气相色谱－质谱法测定环保橡胶油中的多环芳烃

建立了环保橡胶油中多环芳烃的气相色谱／质谱（GC／MS）测定方法。样品经环已烷－二甲基亚砜两次萃取，硅胶固相萃取柱净化后，用GC／MS分离测定。优化了8种多环芳烃（PAHs）化合物的分离测定条件。结果8种PAHs回收率范围为62％－94％，日内（11=5）相对标准偏差为3．72％～6．91％。方法具有灵敏度高、准确度好、能同时分离测定8种多环芳烃化合物的优点，适合于芳烃油中多环芳烃化合物的测定。

Determination of Polycyclic Aromatic Hydrocarbons in Non- carcinogenic Rubber Oil by Gas Chromatography -Mass Spectrometry

A method for the determination of polycyclic aromatic hydrocarbons(PAHs) in non-carcinogenic rubber oil by gas chromatography-mass spectrometry has been established.The samples were extracted twice with cyclohexane/ dimethyl sulfoxide and then cleaned up by the cleanert silica-SPE columns.Finally,8 PAHs in the samples were separated and quantified by the proposed method.The recoveries of the method ranged from 62% to 94% and the relative standard deviations were 3.72%~6.91%.This method is sensitive,accurate and suitable to the determination of PAHs in non-carcinogenic rubber oil.