The perservative in liquid beverage was extrcated with n-hexane.The hexane layer was subjected to cyclodextrine polymer resin colume.The colume was eluted with aqueous solution of ethanol.
The separation of three-component system of cyclohexane,cyclo-hexene and benzene by extract rectification with a mixed solvent,comprising hexyl dicyanide and dimethyl acetylamine has been studied.
In this paper,the contents of herbicide bifenox weredeterminated by the differential UV spectrophotometry at 280nm,and the reference solution was that the 40.
In the oxidation reaction of cyclohexene, total selection of cyclohexene oxide, cyclohexanol, cyclohexenol and 2-cyclohexene-l-one reaches 98.5%, conversion reaches 33.2%.