Sandström, K. J. MattiasNewman, Jeffrey D.Sunesson, Anna-LenaLevina, Jan-OlofTurner, Anthony P. F.2005-11-232005-11-232000-11-01K. J. Mattias Sandström, Jeffrey Newman, Anna-Lena Sunesson, Jan-Olof Levina, and Anthony P. F. Turner, Amperometric biosensor for formic acid in air, Sensors and Actuators B, Volume 70, Issues 1-3, 1 November 2000, Pages 182-1870925-4005http://hdl.handle.net/1826/804http://dx.doi.org/10.1016/S0925-4005(00)00566-9The 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.1946 bytes257495 bytestext/plainapplication/pdfenArticle