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Investigation of static SIMS signal enhancement by halide acid substrate treatment
Author(s) -
Choi Bernard K.,
Gusev Arkady I.,
Houalla Marwan,
Hercules David M.
Publication year - 2000
Publication title -
surface and interface analysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.52
H-Index - 90
eISSN - 1096-9918
pISSN - 0142-2421
DOI - 10.1002/(sici)1096-9918(200004)29:4<284::aid-sia741>3.0.co;2-r
Subject(s) - halide , chemistry , secondary ion mass spectrometry , aqueous solution , substrate (aquarium) , adsorption , analytical chemistry (journal) , ion , inorganic chemistry , ion exchange , mass spectrometry , chromatography , organic chemistry , oceanography , geology
The enhancement of the (M + H) + static secondary ion mass spectrometry (static SIMS) signal intensity re‐sulting from pretreatment of silver sample substrates with aqueous halide acids was studied. Surface coverage experiments with silver halide surfaces prepared by aqueous halide acid treatment and electrodeposition indicated that the presence of silver halides alone could not account for the observed enhancement. Deuterium exchange studies showed that protons are adsorbed on the substrate during the acid treatment. It is likely that these protons are responsible for the improvement of static SIMS signal intensity by promoting the formation of M+H) + species. Copyright © 2000 John Wiley & Sons, Ltd.