Multiple ion counting determination of plutonium isotope ratios using multi-collector ICP-MS

Inductively coupled plasma mass spectrometry (ICP-MS) and laser ablation ICP-MS for isotope analysis of long-lived radionuclides

“…Isotope ratio measurements of 230 Th/ 230 Th equal to 6 × 10 −6 (at Th concentration of 5 g L −1 ) were performed with a precision of 1.1% (R.S.D.). For example, Taylor et al [84] described the plutonium isotope ratio measurements at ultratrace level by MC-ICP-MS using multiple ion counting. The 240 Pu/ 239 Pu isotope ratio can be reproduced to better than 3% with less than 120 fg of Pu.…”

Isotope ratio analysis of actinides, fission products, and geolocators by high-efficiency multi-collector thermal ionization mass spectrometry

“…An even better RSD, as low as 0.1%, is achievable on MICs as demonstrated by Goldberg et al [160] for uranium isotope ratio measurements using the same MC-TIMS generation, but at more favorable ratios ( 235 U/ 238 U ≈ 1) and higher analyte concentration (10 pg U loads). Using multi-collector sector-field ICP-MS for isotope ratio analysis, Riciputi et al (2007b) [161] report a RSD of about 1% (2 ) for minor plutonium isotope amounts of a few femtograms; Taylor et al [162] a RSD of about 3% (2 ) for a few femtograms (minor plutonium isotope); and Snow and Friedrich [163] a RSD of about 0.2% (2 ) for uranium at a few picograms of the minor isotopes. In this study (see Fig.…”

Ultra-trace determination of plutonium in marine samples using multi-collector inductively coupled plasma mass spectrometry

“…Recent advances in ICP-MS have made the determination of the two Pu isotopes in environmental samples more reliable and accessible with relatively simple sample handling [8,9]. Multicollector ICP-MS is a suitable technique for Pu isotope ratio analyses in low-level environmental samples due to its high sensitivity as well as its excellent precision and accuracy [10][11][12].…”