Yassaa Noureddine, Cecinato Angelo
Laboratory of Functional Organic Analysis, Faculty of Chemistry, University of Sciences and Technology, Houari Boumediene, U.S.T.H.B., BP 32, El-Alia, Bab-Ezzouar, 16111 Algiers, Algeria.
Chemosphere. 2005 Sep;60(11):1660-6. doi: 10.1016/j.chemosphere.2005.02.041. Epub 2005 Apr 7.
The absolute contents and relative distributions of organic aerosols [n-alkanes, n-alkanoic and n-alkenoic acids, n-alkan-2-ones and polycyclic aromatic hydrocarbons (PAH)] were determined in torched gases emitted during the crude oil extraction and in the free atmosphere of the Hassi-Messaoud city (Algeria). Monocarboxylic acids, both saturated and monounsaturated (from 9802 to 20,057 ng m(-3)), accounted for the major fraction of the total particulate organic matter identified both in torch exhaust and atmospheric particulate. n-Alkanes were also abundant both in the direct emission (from 460 to 632 ng m(-3)) and city atmosphere (462 ng m(-3)) and displayed a peculiar fingerprint characterised by the presence of a set of branched congeners around even carbon-numbered homologues and a strong even-to-odd predominance along the whole carbon number range (C16-C34). Whilst n-alkan-2-ones were absent in the city and poor in smokes emitted from the torches (from 31 to 42 ng m(-3)), PAH were present at low extents in all sites (from 18 to 65 ng m(-3)). The incomplete thermal combustion of torched crude oil was very likely the main source of these particle-bound organic constituents in the city and its surrounding region.
测定了原油开采过程中火炬气以及阿尔及利亚哈西-迈萨乌德市自由大气中有机气溶胶（正构烷烃、正链烷酸和正链烯酸、正链烷-2-酮和多环芳烃（PAH））的绝对含量和相对分布。一元羧酸，包括饱和的和单不饱和的（9802至20,057 ng m(-3)），在火炬废气和大气颗粒物中鉴定出的总颗粒有机物中占主要部分。正构烷烃在直接排放物（460至632 ng m(-3)）和城市大气（462 ng m(-3)）中也很丰富，并呈现出独特的指纹特征，即在偶数碳数同系物周围存在一组支链同系物，并且在整个碳数范围（C16-C34）内具有强烈的奇偶优势。虽然城市中不存在正链烷-2-酮，火炬排放的烟雾中含量也很低（31至42 ng m(-3)），但多环芳烃在所有地点的含量都很低（18至65 ng m(-3)）。火炬燃烧原油的不完全热燃烧很可能是该市及其周边地区这些颗粒结合有机成分的主要来源。
