Determination of polycyclic aromatic hydrocarbons (PAHs) in particulate matter collected with low volume samplers

被引:41
作者
Bruno, Paolo [1 ]
Caselli, Maurizio [1 ]
de Gennaro, Gianluigi [1 ]
Tutino, Maria [1 ]
机构
[1] Univ Bari, Dipartimento Chim, I-70126 Bari, Italy
关键词
PAHs; PTV; MAE; inert ion sources; particulate matter; PM; 2.5;
D O I
10.1016/j.talanta.2007.01.043
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
The determination of polycyclic aromatic hydrocarbons (PAHs) contained in samples of particulate matter (PM), collected with low volume pumps, were carried out with an high sensitivity method that comes from several revisions of a previous method. The present work describes how, by using programmable temperature vaporization (PTV) and a mass selective detector with inert ionic source for the GC-MS analysis and the modifications of microwave-assisted extraction (MAE), the sensitivity of the method can be increased. The PAHs chosen for testing the method are: benzo[a]anthracene (BaA), benzo[b]fluoranthene (BbF), benzo[k]fluoranthene (BkF), benzo[a]pyrene (BaP), indeno[1,2,3-cd]pyrene (Ip) and dibenzo[a,h]anthracene (DbA). They, in fact, belong to that group of substances that are the most harmful for human health for their carcinogenicity. PAHs recoveries for spiked standard solutions at different concentrations were between 95 and 100% with relative standard deviation ranging from 1 to 3%. The revised method was validated using a 1649a urban dust standard reference material (SRM). The results obtained were in good agreement with certified values. The high sensitivity of the method allows to carry out analyses using only a half of the sampled filter (usually 47 mm diameter membranes). In this way, the other half can be used for the characterization of the other components of PM (heavy metals, organic carbon, ions, etc). The last step has been constituted by application of the optimized method on real samples collected in two cities located in Southern Italy (Bari and Taranto). (C) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码:1357 / 1361
页数:5
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