Detection of Anions by Normal Raman Spectroscopy and Surface-Enhanced Raman Spectroscopy of Cationic-Coated Substrates
Authors: Mosier-Boss, P.A.; Lieberman, S.H.
Source: Applied Spectroscopy, Volume 57, Issue 9, Pages 259A-279A and 1053-1199 (September 2003) , pp. 1129-1137(9)
Publisher: Society for Applied Spectroscopy
Abstract:
The use of normal Raman spectroscopy and surface-enhanced Raman spectroscopy (SERS) of cationic-coated silver and gold substrates to detect polyatomic anions in aqueous environments is examined. For normal Raman spectroscopy, using near-infrared excitation, linear concentration responses were observed. Detection limits varied from 84 ppm for perchlorate to 2600 ppm for phosphate. In general, detection limits in the ppb to ppm concentration range for the polyatomic anions were achieved using cationic-coated SERS substrates. Adsorption of the polyatomic anions on the cationic-coated SERS substrates was described by a Frumkin isotherm. The SERS technique could not be used to detect dichromate, as this anion reacted with the coatings to form thiol esters. A competitive complexation method was used to evaluate the interaction of chloride ion with the cationic coatings. Hydrogen bonding and π-π interactions play significant roles in the selectivity of the cationic coatings.Keywords: SURFACE-ENHANCED RAMAN SPECTROSCOPY; SERS; CATIONIC THIOLS; POLYATOMIC ANIONS.
Document Type: Research article
DOI: http://dx.doi.org/10.1366/00037020360695991
Publication date: 2003-09-01
- 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
- Focus Compendium
- ingentaconnect is not responsible for the content or availability of external websites
- In this: publication
- By this: publisher
- In this Subject: Analytical Chemistry
- By this author: Mosier-Boss, P.A. ; Lieberman, S.H.

Shopping cart
Receive new issue alert
Get Permissions