Use of carbon adsorption traps combined with high resolution gas chromatography – mass spectrometry for the analysis of polar and non‐polar C4‐C14 hydrocarbons involved in photochemical smog formation
Use of carbon adsorption traps combined with high resolution gas chromatography – mass spectrometry for the analysis of polar and non‐polar C4‐C14 hydrocarbons involved in photochemical smog formation
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使用碳吸附捕集器结合高分辨率气相色谱-质谱分析参与光化学烟雾形成的极性和非极性 C4-C14 碳氢化合物
DOI：
10.1002/jhrc.1240150205
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发表时间：
1992
期刊：
影响因子：
--
通讯作者：
A. Liberti
中科院分区：
文献类型：
--
作者：
P. Ciccioli;A. Cecinato;E. Brancaleoni;M. Frattoni;A. Liberti
已经开发出一种收集和分析参与光化学烟雾形成的极性和非极性 C4-C14 碳氢化合物的方法。通过填充不同表面积的碳吸附剂的三级捕集器，实现了污染区和未污染区碳氢化合物的富集；然后，使用采用冷冻聚焦的自制解吸装置就可以通过 HRGC-FID 来测定化合物。在 GC-MS 鉴定和定量产生重叠峰的化合物之前，已使用填充有石墨碳的两级捕集器。
该方法已在罗马市区和松树林中进行了测试，对 140 多种不同的化合物进行了鉴定和定量。许多成分被发现是氧化的，要么是由光化学反应形成的，要么是人为来源的。
A method has been developed for the collection and analysis of polar and non-polar C4-C14 hydrocarbons involved in the formation of photochemical smog. Enrichment of hydrocarbons from both polluted and unpolluted areas has been achieved with three-stage traps packed with carbon adsorbents of different surface area; the use of a home-made desorption unit employing cryofocusing then enables the determination of the compounds by HRGC-FID. Two-stage traps filled with graphitic carbon have been used prior to GC-MS identification and quantitation of compounds producing overlapping peaks.
The methodology has been tested in the urban area of Rome and in a pine forest, and more than 140 different compounds identified and quantitated. Many of the constituents were found to be oxygenated, either formed by photochemical reactions or of anthropogenic origin.