Objective To develop a capillary gas chromatographic( CGC) method for the determination of fatty acid contents and to establish a fingerprints database of fatty acids for the identification of hogw ash oils and discrimination of edible oils. Methods We set the conditions for CGC measurement as follow ing: using strongly polar stationary phase capillary column w ith temperature programming,pure nitrogen as carrier gas,w ith the injector temperature of260 ℃,sample injection of 1 μL,and split/splitless mode fo...