1996/10/01 by M.D. NORMAN, M. D. Norman, Norman J. Pearson +5 · 1 citation
Arts and Humanities · Chemistry · Engineering · Mathematics · Physics and Astronomy · #Accuracy and precision #Analytical Chemistry (journal) #Calibration #Calibration curve #Chemistry #Chromatography #Cultural Heritage Materials Analysis #Detection limit #Electron microprobe #Laser #Laser ablation #Laser-induced spectroscopy and plasma #Materials science #Mathematics #Metallurgy #Microprobe #Mineralogy #NIST #Optics #Physics #Statistics #Trace element #X-ray Spectroscopy and Fluorescence Analysis
paper · doi:10.1111/j.1751-908x.1996.tb00186.x
crossref issued 1996/10/01 · crossref published 1996/10/01 · crossref published-print 1996/10/01 · openalex publication_date 1996/10/01 · crossref published-online 2007/05/31 · crossref created 2007/05/31 · crossref deposited 2023/10/27 · openalex created_date 2025/10/10 · crossref indexed 2026/07/30 · openalex updated_date 2026/07/30
A UV laser ablation microprobe coupled to an ICPMS has been used to determine trace element concentrations in solids with a spatial resolution of 50 microns and detection limits ranging from 2 μg/g for Ni to 50 ng/g for the REE, The, and U. Experiments designed to optimize laser operating conditions show that pulse rates of 4 Hz produce a steady state signal with less inter‐element fractionation per unit time than higher pulse rates (10–20 Hz). Comparisons of laser microprobe analyses of garnets and pyroxenes using the NIST 610 and 612 glasses as calibration standards, with proton microprobe, solution ICPMS, INAA and XRF data show no significant matrix effects. Laser microprobe analyses of the NIST 610 and 612 glasses have a precision and accuracy of 2–5%, and error analysis shows that counting statistics and the precision on the internal standard concentration accounts for the analytical uncertainty. The NIST glasses appear to be useful calibration materials for trace element analysis of geological materials by laser microprobe.