Radiant energy – Invisible radiant energy responsive electric signalling – Ultraviolet light responsive means
Patent
1988-06-28
1989-05-09
Evans, F. L.
Radiant energy
Invisible radiant energy responsive electric signalling
Ultraviolet light responsive means
356 51, G01N 2133
Patent
active
048291862
ABSTRACT:
The presence and concentration of a light absorbing constituent in a fluid medium is determined in-situ by immersing in such medium a probe having a prism at one end whose refractive index is greater than that of the medium and causing light including a wavelength absorbable by such constituent to traverse an optical path through the prism and undergo successive attenuated total reflections. At each reflection some of the light will be absorbed by the constituent. The intensity of light emerging from the prism is measured at one or more wavelengths, including one absorbable by such constituent. The concentration of the constituent is determined by comparison of the measured intensity with values obtained from like measurements performed on like mediums containing known concentrations of the constituent.
REFERENCES:
patent: 3733130 (1973-05-01), Young
patent: 3751672 (1973-08-01), Michel et al.
patent: 3917410 (1975-11-01), Ulrich
patent: 4228192 (1980-10-01), Sanden
patent: 4427293 (1984-01-01), Harmer
patent: 4602869 (1986-07-01), Harrick
"Infrared ATR Determination of Alcohols in Aqueous Solution", Malone et al., Spectrochemic or Acta 8/1965, pp. 1361-1366.
"Application of Attenuated Total Reflectance IR Spectroscopy to Toilet Articles and Household Products 2-Quantative Analysis", Puttnam et al., J. Soc. Cosmetic Chemist, 1/1966, pp. 9-16, vol. 17.
Chrisman Ray W.
McLachlan Richard D.
Evans F. L.
McCulloch John K.
The Dow Chemical Company
LandOfFree
Methods and apparatus for measuring the light absorbance of a fl does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Methods and apparatus for measuring the light absorbance of a fl, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Methods and apparatus for measuring the light absorbance of a fl will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-91214