@article{oai:repo.qst.go.jp:00073402,
 author = {Kavasi, Norbert and Kumar Sahoo, Sarata and Kavasi, Norbert and Sahoo, Sarata},
 issue = {4},
 journal = {Analytical Chemistry},
 month = {Jan},
 note = {In this work, a new 90Sr analysis method was developed using the Isotopx Ltd., Phoenix X62 thermal ionization mass spectrometer (TIMS). Excellent ion beam sensitivity was demonstrated with the detection of 1 mBq (0.2 fg) 90Sr on a Daly ion-counting system. The abundance sensitivity for the 90Sr/88Sr ratio was 2.1×10 10 and this could ensure measurement of 100 Bq·kg 1 (19 fg·g 1) 90Sr in an environmental sample with 100 µg·g 1 stable strontium concentration. For analytical method validation, 90Sr was determined in two certified reference materials e.g. wild berry (IRMM-426) and freshwater lake sediment (NIST-4354) for the first time in the history of TIMS. This mass spectrometry method is faster than conventional radiometric techniques; however, interference from 90Zr and peak tailing on the higher mass side from 88Sr must be considered for a reliable 90Sr determination.},
 pages = {2964--2969},
 title = {Method for Sr-90 Analysis in Environmental Samples Using Thermal Ionization Mass Spectrometry with Daly Ion-Counting System},
 volume = {91},
 year = {2019}
}