Achieving confidence in trace element analysis for nuclear forensic purposes: ICP-MS measurements using external calibration
Artikel i vetenskaplig tidskrift, 2019

In this work, problems arising from performing trace element analysis using inductively coupled plasma—mass spectrometry with low measurement uncertainties are addressed. It is shown that some reference materials certified for massic concentration of lanthanides may have either deviating concentrations or underestimated measurement uncertainties. It is also shown that the choice of methods for sample preparation and linear regression to perform external calibration is affecting the outcome of the measurement results and their uncertainties. The results show that, from the selection of methods investigated in this work, the lowest measurement uncertainties can be achieved by using weighted linear regression to evaluate the calibration function and gravimetric dilutions of samples.

Trace element analysis

Nuclear forensics

Quality control

External kalibration

Författare

Anna Vesterlund

Chalmers, Kemi och kemiteknik, Energi och material, Kärnkemi

Henrik Ramebäck

Chalmers, Kemi och kemiteknik

Journal of Radioanalytical and Nuclear Chemistry

0236-5731 (ISSN) 1588-2780 (eISSN)

Vol. 322 2 941-948

Ämneskategorier

Analytisk kemi

Annan kemiteknik

DOI

10.1007/s10967-019-06795-0

Mer information

Senast uppdaterat

2019-11-05