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Title: Detection of chlorinated aromatic compounds

A method for making a composition for measuring the concentration of chlorinated aromatic compounds in aqueous fluids, and an optical probe for use with the method are disclosed. The composition comprises a hydrophobic polymer matrix, preferably polyamide, with a fluorescent indicator uniformly dispersed therein. The indicator fluoresces in the presence of the chlorinated aromatic compounds with an intensity dependent on the concentration of these compounds in the fluid of interest, such as 8-amino-2-naphthalene sulfonate. The probe includes a hollow cylindrical housing that contains the composition in its distal end. The probe admits an aqueous fluid to the probe interior for exposure to the composition. An optical fiber transmits excitation light from a remote source to the composition while the indicator reacts with chlorinated aromatic compounds present in the fluid. The resulting fluorescence light signal is reflected to a second optical fiber that transmits the light to a spectrophotometer for analysis. 5 figs.
Inventors:
Issue Date:
OSTI Identifier:
187059
Assignee:
Dept. of Energy, Washington, DC (United States) PTO; SCA: 400102; PA: EDB-96:038006; SN: 96001532299
Patent Number(s):
US 5,489,536/A/
Application Number:
PAN: 8-304,975
Contract Number:
AC09-89SR18035
Resource Relation:
Other Information: PBD: 6 Feb 1996
Research Org:
Westinghouse Savannah River Co
Country of Publication:
United States
Language:
English
Subject:
40 CHEMISTRY; CHLORINATED AROMATIC HYDROCARBONS; SPECTROPHOTOMETRY; SPECTROPHOTOMETERS; DESIGN; QUANTITATIVE CHEMICAL ANALYSIS; INDICATORS; POLYAMIDES; AQUEOUS SOLUTIONS; FIBER OPTICS

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