Method of measuring furfural content in transformer oil
The invention relates to a method of measuring furfural content in transformer oil, comprising: (1) extracting furfural; (2) measuring furfural content. In the method, furfural extraction refers to: using ethanol solution of monopotassium phosphate as an extracting agent to extract furfural in the t...
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| Format: | Patent |
| Sprache: | chi ; eng |
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| Zusammenfassung: | The invention relates to a method of measuring furfural content in transformer oil, comprising: (1) extracting furfural; (2) measuring furfural content. In the method, furfural extraction refers to: using ethanol solution of monopotassium phosphate as an extracting agent to extract furfural in the transformer oil; the furfural may partially dissolve in ethanol; by adding suitable monopotassium phosphate to ethanol and controlling the temperature, the furfural can be completely dissolve in the ethanol solution of monopotassium phosphate, and the furfural in the transformer oil can be extractedcompletely; ethanol solution of monopotassium phosphate is used as a mobile phase of liquid chromatograph test to analyze furfural content, and measurement precision for furfural content in the transformer oil can be maintained to 94-96% by changing the content of monopotassium phosphate in the ethanol solution of monopotassium phosphate and optimizing the parameters, such as flow speed of the mobile phase and column temp |
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