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通过气相色谱／质谱分析鉴定了广东天然桂油中的肉桂醛等２２种成分；分析了一些不同来源的合成肉桂醛样品，它们含有天然桂油中没有的合成肉桂醛时产生的副产物苯基戊二烯醛、苯甲醇、丁香酚以及与合成原料有关的二氯甲苯等特有杂质，可作为检出掺入天然桂油中合成肉桂醛的判据。实验表明，商品桂油只需一次常规的气相色谱／质谱测定，即能迅速简便地同时或逐一筛检上述各杂质。此法可检出掺入桂油中低至０．５％的合成肉桂醛。
A total of 22 components such as cinnamaldehyde in Guangdong natural oleoresin were identified by gas chromatography/mass spectrometry. Several synthetic cinnamic aldehyde samples from different sources were analyzed. They contain by-product phenyls produced from synthetic cinnamaldehyde that are not found in natural oleoresins. Specific impurities such as pentadienal, benzyl alcohol, eugenol, and dichlorotoluene related to synthetic raw materials can be used as a criterion for the detection of synthetic cinnamaldehyde incorporated into natural cinnamon oil. Experiments have shown that commercial cinnamon oil requires only a conventional gas chromatography/mass spectrometry to determine the above impurities at the same time or one by one. This method can detect as low as 0.5% of synthetic cinnamaldehyde incorporated into cassia oil.