TY  - JOUR
A1  - Nambiar, Romi
A1  - Müller, Wolfgang
A1  - Evans, David
T1  - Evaluating accuracy improvements of laser ablation ICPMS element analysis in silicate glasses and carbonates via downhole fractionation correction – an old problem re-assessed
T2  - Journal of analytical atomic spectrometry
N2  - Non-matrix-matched calibration of laser ablation ICPMS (trace/major) element data is a common quantification strategy. However, LA sampling is associated with downhole elemental fractionation, potentially causing inaccuracies if the magnitude of fractionation between the sample and reference material (RM) differs. Here, we estimate fractionation factors (FFs) for different elements (El) in a range of RMs relative to NIST SRM610/612 (FFEl/Ca-NIST) and evaluate element-specific corrections for downhole fractionation using these measured FFEl/Ca-NIST. Significantly different mean El/Ca values were observed before and after correction, particularly for the alkali elements (all RMs), and B, Fe, and Zn (some RMs), notably improving accuracy, especially for the alkali elements. In cases where this methodology does not result in an accuracy improvement, this may help identify underlying issues in reported/reference values for RMs, given that this phenomenon should be accounted for. Overall, we recommend considering routine assessment of FFs and applying a FF correction to enhance data quality.
Y1  - 2024
UR  - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/84327
UR  - https://nbn-resolving.org/urn:nbn:de:hebis:30:3-843270
SN  - 1364-5544
VL  - 2024
PB  - Royal Society of Chemistry
CY  - Cambridge
ER  -