Сhromatographic methods for the study of organic extractants of transformer oil

THE PURPOSE. In order to control the technical condition of oil-filled electrical equipment, a number new analytical methods have recently been created determine ultra-low concentrations impurity compounds in transformer oil. An analysis literature data showed that at this stage procedure significant errors may occur worsen quality and some cases make its results meaningless. The published practically does not discuss problem sample preparation oil, which negatively affects control, is, reliability and, accordingly, diagnosis equipment. METHODS. paper discusses system for is based on various extracting target components from it. adsorption process used, chemical derivatives, types extraction, liquid, gas, solid phase fluid, as well using low temperatures, extraction microwave, magnetic, electromagnetic centrifugal fields. It shown liquid with an organic solvent widely used all methods, help furan resulting destruction insulation are extracted disadvantages liquid-phase possibility solid-phase adsorbents purpose discussed. RESULTS. experimental study sorption properties solvents respect porous materials differing structure their surface presented. We zeolite-bearing rocks Tatar-Shatrashansky deposit, synthetic zeolites NaX-13 A . Using ascending variant column chromatography, absolute retention values standard extractants were determined dependence length layer material was found. CONCLUSIONS. highest times studied observed organochlorine extractants, chloroform, carbon tetrachloride, dichloroethane, trichlorethylene. For N. Hexane relatively small interaction. Histograms given effect time sorbates (extractants) physicochemical nature.