Monday, February 25, 2008
Thursday, February 21, 2008
The technique of 2,6-di-tert-butyl-4-methylphenol extraction from transformer oil and its chromatographical determination by reversed-phase microcolumn HPLC are developed. The extraction system includes 2-propanol, liquid solution of ammonia and sulfate ammonia (for salting). Method provides definition of 2,6-di-tert-butyl-4-methylphenol in circuit-breaker oil in the interval of 1000-5000 mg/kg.