Authors:C. Greis, S. Karlsson, A. Düker, H. Pettersson, and B. Allard
A method for rapid determination of plutonium isotopes in environmental samples with ultrasonic nebulisation and quadrupole
ICP-MS detection was established. Techniques for sample dissolution, pre-concentration and chemical separation were evaluated
and the optimal scheme outlined. Comparisons with α-spectrometry and high resolution ICP-MS confirmed the suitability of the method when applied to different environmental matrices
within the global fallout concentration range in the northern hemisphere as well as more contaminated sites. Operational detection
limits were 0.5–1.5 fg/l for fresh waters and 0.03–0.1 ng/kg for lake sediments and saline marsh sediments.