Photometric apparatus with multi-wavelength excitation

Details Photometric apparatus with multi-wavelength excitation Photometric apparatus with multi-wavelength excitation

1983-11-21

1986-01-21

Evans, F. L.

Optics: measuring and testing

By dispersed light spectroscopy

Utilizing a spectrophotometer

356334, 364498, G01J 342

Patent

active

045654476

ABSTRACT:
A system for photometric measurement of optical properties of a fluid medium utilizing multi-wavelength excitation includes a movable diffraction grating that is continuously oscillated over the spectral range of interest and a flashlamp producing high intensity, short duration flashes. The angular position of the grating at the time of a flash determines what wavelength of optical energy will be passed to the remainder of the system. Because the flash duration is brief in relation to the period of movement of the grating, the flash effectively freezes the motion of the grating allowing the high intensity output of the flashlamp to be supplied to the fluid medium, while successive flashes permit measurement at many different wavelengths in near simultaneous fashion. The system is disclosed for use in an absorbance detector for liquid chromatography.

REFERENCES:
patent: 3637310 (1972-01-01), Naono
patent: 3765769 (1973-10-01), Treacy
patent: 3810696 (1974-05-01), Hutchins, Jr.
patent: 4322807 (1982-03-01), Chamran et al.
patent: 4464051 (1984-08-01), Talmadge et al.
patent: 4482966 (1984-11-01), Mito et al.
"Scanning System for an Echelle Monochromator," Anderson et al., Anal. Chem., V. 53, No. 6, pp. 770-775, May 1981.
"Multiwavelength Detection for Liquid Chromatography with a Repeat-Scanning Ultraviolet-Visible Spectrophotometer," Saitoh et al., Anal. Chem., V. 51, No. 11, pp. 1683-1687, Sep. 1979.
"Microprocessor Control Automates New HPLC," Karasek, Research/Development, V. 28, No. 6, pp. 38-44, Jun. 1977.
"Computer-Controlled Programmable Monochromator System with Automated Wavelength Calibration and Background Correction," Spillman et al., Anal. Chem., V. 48, No. 2, pp. 303-311, Feb. 1976.
"Design of a Microprocessor-Based Data System for Chromatography," Hendrickson et al., Am Lab., V. 7, No. 9, pp. 100-107, Sep. 1975.

Affiliated with

Also associated with

Rating

Photometric apparatus with multi-wavelength excitation does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Photometric apparatus with multi-wavelength excitation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Photometric apparatus with multi-wavelength excitation will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2296118