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Determination of levoglucosan in atmospheric fine particulate matter.

Authors
Simpson-CD; Dills-RL; Katz-BS; Kalman-DA
Source
J Air Waste Manage Assoc 2004 Jun; 54(6):689-694
NIOSHTIC No.
20029391
Abstract
A microanalytical method suitable for the quantitative determination of the sugar anhydride levoglucosan in low-volume samples of atmospheric fine particulate matter (PM) has been developed and validated. The method incorporates two sugar anhydrides as quality control standards. The recovery standard sedoheptulosan (2,7-anhydro-beta-D-altro-heptulopyranose) in 20 microL solvent is added onto samples of the atmospheric fine PM and aged for 1 hr before ultrasonic extraction with ethylacetate/ triethylamine. The extract is reduced in volume, an internal standard is added (1,5-anhydro-D-mannitol), and a portion of the extract is derivatized with 10% by volume N-trimethylsilylimidazole. The derivatized extract is analyzed by gas chromatography/mass spectrometry (GC/MS). The recovery of levoglucosan using this procedure was 69 +/- 6% from five filters amended with 2 microg levoglucosan, and the reproducibility of the assay is 9%. The limit of detection is approximately 0.1 microg/mL, which is equivalent to approximately 3.5 ng/m3 for a 10 L/min sampler or approximately 8.7 ng/m3 for a 4 L/min personal sampler (assuming 24-hr integrated samples). We demonstrated that levoglucosan concentrations in collocated samples (expressed as ng/m3) were identical irrespective of whether samples were collected by PM with aerodynamic diameter < or = 2.5 microm or PM with aerodynamic diameter < or = 10 microm impactors. It was also demonstrated that X-ray fluorescence analysis of samples of atmospheric PM, before levoglucosan determinations, did not alter the levels of levoglucosan.
Keywords
Wood; Fuels; Organic-compounds; Phenolic-compounds; Particulates; Gas-chromatography; Mass-spectrometry; Sampling; Air-quality-monitoring; Air-quality; Phenols
Contact
Department of Environmental and Occupational Health Sciences, School of Public Health and Community Medicine, University of Washington, Seattle, Washington 98195
CODEN
AIWAE2
Publication Date
20040601
Document Type
Journal Article
Email Address
simpson1@u.washington.edu
Funding Type
Grant
Fiscal Year
2004
NTIS Accession No.
NTIS Price
Identifying No.
Grant-Number-R03-OH-007656
Issue of Publication
6
ISSN
1096-2247
Source Name
Journal of the Air and Waste Management Association
State
WA
Performing Organization
Department of Environmental and Occupational Health Sciences, University of Washington
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