Photometric flow apparatus for small sample volumes and method o

Details Photometric flow apparatus for small sample volumes and method o Photometric flow apparatus for small sample volumes and method o

1996-09-06

1999-06-29

Kim, Robert

Optics: measuring and testing

For light transmission or absorption

Of fluent material

356246, G01N 2100, G01N 110

Patent

active

059176067

ABSTRACT:
A photometric apparatus (100) for small sample volumes comprises a cell body (102), a light input means (104) arranged adjacent to a first surface of the cell body (102), a light source (105) emitting light of predetermined wavelength or wavelength range through the light input means (104), a light output means (106) arranged adjacent to a second surface of the cell body (102) opposite to the first surface, a light detector (107) arranged adjacent to the light out put means (104), and a flow channel (108) formed in the cell body (102), wherein surfaces of the walls of the channel (108) have a roughness smaller than the predetermined wavelength.

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patent: 5171995 (1992-12-01), Gast et al.
patent: 5273633 (1993-12-01), Wang
patent: 5493405 (1996-02-01), Hulme
Ahmad A. Abbas, et al., "Optical properties of axial-illumination flow cells for simultaneous absorbance-fluorescence detection in micro liquid chromatography," Journal of Chromatography, vol. 691, pp. 37-53.
James W. Jorgenson, et al., "High-resolution separations based on electrophoresis and electroosmosis," Journal of Chromatography, vol. 218, pp. 209-216.
James W. Jorgenson, et al., "Zone Electrophoresis in Open Tubular Glass Capillaries," Analytical Chemistry, Jul. 1981, pp. 1298-1302.
Xiaobing XI, et al., "Axial-Beam On-Column Absorption Detection for Open Tubular Capillary Liquid Chromatography," Analytical Chemistry, Aug. 1, 1990, pp. 1580-1585.

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