Quantitative analysis method for furan of deteriorated insulating oil and quantitative analysis kit for the same

摘要

Disclosed deteriorated insulating oil furan quantitative analysis method and quantitative analysis kit, characterized in that the furfural extracted from the insulating oil sample by using an extraction solvent color development with a substituted aniline derivative and acid catalyst and then quantitatively analyzed by a colorimetric system. As a simple kit for deteriorating insulating oil and furan quantitative analysis, the furfural extracted by using an extraction solvent from a sample is colored with a substituted aniline derivative and an acid catalyst and quantitatively analyzed by a colorimetric system, wherein the insulating oil sample and the extraction solvent are mixed and accommodated. Mixing container; A mixer for rotating the mixing vessel to mix the insulating oil sample and the extraction solvent to extract the furfural; A layer separation container accommodating the insulating oil sample and the extraction solvent mixed by the mixer; A cock valve connected to a lower end of the layer separation vessel to selectively discharge the furfural solution including the furfural extracted from the insulating oil sample; A colorimeter for measuring absorbance by irradiating light on an absorbance analysis sample in which the substituted aniline derivative and the acid catalyst are mixed with the discharged furfural solution; And a calculation unit for calculating the concentration of furfural from the absorbance measured by the colorimeter.