Combining standard addition and isotope dilution in order to improve SI traceable LA-ICP-MS measurements

Abstract

Laser ablation (LA) combined with inductively coupled plasma mass spectrometry (ICP-MS) is a common method for analysing non-matrix elements in solid samples directly. Although LA was significantly improved over the...

Atomic spectrometry update – a review of advances in environmental analysis

“…By normalising the bulk element oxides to a certain value (not 100 wt%) based on the mineral formula, the results were within ±1% and ±5% of those obtained by the IS method for fluorapatite and mica, respectively. Michaliszyn et al 227 introduced simultaneously ( via a Y-piece) both SI-traceable solutions with various isotope ratios and ablated material from the sample into the plasma of an LA-ICP-MS instrument. This approach, combining ID and standard addition, was demonstrated by the determination of B in NIST SRM 612 (trace elements in glass) (certificate information value 32 μg g −1 ) for which a value of 33.3 ± 3.7 μg g −1 was obtained.…”

Atomic spectrometry update: review of advances in the analysis of metals, chemicals and materials

“…A paper by Michaliszyn et al has attempted to address this by combining standard addition and isotopic dilution to improve SI traceability . 147 From the trace elemental composition of the sample and from using SI traceable solutions, it is possible to calculate an uncertainty budget for an analyte. These authors used two concentration series – one for the analyte (B) and the other for the reference element, with these solutions having varied isotopic ratios.…”