Determination of the 240Pu/239Pu atom ratio in low activity environmental samples by alpha spectrometry and spectral deconvolution

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

“…Although the 240 Pu/ 239 Pu atom ratios are not certified, the ratios obtained for the reference samples (Table 4) agree with other reported values using various analytical techniques such as ICP-MS, accelerator mass spectrometry, thermal ionisation mass spectrometry and high-resolution ␣-spectrometry [6,19,[27][28][29]32,[35][36][37][38][39][40][41][42][43][44][45][46]. The precisions (n = 10) of the measurements ranged from 1.7% to 8.6% depending on the total Pu concentrations in the samples.…”