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Experimental assessment of a large sample cell for laser ablation-ICP-MS, and its application to sediment core micro-analysis

Gabriele Carugati (Institutionen för bygg- och miljöteknik, Vatten Miljö Teknik) ; Sebastien Rauch (Institutionen för bygg- och miljöteknik, Vatten Miljö Teknik) ; M. E. Kylander
Microchimica Acta (0026-3672). Vol. 170 (2010), 1-2, p. 39-45.
[Artikel, refereegranskad vetenskaplig]

The coupling of laser ablation (LA) to inductively coupled plasma-mass spectrometry (ICP-MS) enables the direct analysis of solid samples with micrometric resolution. Analysis is often restricted to relatively small samples owing to the dimensions of conventional ablation cells. Here, we assess the performance of a large rectangular, commercially-available sample cell which enables analysis over a 10.2 x 5.2 cm(2) area. Comparison with the conventional cell shows a small to moderate performance decrease for the large cell resulting from the dilution of ablated particles in a larger volume with a 4-31% lower signal output and longer signal tailings. The performance of this cell is however sufficient for the determination of both major and trace elements in many kinds of samples. The applicability of the large cell LA-ICP-MS setup was demonstrated by the determination of Al, Si, Mn, Fe, Cu, Zn Pb and U in sediment core sections at a resolution of 0.6 mm. Detection limits for sediment analysis were 7 mg Al kg(-1), 68 mg Si kg(-1), 0.5 mg Mn kg(-1), 20 mg Fe kg(-1), 0.2 mg Cu kg(-1), 0.3 mg Zn kg(-1), 0.08 mg Pb kg(-1) and 0.003 mg U kg(-1). Cyclic patterns, which would have been overlooked by conventional analysis at cm resolution, were observed in analysed sediments. This study demonstrates the potential of LA-ICP-MS in environmental analysis, with the large sample cell setup offering the possibility to analyse a wider range of samples without sectioning.

Nyckelord: LA-ICP-MS, Large volume cell, Sediment core, Micro analysis, Trace, elements, plasma-mass spectrometry, performance

Denna post skapades 2010-08-10. Senast ändrad 2017-06-28.
CPL Pubid: 124344


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Institutioner (Chalmers)

Institutionen för bygg- och miljöteknik, Vatten Miljö Teknik (2005-2017)



Chalmers infrastruktur