Detection of Nitrate and Sulfate Anions by Normal Raman Spectroscopy and SERS of Cationic-Coated, Silver Substrates
- 1 August 2000
- journal article
- research article
- Published by SAGE Publications in Applied Spectroscopy
- Vol. 54 (8) , 1126-1135
- https://doi.org/10.1366/0003702001950922
Abstract
The use of normal Raman spectroscopy and surface-enhanced Raman spectroscopy (SERS) of cationic-coated, silver substrates to detect nitrate and sulfate ions in aqueous environments is examined. For normal Raman spectroscopy using near-infrared excitation, a linear concentration response was observed with detection limits of 260 and 440 ppm for nitrate and sulfate, respectively. Detection limits in the low parts-per-million concentration range for these anions are achieved by using cationic-coated, silver SERS substrates. Adsorption of the anions on the cationic-coated SERS substrates is described by a Frumkin isotherm.Keywords
This publication has 45 references indexed in Scilit:
- Is Coastal Eutrophication Out of Control?Environmental Science & Technology, 1998
- What Is Causing Toxic Algal Blooms?Environmental Science & Technology, 1998
- Evaluation of External-Cavity Diode Lasers for Raman SpectroscopyApplied Spectroscopy, 1995
- The nitrate contamination of private well water in Iowa.American Journal of Public Health, 1993
- Near-Infrared Raman Spectroscopy of Liquids and Solids with a Fiber-Optic Sampler, Diode Laser, and CCD DetectorApplied Spectroscopy, 1990
- Near-infrared surface-enhanced Raman spectroscopy using a diode laserAnalytical Chemistry, 1989
- Fiber optic probe for remote Raman spectrometryAnalytical Chemistry, 1983
- Surface raman spectroelectrochemistryJournal of Electroanalytical Chemistry and Interfacial Electrochemistry, 1977
- Raman spectra of pyridine adsorbed at a silver electrodeChemical Physics Letters, 1974
- Nitrosamines as Environmental CarcinogensNature, 1970