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- W2328811340 abstract "The steam carrier adsorption gas chromatography may be applicable to the analysis of polyalcohols, fatty acids, phenols and amines.A crushed insulating firebrick (SiO2 50%; Al2O3 45%; and others), modified by potassium fluoride for diols, or added further a little phosphoric acid for glycerol, being packed in a glass column, serves as adsorbents, through which steam may carry these materials separately without remarkable tailing at comparatively low temperature (130°C), even an aqueous sample being separable.The separation columns for fatty acids up to C18, phenol, cresol and alkyl-phenols by steam carrier without any troubles are prepared by heating at 500 °C a glass column containing firebrick powder to which 13% phosphoric acid is absorbed. These columns can be detectable at the concentration lower than 1 ppm aqueous solution of low fatty acids and phenols, by a hydrogen flame ionization detector. To use these acidic columns, alkaline metal salts of fatty acids show the similar figure of chromatogram to the free acids.Amines can be eluted fractionally through the separation column of magnesia powder and an aluminum pipe with so little tailing that analysis of dilute aqueous samples of alkyl-amines, pyridine, aniline and their derivatives (including hydrogen chloride salts) is achieved.These chromatographys are operated at 100°C to 230 °C.This method might be expected to be applicable to more organic chemicals." @default.
- W2328811340 created "2016-06-24" @default.
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- W2328811340 date "1968-01-01" @default.
- W2328811340 modified "2023-10-14" @default.
- W2328811340 title "Steam carrier adsorption gas chromatography for polar organic compounds" @default.
- W2328811340 doi "https://doi.org/10.2116/bunsekikagaku.17.91" @default.
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