本文介绍了用裂解气相色谱法测定桐油中的梓油。首先对桐油和梓油以及它们的混合物分别进行裂解测定,再根据所得到的桐油和梓油的指纹图确定出二者混合物中梓油的特征峰。最后利用工作曲线法求出桐油中梓浀的含量。本方法不需要处理样品,可以直接进行测定。 This paper describes the determination of tzi oil in tung oil by pyrolysis gas chromatography. First of all tung oil and Catalpa oil and their mixtures were measured for cracking, and then obtained from the tung oil and Catalpa oil fingerprinting to determine the mixture of two oil peaks characteristic. Finally, the working curve method was used to determine the content of Catalpa bungei. This method does not need to deal with the sample, can be directly measured.