| 毛细管气相色谱-负离子化学电离源质谱法测定空气颗粒物中的硝基多环芳烃 |
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| 引用本文： | 孙新熙,郭家珍,黎先春.毛细管气相色谱-负离子化学电离源质谱法测定空气颗粒物中的硝基多环芳烃[J].环境化学,1999(6). |
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| 作者姓名： | 孙新熙 郭家珍 黎先春 |
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| 作者单位： | 冶金部建筑研究总院环境保护研究所，冶金部建筑研究总院环境保护研究所，香港浸会大学化学系 北京，100088，北京，100088 |
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| 摘 要： | 本文用毛细管气相色谱-负离于化学电离源质谱法（GC-NICIMS）测定了空气颗粒物中的硝基多环芳烃（NO_2-PAH）、通过与标准物的保留时间和质谱图的比较,确定空气颗粒物中含有四种NO_2-PAH,它们是2-硝基芴,9-硝基蒽,1-硝基芘和2-硝基萤蒽,用同一样品进行了毛细管气相色谱正离子电子轰击源质谱分析（GC-EIPIMS）,并与GC-NICIMS进行了比较,结果表明,GC-NICIMS对于NO_2PAH的测定具有较高的选择性和灵敏度,用内标法定量使GC-NICIMS测定结果的精密度得到改善。
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| 关 键 词： | 大气颗粒物 硝基多环芳烃 GC-NICIMS |
DETERMINATION OF NITRO-POLYCYCLIC AROMATIC HYDROCARBONS IN URBAN AIR PARTICULATES BY GAS CHROMATOGRAPHY-NEGATIVE ION CHEMICAL IONIZATION MASS SPECTROMETRY |
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| Sun Xinxi,Guo Jiazhen.DETERMINATION OF NITRO-POLYCYCLIC AROMATIC HYDROCARBONS IN URBAN AIR PARTICULATES BY GAS CHROMATOGRAPHY-NEGATIVE ION CHEMICAL IONIZATION MASS SPECTROMETRY[J].Environmental Chemistry,1999(6). |
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| Authors: | Sun Xinxi Guo Jiazhen |
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| Abstract: | Gas chromatography-negative chemical ionization mass spectrometry (GC-NICIMS) was employed to determine nitro-polycyclic aromatic hydrocarbons (NO2-PAHs) in urban air particulates. Four NO2-PAHs, 2-nitrofluorene, 9-nitroanthracene, 2-nitrofluoranthrene, 1-nitropyrene, were identified by comparing their retention time and mass spectra with standards. The same air particulates sample was analyzed by gas chromatography-electron impact positive ion mass spectrometry (GC-EIPIMS). The comparison between GC-NICIMS and GC-EIPIMS shows that the GC-NICIMS has better sensitivity and selectivity than GC-EIPIMS for determining of NO2-PAHs. Internal standard quantification method can improve the precision of GC-NICIMS analysis. |
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| Keywords: | urban air particulate nitro-polycyclic aromatic hydrocarbons GC-NICIMS |
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