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A simple methodological validation of the gas/particle fractionation of polycyclic aromatic hydrocarbons in ambient air

Title
A simple methodological validation of the gas/particle fractionation of polycyclic aromatic hydrocarbons in ambient air
Author
김기현
Keywords
VOLATILE ORGANIC-COMPOUNDS; CHROMATOGRAPHY-MASS-SPECTROMETRY; THERMAL-DESORPTION GC/MS; PAHS; URBAN; CHINA; SITE; UK; CITY
Issue Date
2015-07
Publisher
NATURE PUBLISHING GROUP
Citation
SCIENTIFIC REPORTS, v. 5, NO 11679, Page. 1-12
Abstract
The analysis of polycyclic aromatic hydrocarbons (PAH) in ambient air requires the tedious experimental steps of both sampling and pretreatment (e.g., extraction or clean-up). To replace pre-existing conventional methods, a simple, rapid, and novel technique was developed to measure gas-particle fractionation of PAH in ambient air based on 'sorbent tube-thermal desorption-gas chromatograph-mass spectrometer (ST-TD-GC-MS)'. The separate collection and analysis of ambient PAHs were achieved independently by two serially connected STs. The basic quality assurance confirmed good linearity, precision, and high sensitivity to eliminate the need for complicated pretreatment procedures with the detection limit #16 PAHs: 13.1 +/- 7.04 pg#. The analysis of real ambient PAH samples showed a clear fractionation between gas #two-three ringed PAHs# and particulate phases #five-six ringed PAHs#. In contrast, for intermediate #four ringed# PAHs #fluoranthene, pyrene, benz[a] anthracene, and chrysene#, a highly systematic/gradual fractionation was established. It thus suggests a promising role of ST-TD-GC-MS as measurement system in acquiring a reliable database of airborne PAH.
URI
http://www.nature.com/articles/srep11679?message-global=remove&WT.ec_id=SREP-639%2C638-20150707&spMailingID=49041642&spUserID=ODkwMTM2NjQzMQS2&spJobID=720800188&spReportId=NzIwODAwMTg4S0http://hdl.handle.net/20.500.11754/26628
ISSN
2045-2322
DOI
10.1038/srep11679
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > CIVIL AND ENVIRONMENTAL ENGINEERING(건설환경공학과) > Articles
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