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Meso-scale VOC-mixture analyzer with tunable separation and microsensor array detection.

Authors
Zhong-Q; Steinecker-WH; Zellers-ET
Source
Rare Metal Mater Eng 2006; 35(Suppl 3):61-64
NIOSHTIC No.
20042742
Abstract
A novel portable instrument developed for field determinations of complex mixtures of volative organic compounds (VOCs) is described. The key features of the instrument are a miniature multi-state absorbent preconcentrator/focuser, two series-coupled separation columns with pressure and temperature tunable retention control, and an integrated array of four chemiresistor (CR) sensors coated with Au-thiolate monolayer-protected nanoparticles (MPN). MPN-CR array response patterns are used with retention times to identify eluting vapors. Air is used as the carrier gas. Calilbrations of 20 common indoor air contaminants gave T.ODs in the range of 0.05 ng/g-0.53 ng/g for a 1 L sample volume. Results of preliminary analyses of characteristic VOCs generated from U.S. currency as well as vapor-phase markers of environmental tobacco smoke (ETS) at low- or sub- ng/g levels are presented.
Keywords
Volatiles; Organic-compounds; Analytical-processes; Nanotechnology; Gases; Air-contamination; Environmental-exposure; Environmental-contamination; Tobacco-smoke; Gas-chromatography; Laboratory-testing; Author Keywords: microsensor; gas chromatography; nanoparticle; sensor array; protable; ETS;
Contact
Edward T. Zellers, Department of Environmental Health Sciences, Unversity of Michigan, 109 S. Observatory St., Ann Arbor, MI 48109-2029
Publication Date
20061201
Document Type
Journal Article
Email Address
ezeller@umich.edu
Funding Type
Grant
Fiscal Year
2007
NTIS Accession No.
NTIS Price
Identifying No.
Grant-Number-R01-OH-003692
ISSN
1875-5372
Source Name
Rare Metal Materials and Engineering
State
MI
Performing Organization
University of Michigan, Ann Arbor
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