minimum detectable activity achieved was 2.2 Bq·l-1 for a total counting time of 360 minutes. In order to test the method, tritium was determined in Ebro river samples.
AB - Several studies were carried out to optimise rapid tritium analysis in fresh waters by ultra-low background liquid scintillation. These included the optimisation of (i) sample/scintillant ratio, (2) pulse shape analysis, and (3) pulse-amplitude comparator, and studies concerning (1) the combination scintillant/vial and (2) the effect of chemiluminescence. The proposed method involves the mixing of 8 ml sample with 12 ml scintillation cocktail Ultima Gold AB in Zinsser low diffusion vials. These are stored during one day before counting in order to reduce chemiluminescence. The minimum detectable activity achieved was 2.2 Bq·l-1 for a total counting time of 360 minutes. In order to test the method, tritium was determined in Ebro river samples.
U2 - 10.1007/BF02345568
DO - 10.1007/BF02345568
M3 - Article
SN - 0236-5731
VL - 242
SP - 391
EP - 398
JO - Journal of Radioanalytical and Nuclear Chemistry
JF - Journal of Radioanalytical and Nuclear Chemistry
IS - 2
ER -