抄録
The composition of a standard mixture containing methyl esters of C12, C14, C16 and C18 fatty acids was determined by a gas chromatograph with a flame ionization detector and an electronic integrator by changing the flow rate of the carrier gas, and the influence of the variation on the weight response of the components were examined. It was observed that the variation of the flow rate of the carrier gas had significant influence on the weight response of the components, especially on those of C12-Me and C18-Me.
Then the programmed temperature operation was carried out using a standard mixture of six components from C8-Me to C18-Me to examine if the correct analytical values would be obtained by this operation. The deviation of the analytical values from the known values was decreased by temperature programming, but not diminished. The weight response of the components increased as the carbon number increased, and the rate of the increase from C8-Me to C10-Me was significant. Therefore, authors believe that the influence of the carbonyl group in the molecule on the weight response of C8-Me and C10-Me is not negligible.
