Abstract: In a liquid chromatographic system for analyzing biological or vital components in blood, etc., a separation column packed with a packing material of organic porous material containing carboxyalkyl groups as functional groups and having pore diameter of 600 to 1,200 .ANG. in dry state and an ion exchange capacity of 0.1 to 0.5 meq/g on dry basis is used to improve the chromatographic performance of the separation column, 5-component and 6-component analysis are carried out by switching separation columns of different column length or diameter, and judgement of column life is made by evaluation parameters.

Abstract: In separation column 23 is packed a filler consisting of an inorganic or organic porous substance having carboxyalkyl group and dihydroxyboronyl group. Thus, the separation column 23 can concurrently perform the procedure of separating glycohemoglobin, hemoglobin and hemoglobin derivatives in blood and the procedure of decomposing labile-type hemoglobin in blood into glucose and hemoglobin to remove the labile-type hemoglobin, when a diluted blood sample on sample table 19 along with eluents 8 to 10 is transferred to the separation column 23. Then, stable-type hemoglobin in the eluate from the separation column 23 is measured by UV-VIS detector 25.

Abstract: Stable hemoglobin A.sub.lc (s-A.sub.lc) can be separated from other hemoglobin components and quantitated in a short time by means of a liquid-chromatographic apparatus comprising a separation column packed with a packing material consisting essentially of a porous substance having a carboxyalkyl group combined thereinto, as ion exchanger, a means for injecting a sample into the separation column, a means for passing one or more eluents through the separation column, and a means for detecting hemoglobin, hemoglobin derivatives or glycosylated hemoglobin, the average particle size of the packing material in dry state being 4 .mu.m or less.

Abstract: A laser Raman microprobe separates a laser beam reflected by a sample and a Raman scattered light generated by the sample by a filter which transmits or reflects a light in a predetermined wavelength region including a wavelength region of the reflected laser beam and applies only the Raman scattered light separated by the filter to a single-monochromator for spectroanalysis. A high sensitivity analysis is attained by the single-monochromator.

Abstract: A laser Raman spectrophotometry system for analyzing a sample material by measuring spectrum of Raman scattering produced by the sample under irradiation of laser light includes a laser light source for excitation of luminescence in addition to a laser light source for the excitation of the Raman scattering, and an optical system for rendering the optical path of the laser beam for luminescence excitation to substantially coincide with the optical path of the laser beam for the Raman scattering immediately before irradiation of the specimen. Luminescence spectrum brought about by the laser beam for luminescence excitation is adjusted by adjusting the laser power to simulate the luminescence spectrum concurrently produced by the laser beam for the excitation of Raman scattering, wherein both spectra of luminescence are subtractively combined together, to thereby cancel the luminescence component and allow only the spectrum of Raman-scattered light to be measured with a correspondingly enhanced accuracy.

Abstract: A transparent conducting film is prepared from a composition comprising an indium compound, a tin compound, and a solvent as essential components, the tin compound being a compound represented by the following general formula:(R).sub.a Sn(NO.sub.3).sub.b (X).sub.4-a-b (1)wherein R is an alkyl group having 1 to 4 carbon atoms, X is a hydroxyl group, a halogen atom, or a carboxyl group, and a and b are integers of 1.about.3, and a+b.ltoreq.4 by coating a substrate with the said composition, subjecting the coated substrate to ultraviolet irradiation at a substrate temperature of 200.degree. C. or higher, and heating the substrate at 400.degree. C. or higher. The composition has a long pot life and the film has a low resistance and distinguished mechanical strength, chemical resistance and etching susceptibility.