分析化学Issue(7)：931-936,6.DOI:10.11895/j.issn.0253-3820.131094
热解析-气相色谱或气相色谱-质谱法分析大气可吸入颗粒物中的半挥发性有机化合物
Thermal Desorption-Gas Chromatography or Gas Chromatograph-Mass Spectrometry for Analysis of Semi-Volatile Compounds on Atmospheric Particulate Matters
摘要
Abstract
A thermal desorption ( TD) device was developed and coupled to gas chromatography ( GC) or gas chromatography-mass spectrometry ( GC-MS ) for the qualitative and quantitative analysis of semi-volatile organic compounds on atmospheric particulate matters ( PM ) . The TD was operated by direct heating and placed on the GC injector, leading to high heating rate and easy transfer of analytes to GC without focusing of analytes by cold trap. For establishing the TD-GC method, the materials used for supporting PM samples, temperature and time of thermal desorption, and types of sample injection were investigated for detection of sixteen polycyclic aromatic hydrocarbons ( PAHs) and nine n-alkanes. The limits of detection of the proposed TD-GC method were in the range of 0. 014-0. 093 ng for PAHs, and 0. 016-0. 026 ng for n-alkanes, respectively, with the correlation coefficients of correlation above 0. 9975. The TD-GC method was applied to the determination of trace PAHs and n-alkanes on PM10 samples from three cities. The recoveries were in the range of 95%-135% ( PAHs) and 95%-115% ( n-alkanes) , respectively. Finally, the TD was coupled to GC-MS for comparison of the contents of PAHs and n-alkanes on PMx with different particulate size ( x=10 , 5, 2, 1, 0. 5, 0. 25, 0. 1).关键词
大气颗粒物/半挥发性有机化合物/热解析/PM2. 5Key words
Atmospheric particulate matter/Semi-volatile organic compound/Thermal desorption/Particulate matter 2.5引用本文复制引用
孟虎,赵景红,段春凤,郝亮,关亚风..热解析-气相色谱或气相色谱-质谱法分析大气可吸入颗粒物中的半挥发性有机化合物[J].分析化学,2014,(7):931-936,6.基金项目
本文系863计划(Nos.2003AA641030,2007AA06Z419),国家自然科学基金项目(No.20575068)资助@@@@This work was supported by the 863 Program (Nos.2003AA641030,2007AA06Z419) and the National Nature Science Foundation of China ( No.20575068) （Nos.2003AA641030,2007AA06Z419）
