A Thermal Desorption-Proton Transfer Reaction-Quadrupole Interface Time-of-Flight Mass Spectrometer for Online Analysis of Organic Aerosol: Response Evaluations Using Single Component Particles
A Thermal Desorption-Proton Transfer Reaction-Quadrupole Interface Time-of-Flight Mass Spectrometer for Online Analysis of Organic Aerosol: Response Evaluations Using Single Component Particles
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用于在线分析有机气溶胶的热脱附-质子转移反应-四极杆界面飞行时间质谱仪：使用单组分颗粒进行响应评估
DOI：
10.11203/jar.34.105
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发表时间：
2019
期刊：
影响因子：
--
通讯作者：
下野 彰夫
中科院分区：
文献类型：
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作者：
佐藤 圭;Sathiyamurthi RAMASAMY;猪俣 敏;森野 悠;疋田 利秀;下野 彰夫
将质子转移反应-四极杆界面-飞行时间质谱仪与自制的热脱附仪联用，对有机气溶胶颗粒物进行实时分析。使用喷雾器结合微分迁移率分析仪产生尺寸选择的单组分有机颗粒。我们测试了热解吸仪的聚四氟乙烯和铜管。当我们使用聚四氟乙烯管时，观察到更高的信号强度，这表明当使用聚四氟乙烯管时，蒸发的半挥发性有机化合物的壁沉积损失被抑制。质子化分子[M+ H]+在羰基颗粒（即戊二醛颗粒）的质谱中具有最高强度，而质子化分子脱水形成的离子[M+ HH 2 O]+在羧酸颗粒（即己二酸、邻苯二甲酸和顺式-蒎酮酸颗粒）和醇颗粒（即内消旋颗粒）的质谱中具有最高强度。所获得的有机气溶胶标记物的质谱将是有用的解释质谱测量的有机气溶胶粒子的热解吸-质子转移反应-质谱。
A proton transfer reaction-quadrupole interface-time of flight mass spectrometer was combined with a hand-made thermal desorption instrument for real-time analysis of organic aerosol particles. Size-selected single component organic particles were generated using a nebulizer combined with a differential mobility analyzer. We tested Teflon and copper tubing for the thermal desorption instrument. Higher signal intensities were observed when we used Teflon tubing, suggesting that wall deposition loss of vaporized semivolatile organic compounds is suppressed when Teflon tubing is used. Protonated molecules,[M+ H]+, had the highest intensity in the mass spectrum of carbonyl particles (ie, terephthaldialdehyde particles), whereas ions formed by the dehydration from protonated molecules,[M+ HH 2 O]+, had the highest intensities in the mass spectra of carboxylic acid particles (ie, adipic acid, phthalic acid and cis-pinonic acid particles) and alcohol particles (ie, meso-erythritol particles). The mass spectra obtained for organic aerosol markers will be useful to interpret mass spectra measured for organic aerosol particles by thermal desorption-proton transfer reaction-mass spectrometry.