Introduction of the Rapid Analysis Method for PCBs in Insulating Oils and Its Comparison Study to the Analysis Method in Korea

摘要

The aim of this research was to introduce a new rapid analysis method (heating of the multi-layer silica gel column/alumina column) for polychlorinated biphenyls in insulating oils,and to compare our new method with the analytical method currently used in Korea. The entire pretreatment procedure was completed within 2 hr,using about only 20 mL of solvents via our rapid analytical method. Furthermore,the pretreatment procedure can always be uniformly performed,regardless of oil type (JIS 1～JIS 7 and KS 1 ~KS 7). The recovery rates were more than 89%,with relative standard deviations below 6.0%. In conclusion,this rapid analytical method could reduce the pretreatment time and solvent usage by 1 /10 and between 1/25 and 1/50,respectively,compared to analytical method currently used in Korea.