Determination of resin acids during production of wood pellets-a comparison of HPLC/ESI-MS with the GC/FID MDHS 83/2 method
In: Journal of Environmental Monitoring, Jg. 13 (2011), Heft 10, S. 2940-2945
Online
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Zugriff:
Resin acids are constituents of natural and technical products of widespread use. Exposure is known to cause health effects in the airways and on the skin. Liquid chromatography/positive ion electrospray-mass spectrometry (HPLC/pos ESI-MS) was investigated for determination of 7-oxodehydroabietic (7-OXO), dehydroabietic (DHAA) and abietic acid (AA) in wood dust-containing air samples as a derivatisation-free alternative to the GC/FID HSE method 83/2, developed by the Health and Safety Executive UK. The resin acid 7-OXO was measured as a marker for oxidised resin acids, which are known to be the main contact allergens in colophonium. The found detection limits were 0.42 ng m(-3) for 7-OXO, 5.2 ng m(-3) for DHAA and 9.4 ng m(-3) for AA, respectively, which are considerably lower than with the GC/FID method (24, 115 and 89 ng m(-3)). The two methods correlated well, although consistently and significantly lower concentrations of 7-OXO were detected with LC/MS. The higher concentration of this compound with MDHS 83/2 is suggested to be an artefact from the derivatisation step in the presence of soluble wood dust remains.
Titel: |
Determination of resin acids during production of wood pellets-a comparison of HPLC/ESI-MS with the GC/FID MDHS 83/2 method
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Autor/in / Beteiligte Person: | Axelsson, Sara ; Eriksson, Kåre ; Nilsson, Ulrika |
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Zeitschrift: | Journal of Environmental Monitoring, Jg. 13 (2011), Heft 10, S. 2940-2945 |
Veröffentlichung: | 2011 |
Medientyp: | unknown |
ISSN: | 1464-0325 (print) ; 1464-0333 (print) |
DOI: | 10.1039/c0em00543f |
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