Sulfite determination using sulfite oxidase biosensor based glassy carbon electrode coated with thin mercury film


Dinckaya E. , SEZGINTURK M. K. , Akyilmaz E. , Ertas F. N.

FOOD CHEMISTRY, vol.101, no.4, pp.1540-1544, 2007 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 101 Issue: 4
  • Publication Date: 2007
  • Doi Number: 10.1016/j.foodchem.2006.04.006
  • Title of Journal : FOOD CHEMISTRY
  • Page Numbers: pp.1540-1544

Abstract

The preparation of sulfite biosensor by immobilization of sulfite oxidase on a glassy carbon electrode coated with mercury thin film is described. Dissolved oxygen can be readily reduced at the glassy carbon electrode coated with mercury thin film. The working principle of the biosensor was based on monitoring decrease in the peak current due to the depletion in dissolved oxygen concentration according to the reaction of sulfite oxidase.