激光脱附/电离飞行时间质谱法测定多环芳烃
LASER DESORPTION/IONIZATION TOP MASS SPECTRA OF POLYCYCLIC AROMATIC HYDROCARBONS
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摘要: 采用激光脱附/电离飞行时间质谱技术测定了蒽、(艹屈)、二苯并(a,h)蒽、晕苯四种多环芳烃化合物在266nm激光作用下的“软”电离飞行时间质谱.对蒽、(艹屈)、二苯并(a,h)蒽、晕苯四种化合物进行的分析结果表明激光脱附/电离飞行时间质谱是一种简单、快速、高灵敏度分析多环芳烃化合物的方法,对晕苯,检出限可达10-15mol.Abstract: The "soft"ionization mass spectra of anthracene, chrysene , dibenz [a, h] anthracene and coronene have been studied using pulsed laser desorption/ionization time-of-flight mass spectrometry.The analying results of anthracene,chrysene,dibenz[a,h]anthracene and coronene mixture show that laser desorption/ionization time-of-flight mass spectrometry is one of sensitive methods'for PAH detection.For coronene, the detection limit is 10-15mol.
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