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DIFFUSE REFLECTANCE (DR) SPECTROMETRY IS BECOMING AN IMPORTANT TECHNIQUE FOR CHARACTERIZING POWERED SAMPLES; HOWEVER, SURPRISINGLY LITTLE IS KNOWN ABOUT THE TECHNIQUE, AND ITS UTILITY WILL BE LIMITED UNTIL THE QUANTITATIVE BEHAVIOR IS MORE THOROUGHLY

Award Information
Agency: Department of Health and Human Services
Branch: N/A
Contract: N/A
Agency Tracking Number: 1488
Amount: $40,600.00
Phase: Phase I
Program: SBIR
Solicitation Topic Code: N/A
Solicitation Number: N/A
Timeline
Solicitation Year: N/A
Award Year: 1984
Award Start Date (Proposal Award Date): N/A
Award End Date (Contract End Date): N/A
Small Business Information
88 Broadway Box 351
Ossining, NY 10562
United States
DUNS: N/A
HUBZone Owned: No
Woman Owned: No
Socially and Economically Disadvantaged: No
Principal Investigator
 NJ HARRICK
 PRESIDENT
 () -
Business Contact
Phone: () -
Research Institution
N/A
Abstract

DIFFUSE REFLECTANCE (DR) SPECTROMETRY IS BECOMING AN IMPORTANT TECHNIQUE FOR CHARACTERIZING POWERED SAMPLES; HOWEVER, SURPRISINGLY LITTLE IS KNOWN ABOUT THE TECHNIQUE, AND ITS UTILITY WILL BE LIMITED UNTIL THE QUANTITATIVE BEHAVIOR IS MORE THOROUGHLY UNDERSTOOD. THE EFFECT OF OPTICAL GEOMETRY ON DIFFUSE REFLECTANCE SPECTRA OF SEVERAL TYPES OF SAMPLES INCLUDING MATERIALS WITHOUT SHARP ABSORPTION BANDS, NEAT POWDERED MATERIALS (ORGANIC MATERIALS WITH WEAK ABSORPTION BANDS AND INORGANIC MATERIALS WITH BANDS OF GREATER ABSORPTION), EFFECT OF PARTICLE SIZE FOR ALL SAMPLES, AND THE EFFECT OF DILUTION OF THE SAMPLES IN KCL WILL BE STUDIED AS WILL VARYING THE ANGLE OF INCIDENCE AND THE ANGLE OF REFLECTION. ALSO TO BE STUDIED IS THE FEASIBILITY OF MEASURING THE DR SPECTRA OF POWDERS DISPERSED IN LIQUIDS. SUCH MEASUREMENTS COULD HAVE CONSIDERABLE SIGNIFICANCE IN THE DETECTION OF LOW LEVELS OF DRUGS AND THEIR METABOLITES IN PHYSIOLOGICAL FLUIDS. IN ADDITION, BECAUSE A NUMBER OF MANUFACTURERS PRODUCE DIFFUSE REFLECTANCE SPECTROMETERS WHICH SHOW DIFFERENCES WHICH CAN (AND DO) AFFECT THE SPECTRA, IT IS IMPORTANT TO DETERMINE THE OPTIMUM GEOMETRY FOR DR SPECTROSCOPY SO THAT A CONSISTENCY BETWEEN COMMERCIAL INSTRUMENTS CAN BE OBTAINED.

* Information listed above is at the time of submission. *

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