Determination of aromatic hydrocarbons in urban air of Rome
Determination of aromatic hydrocarbons in urban air of Rome
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DOI：
10.1016/s1352-2310(96)00226-9
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发表时间：
1997-02-01
影响因子：
5
通讯作者：
Ventrone, I
中科院分区：
文献类型：
--
作者：
Brocco, D;Fratarcangeli, R;Ventrone, I
1992-1993年在罗马用差示光学吸收光谱仪(DOAS)和自动气相色谱仪(VOC分析仪)测定了芳香烃。芳香烃的平均分布为：苯12.6%，甲苯35.4%，残留物42%。甲苯的年平均浓度(128和138微克米~(-3))是苯(40和47微克米(-3))的2-3倍。芳香烃的最高浓度是在冬季停滞期间测得的。芳香烃的昼夜行为表明，汽车尾气排放是其主要来源。讨论了苯和甲苯在光化学烟雾事件中的不同反应活性。版权所有(C)1996爱思唯尔科学有限公司
Aromatic hydrocarbons were measured in Rome during 1992-1993 by means a differential optical absorption spectrometer (DOAS) and an automatic gas chromatograph (VOC analyzer). The mean distribution of aromatic hydrocarbons was: benzene 12.6%, toluene 35.4%, and remaining species 42%. The mean yearly concentrations of toluene (128 and 138 mu g m(-3)) were 2-3 times higher than those of benzene (40 and 47 mu g m(-3)). The highest concentrations of aromatic hydrocarbons were measured during the stagnant winter period. The diurnal behavior of aromatic hydrocarbons suggests that motor exhaust emissions are their dominant source. The different reactivities of benzene and toluene during photochemical smog episodes were discussed. Copyright (C) 1996 Elsevier Science Ltd