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Amperometric biosensor for formic acid in air

By K. J. Mattias Sandström, Jeffrey D. Newman, Anna-Lena Sunesson, Jan-Olof Levina and Anthony P. F. Turner

Abstract

The possibility of developing a simple, inexpensive and specific personal passive ”real-time” air sampler based on biosensor technology was investigated. Formic acid was used as a model substance. The sensor is based on the enzymatic reaction between formic acid and formate dehydrogenase with NAD+ as a cofactor and Meldola’s blue as mediator. An effective way to immobilise the enzyme, cofactor and Meldola’s blue on screen-printed electrodes was found to be in a mixture of glycerol and phosphate buffer covered with a gas-permeable membrane. When the sensor was introduced into an atmosphere containing formic acid, it gave a distinct and rapid amperometric response

Publisher: Elsevier
Year: 2000
DOI identifier: 10.1016/S0925-4005(00)00566-9
OAI identifier: oai:dspace.lib.cranfield.ac.uk:1826/804
Provided by: Cranfield CERES
Journal:

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Citations

  1. (1997). A diffusion tube sampler for the determination of acetic acid and formic acid vapours in museum cabinets, doi
  2. Ag / AgCl C. Insulation layer D. Final sensor Counter electrode Working electrode Reference electrode Insulation layer
  3. (1999). Biosensors in air monitoring, doi
  4. (1985). Determination of organic acids (C1-C10) in atmosphere, motor exhausts, and engine oils, doi
  5. (1993). Determination of volatile amines in air by diffusive sampling, thiourea formation and high-performance liquid chromatography, doi
  6. (1994). Diffusive sampling of reactive compounds - A review, Analyst, doi
  7. (1995). Evaluation of adsorbents for sampling and quantitative analysis of microbial volatiles using thermal desorption-gas chromatography, doi
  8. (1999). Evaluation of two adsorbents for diffusive sampling and thermal desorption-gas chromatographic analysis of monoterpenes in air, doi
  9. (1983). Farmers' exposure to formic acid vapor in silage making, doi
  10. (2011). Formic acid, doi
  11. (1995). Gas-phase microbiosensor for monitoring phenol vapor at ppb levels, doi
  12. (1995). Laboratory validation of a diffusive sampler for the determination of glutaraldehyde in air, doi
  13. Sampling and analysis of formic acid in methanol vehicle exhaust, Final report, Coordinating Research Council, Report no.
  14. (1994). Sol-Gel encapsulation methods for biosensors, doi
  15. (1998). TVLs and BELs Threshold limit values for chemical substances and physical agents. Biological exposure indices,
  16. (1996). Validation of a diffusive sampler for the determination of acetaldehyde in air, Analyst, doi

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