Novel 2D binning approach for advanced LIMS depth profiling analysis

Riedo, Andreas; Grimaudo, Valentine; Cedeño López, Alena; Tulej, Marek; Wurz, Peter; Broekmann, Peter (2019). Novel 2D binning approach for advanced LIMS depth profiling analysis. Journal of analytical atomic spectrometry, 34(8), pp. 1564-1570. Royal Society of Chemistry 10.1039/c9ja00138g

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Spatially resolved chemical analysis of solids is of high interest and importance to various fields in industrial and academic research. In this contribution, we report on recent improvements in chemical depth profiling using Laser Ablation Ionization Mass Spectrometry (LIMS). More specifically, we compare two distinct depth profiling protocols, i.e., (i) the previously applied single crater analysis approach, and (ii) a novel multiposition binning mode for a layer-by-layer removal of sample material. Arrays of electrodeposited 50 mm-sized Sn/Ag solder bumps served as the test bed for method development. The presented studies show that the novel layer-by-layer approach outperforms the previously used single crater analysis protocol with regard to the analysis of non-uniformly distributed minor bulk species by increasing the lateral measurement spot statistics. Furthermore, with the application of single laser shots per surface position and subsequent translation to a new position, a signal enhancement of more than one decade is observed, which is especially important for monitoring low abundant elements in bulk material.

Item Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Departement of Chemistry and Biochemistry
08 Faculty of Science > Physics Institute > Space Research and Planetary Sciences
08 Faculty of Science > Physics Institute

UniBE Contributor:

Riedo, Andreas; Riedo, Valentine; Tulej, Marek; Wurz, Peter and Broekmann, Peter

Subjects:

500 Science > 570 Life sciences; biology
500 Science > 540 Chemistry
500 Science > 520 Astronomy
500 Science > 530 Physics
600 Technology > 620 Engineering

ISSN:

0267-9477

Publisher:

Royal Society of Chemistry

Language:

English

Submitter:

Dora Ursula Zimmerer

Date Deposited:

22 Jul 2019 12:30

Last Modified:

06 Aug 2019 01:32

Publisher DOI:

10.1039/c9ja00138g

BORIS DOI:

10.7892/boris.131954

URI:

https://boris.unibe.ch/id/eprint/131954

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