NDLI: A gas-phase biosensor for environmental monitoring of formic acid: laboratory and field validation

Content Provider	Royal Society of Chemistry (RSC)
Author	Levin, Jan-Olof Turner, Anthony P. F. Sunesson, Anna-Lena Sandström, K. J. Mattias
Copyright Year	2003
Abstract	In order to encourage more exposure measurements to be performed, a formic acid gas-phase biosensor has been developed for this purpose. In the present paper, an enzyme based biosensor has been validated with respect to analyte selectivity and on-site use. To ensure that the sampler developed measures the compound of interest the biosensor was exposed to three near structural homologues to formic acid, i.e. acetic acid, methanol and formaldehyde. These vapours were generated with and without formic acid and the only compound that was found to have an effect on the performance of the biosensor, albeit a small one, was acetic acid. The field test was performed in a factory using formic acid-containing glue for glulam products. In parallel to the measurements with the biosensor a well defined reference method was used for sampling and analysing formic acid. It was found that the biosensor worked satisfactorily in this environment when used in a stationary position. It was also shown that the biosensor could determine formic acid vapour concentrations down to 0.03 mg m−3.
Starting Page	477
Ending Page	482
Page Count	6
File Format	HTM / HTML PDF
ISSN	14640325
Volume Number	5
Issue Number	3
Journal	Journal of Environmental Monitoring
DOI	10.1039/b209049j
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Acid Biosensor Enzyme Analyte Sampler album Methanol Formaldehyde
Content Type	Text
Resource Type	Article
Subject	Public Health, Environmental and Occupational Health Management, Monitoring, Policy and Law

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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