Use of a fiber optic probe for organic species determination

Details Use of a fiber optic probe for organic species determination Use of a fiber optic probe for organic species determination

1995-01-31

1996-12-10

Snay, Jeffrey R.

Chemistry: analytical and immunological testing

Optical result

With reagent in absorbent or bibulous substrate

436171, 422 8206, G01N 2163

Patent

active

055830510

ABSTRACT:
A fiber optic probe for remotely detecting the presence and concentration organic species in aqueous solutions. The probe includes a cylindrical housing with an organic species indicator, preferably diaminonaphthyl sulfonic acid adsorbed in a silica gel (DANS-modified gel), contained in the probe's distal end. The probe admits aqueous solutions to the probe interior for mixing within the DANS-modified gel. An optical fiber transmits light through the DANS-modified gel while the indicator reacts with organic species present in the solution, thereby shifting the location of the fluorescent peak. The altered light is reflected to a receiving fiber that carries the light to a spectrophotometer or other analysis device.

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