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Title: Detection of chlorinated aromatic compounds

A method for making a composition for measuring the concentration of chloated aromatic compounds in aqueous fluids, and an optical probe for use with the method. 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.
  1. (Augusta, GA)
Issue Date:
OSTI Identifier:
United States of America as represented by Department of Energy (Washington, DC) SRS
Patent Number(s):
US 5489536
Contract Number:
Research Org:
Country of Publication:
United States
detection; chlorinated; aromatic; compounds; method; composition; measuring; concentration; chloated; aqueous; fluids; optical; probe; comprises; hydrophobic; polymer; matrix; preferably; polyamide; fluorescent; indicator; uniformly; dispersed; therein; fluoresces; presence; intensity; dependent; fluid; 8-amino-2-naphthalene; sulfonate; hollow; cylindrical; housing; contains; distal; admits; interior; exposure; fiber; transmits; excitation; light; remote; source; reacts; resulting; fluorescence; signal; reflected; spectrophotometer; analysis; aromatic compound; dispersed therein; hollow cylindrical; cylindrical housing; composition comprises; aromatic compounds; optical fiber; optical probe; excitation light; polymer matrix; light signal; uniformly dispersed; remote source; aqueous fluid; uniformly disperse; hydrophobic polymer; /436/422/