Spectrophotometer for chemical analyses of fluids
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Abstract
An apparatus that conducts in situ analyses of fluids in real time is disclosed. The apparatus comprises bifurcated optic fibers, a pulsed light source, a light detector, a water-tight pressure case that houses the pulsed light source and the light detector, and a flow-through cell that receives one end of each bifurcated optic fiber. The flow-through cell may comprise a plurality of attached tube sections that define a volume which acts as a passageway for conducting fluids. One or more sections of the flow-through cell may be adapted to introduce a reagent into fluid flowing through the cell. Sections of the cell may contain potassium periodate and N,N-diethylaniline that are released into a fluid flowing through the passageway, enabling the spectrophotometer to analyze manganese (II) concentrations by monitoring the decrease in fluorescence accompanying the oxidation of DEA to 2 DEA'"'"'. The fluid may also be analyzed by measuring reflectance, absorption, turbidity, and fluorescence.
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Current AssigneeOregon State University (Oregon University System)
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Original AssigneeOregon State University (Oregon University System)
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InventorsKlinkhammer, Gary
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Primary Examiner(s)Housel, James C.
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Assistant Examiner(s)BHAT, NINA NMN
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Application NumberUS07/798,119Time in Patent Office875 DaysField of Search422/82.07, 422/82.09, 422/82.08, 436/52, 436/84, 436/172, 436/165, 436/805, 356/417, 250/461.1, 250/458.1, 250/343, 250/373US Class Current436/52CPC Class CodesG01N 2021/6484 Optical fibresG01N 21/643 non-biological materialG01N 21/645 Specially adapted construct...G01N 21/8507 Probe photometers, i.e. wit...G01N 2201/0218 Submersible, submarineY10S 436/805 Optical propertyY10T 436/117497 with a continuously flowing...
