Characterization of polycyclic aromatic hydrocarbons and carbonyl compounds in diesel exhaust emissions

被引：14

作者：

Mabilia, R ^{[1
]}

Cecinato, A ^{[1
]}

Scianò, MCT ^{[1
]}

Di Palo, V ^{[1
]}

Possanzini, M ^{[1
]}

机构：

[1] CNR, Ist Inquiamento Atmosferico, I-00016 Monterotondo, RM, Italy

来源：

ANNALI DI CHIMICA | 2004年 / 94卷 / 9-10期

关键词：

D O I：

10.1002/adic.200490091

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Exhaust emissions from a recent model heavy-duty diesel vehicle (city bus) in a chassis dynamometer were measured during a transient driving cycle. Particle-bound polycyclic aromatic hydrocarbons (PAHs) and gaseous carbonyls, substances that create health hazards and are, as yet, unregulated were collected, the former on filters and the latter on dinitrophenylhydrazine (DNPH)-coated silica cartridges and analysed by GC-MS and HPLC, respectively. PAH emission rates decreased with the number of benzene fused rings. They averaged 0.2 mg km(-1) for a total of 11 PAHs ranging from fluoranthene to benzo(ghi)perylene. Fluoranthene and pyrene accounted for 90% of total PAHs. The sum of emission rates of C(1)similar toC(6) carbonyls averaged 174 mg km(-1), even if formaldehyde alone represented similar to70% of the total carbonyl mass, followed by acetaldehyde (13%). Results obtained were compared with emission data reported in previous studies.

引用

页码：733 / 740

页数：8

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