dc.contributor.author |
Forbes, Patricia B.C.
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dc.contributor.author |
Rohwer, Egmont Richard
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dc.date.accessioned |
2010-02-22T07:31:42Z |
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dc.date.available |
2010-02-22T07:31:42Z |
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dc.date.issued |
2009-04 |
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dc.description.abstract |
A novel analytical method for atmospheric polycyclic aromatic hydrocarbons (PAHs) was developed based on laser induced fluorescence (LIF) of samples on quartz multi-channel polydimethylsiloxane traps. A tunable dye laser with a frequency doubling crystal provided the excitation radiation, and a double monochromator with a photomultiplier tube detected emitted fluorescence. The method allowed for the rapid (<5 min), cost effective analysis of samples. Those yielding interesting results could be further analysed by direct thermal desorption-gas chromatography–mass spectrometry (TD–GC–MS, with limits of detection of w0.3 ngm_3), as photodegradation was minimal (<10% over 5 min irradiation). Small amounts of naphthalene photodegradation products identified by TD–GC–MS after >15 min irradiation, included phenol, benzyl alcohol and phthalic anhydride. Without any signal optimization, a LIF detection limit of w1 mgm_3 was established for naphthalene using a diffusion tube (diffusion rate of 2 ng s_1) and 292 nm excitation. |
en |
dc.identifier.citation |
Forbes, PBC & Rohwer, ER 2009, ‘Investigations into a novel method for atmospheric polycyclic aromatic hydrocarbon monitoring’, Environmental Pollution, doi: 10.1016/j.envpol.2009.03.004 |
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dc.identifier.issn |
0269-7491 |
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dc.identifier.other |
10.1016/j.envpol.2009.03.004 |
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dc.identifier.uri |
http://hdl.handle.net/2263/13177 |
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dc.language.iso |
en |
en |
dc.publisher |
Elsevier |
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dc.rights |
Elsevier |
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dc.subject |
Laser induced fluorescence |
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dc.subject |
Atmospheric monitoring |
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dc.subject.lcsh |
Polycyclic aromatic hydrocarbons |
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dc.subject.lcsh |
Photodegradation |
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dc.subject.lcsh |
Polydimethylsiloxane |
en |
dc.title |
Investigations into a novel method for atmospheric polycyclic aromatic hydrocarbon monitoring |
en |
dc.type |
Postprint Article |
en |