Octadecylthiol-modified surface-enhanced Raman spectroscopy substrates: A new method for the detection of aromatic compounds

Journal Article · Thu Oct 01 00:00:00 EDT 1992 · Environmental Science and Technology; (United States)

DOI:https://doi.org/10.1021/es00034a011· OSTI ID:7069037

Carron, K; Peltersen, L; Lewis, M ^[1]

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1. Univ. of Wyoming, Laramie, WY (United States)

A method for detection of aromatic organics in groundwater has been tested. It was found that use of surface-enhanced Raman scattering and an octadecylthiol coating on roughened silver produced a system which could partition the organics out of water into the strongly Raman enhanced region near the silver surface. The selectivity of the method was illustrated with the three isomers of xylene. Sensitivity was tested with benzene and naphthalene. The detection limits are 7.5 and 2.3 ppm for benzene and naphthalene, respectively. It was found that the calibrations followed a Langmuir-type isotherm at low solution concentrations. 22 refs., 8 figs.

• OSTI ID: 7069037
• Journal Information: Environmental Science and Technology; (United States), Vol. 26:10; ISSN 0013-936X
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
GROUND WATER
QUANTITATIVE CHEMICAL ANALYSIS
ORGANIC COMPOUNDS
DETECTION
RAMAN SPECTROSCOPY
VOLATILE MATTER
OCTADECANOIC ACID
THIOLS
CARBOXYLIC ACIDS
CHEMICAL ANALYSIS
HYDROGEN COMPOUNDS
LASER SPECTROSCOPY
MATTER
MONOCARBOXYLIC ACIDS
ORGANIC ACIDS
ORGANIC SULFUR COMPOUNDS
OXYGEN COMPOUNDS
SPECTROSCOPY
WATER
540220* - Environment
Terrestrial- Chemicals Monitoring & Transport- (1990-)