title: Organic secondary ion mass spectrometry: signal enhancement by water vapor injection.
abstract: The enhancement of the static secondary ion mass spectrometry (SIMS) signals resulting from the injection, closely to the sample surface, of H(2)O vapor at relatively high-pressure, was investigated for a set of organic materials. While the ion signals are generally improved with increasing H(2)O pressure upon 12 keV Ga(+) bombardment, a specific enhancement of the protonated ion intensity is clearly demonstrated in each case. For instance, the presence of H(2)O vapor induces an enhancement by one order of magnitude of the [M + H](+) static SIMS intensity for the antioxidant Irgafos 168 and a ∼1.5-fold increase for polymers such as poly(vinyl pyrrolidone).
authors.affiliation: Institute of Condensed Matter and Nanosciences–Bio and Soft Matter (IMCN/BSMA), Université catholique de Louvain, Louvain-la-Neuve, Belgium. taoufiq.mouhib@uclouvain.be
authors.forename: Taoufiq
authors.initials: T
authors.lastname: Mouhib
authors.forename: Arnaud
authors.initials: A
authors.lastname: Delcorte
authors.forename: Claude
authors.initials: C
authors.lastname: Poleunis
authors.forename: Patrick
authors.initials: P
authors.lastname: Bertrand
mesh_terms: D005740:Gases / Q000737:chemistry; D013058:Mass Spectrometry / Q000379:methods*; D008970:Molecular Weight; D017905:Phosphites / Q000737:chemistry; D011205:Povidone / Q000737:chemistry; D011312:Pressure; D012680:Sensitivity and Specificity; D012815:Signal Processing, Computer-Assisted; D013227:Steam
chemical_list: D005740:Gases; D017905:Phosphites; D013227:Steam; C083748:tris-(2,4-di-tert-butylphenyl) phosphite; D011205:Povidone