Matrix Effect Studies in the Inductively Coupled Plasma with Monodisperse Droplets. Part II: The Influence of Matrix on Spatially Integrated Ion Density
Abstract:Monodisperse droplet sample introduction was used to study the ionization process in the inductively coupled plasma (ICP). The influence of the matrix on the analyte ion number density was evaluated by using laser-excited atomic fluorescence spectroscopy (LEAFS). The results suggest that the presence of 0.1 M NaCl enhances the ionization of the analyte species. With the addition of the NaCl, the spatially integrated Ba(II) signal decreases, apparently due to enhanced production of Ba2+. Added NaCl accelerates the appearance of Sc+, but does not affect the spatially integrated signal once ionization is complete. The possible effects on the fluorescence signal of quenching caused by the presence of the NaCl were evaluated by comparison of time-resolved and time-integrated detection. Quenching makes a small contribution to the fluorescence intensity change produced by the matrix but does not account for large loss in signal from singly ionized Ba.
Document Type: Research Article
Publication date: April 1, 1999
More about this publication?
- The Society publishes the internationally recognized, peer reviewed journal, Applied Spectroscopy, which is available both in print and online. Subscriptions are included with membership or can be purchased by institutional or corporate organizations. Abstracts may be viewed free of charge. Previously published as Bulletin (Society for Applied Spectroscopy)
- Editorial Board
- Information for Authors
- Submit a Paper
- Subscribe to this Title
- Membership Information
- Request copyrighted SAS materials
- Spectroscopic Nomenclature
- Focal Point (Open Access)
- ingentaconnect is not responsible for the content or availability of external websites