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Determination of solvents permeating through chemical protective clothing with a microsensor array.

Authors
Park-J; Zellers-ET
Source
J Environ Monit 2000 Aug; 2(4):300-306
NIOSHTIC No.
20029876
Abstract
The performance of a novel prototype instrument in determining solvents and solvent mixtures permeating through samples of chemical protective clothing (CPC) materials was evaluated. The instrument contains a mini-preconcentrator and an array of three polymer-coated surface-acoustic-wave (SAW) microsensors whose collective response patterns are used to discriminate among multiple permeants. Permeation tests were performed with a 2.54 cm diameter test cell in an open-loop configuration on samples of common glove materials challenged with four individual solvents, three binary mixtures, and two ternary mixtures. Breakthrough times, defined as the times required for the permeation rate to reach a value of 1 microg cm(-2) min(-1), determined by the instrument were within 3 min of those determined in parallel by manual sampling and gas chromatographic analysis. Permeating solvents were recognized (identified) from their response patterns in 59 out of 64 measurements (92%) and their vapor concentrations were quantified to an accuracy of +/- 31% (typically +/- 10%). These results demonstrate the potential for such instrumentation to provide semi-automated field or bench-top screening of CPC permeation resistance.
Keywords
Organic-vapors; Detectors; Analytical-instruments; Acoustic-signals; Screening-methods; Solvents
Contact
Environmental & Indust Health University of Michigan 1420 Washington Heights Ann Arbor, MI 48109-2029
CODEN
JEMOFW
CAS No.
127-18-4; 79-01-6; 76-38-0
Publication Date
20000801
Document Type
Journal Article
Funding Amount
310921
Funding Type
Grant
Fiscal Year
2000
NTIS Accession No.
NTIS Price
Identifying No.
Grant-Number-R01-OH-03332
Issue of Publication
4
ISSN
1464-0325
Priority Area
Grants-other
Source Name
Journal of Environmental Monitoring
State
ME; MI
Performing Organization
University of Michigan at Ann Arbor, Ann Arbor, Michigan
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