Determination of fetogram plutonium by extraction chromatography using isotope dilution inductively coupled plasma mass spectrometry

Citation
Yr. Jin et al., Determination of fetogram plutonium by extraction chromatography using isotope dilution inductively coupled plasma mass spectrometry, ACT CHIM S, 58(10), 2000, pp. 1291-1295
Citations number
10
Categorie Soggetti
Chemistry
Journal title
ACTA CHIMICA SINICA
ISSN journal
05677351 → ACNP
Volume
58
Issue
10
Year of publication
2000
Pages
1291 - 1295
Database
ISI
SICI code
0567-7351(2000)58:10<1291:DOFPBE>2.0.ZU;2-R
Abstract
This work reports the determination of fetogram plutonium using isotope dil ution ICP - MS. The interference of protonated uranium at m/z of 239, with a determined UH+/U+ ratio of 4.6 x 10(-5), was removed by using tri-n-octyl amine extraction chromatography. The separation factor of 10(4) was achieve d for uranium and the recovery of plutonium was greater than 75%. By applyi ng isotope dilution, fetogram range of plutonium was measured using a high - resolution ICP - MS with a sample volume of less than 1mL. The limit of d etection of Pu-239 is 4.5 x 10(-15) g/mL for standard solution, and 16.3 x 10(-15) g/mL for real sample with matrix. The concentration of Pu-239 in re gion atmosphere was determined at a level of (4.8 +/- 2.9) x 10(-17) g/m(3) .