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Feasibility of analyzing fine particulate matter in air using solid-phase extraction membranes and dynamic subcritical water extraction
Stockholm Univ, Dept Analyt Chem, Arrhenius Labs Nat Sci, S-10691 Stockholm, Sweden..ORCID-id: 0000-0001-6950-1506
Stockholm Univ, Dept Appl Environm Sci ITM, S-10691 Stockholm, Sweden..
Ansvarlig organisasjon
2008 (engelsk)Inngår i: Analytical Chemistry, ISSN 0003-2700, E-ISSN 1520-6882, Vol. 80, nr 9, s. 3159-3167Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

We have evaluated the feasibility of using Empore solid-phase extraction (SPE) membranes as an alternative to conventional techniques for sampling fine airborne particulate matter (PM), including nanoparticles, utilizing a scanning mobility particle sizer (SMPS) and a condensation particle counter to evaluate their efficiency for trapping fine particles in the 10-800 nm size range. The results demonstrate that the membranes can efficiently trap these particles and can then be conveniently packed into an extraction cell and extracted under matrix solid-phase dispersion (MSPD) conditions. The potential utility of sampling PM using Empore membranes followed by dynamic subcritical water extraction (DSWE) for fast, efficient, class-selective extraction of polycyclic aromatic hydrocarbons (PAHs) associated with the particles, prior to changing the solvent and analysis by GC/MS, was then explored. The performance of the method was tested using National Institute of Standards and Technology (NIST)-certified "urban dust" reference material (SRM 1649a) and real samples collected at a site in central Rome with heavy road traffic. ne method appears to provide comparable extraction efficiency to that of conventional techniques and with using GC/MS, detection limits ranged in the few picograms per cubic meter level. Sampling PM by Empore membranes may reduce the risks of losses of semivolatile compounds, while allowing relatively high sampling flow rates and safe sample storage. Moreover, the combination of MSPD with DSWE permits specific fractions of the PM components to be eluted, thereby generating clean extracts and reducing both analysis time and sample manipulation.

sted, utgiver, år, opplag, sider
2008. Vol. 80, nr 9, s. 3159-3167
Forskningsprogram
SWEDARCTIC 2006, Zeppelin; SWEDARCTIC 2007, Zeppelin 2007
Identifikatorer
URN: urn:nbn:se:polar:diva-2314DOI: 10.1021/ac7021458ISI: 000255471900016PubMedID: 18393539OAI: oai:DiVA.org:polar-2314DiVA, id: diva2:858285
Konferanse
Pittsburgh 2005 Conference (Pittcon), FEB 27-MAR 04, 2005, Orlando, FL
Tilgjengelig fra: 2015-10-01 Laget: 2015-10-01 Sist oppdatert: 2017-12-01

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