1988 Volume 4 Issue 5 Pages 497-500
An enzyme sensor for L-α-glycerophosphate was prepared by covalent fixation of glycerophosphate oxidase and peroxidase by use of bovine serum albumin and glutaraldehyde onto a glassy carbon electrode silanized with 3-aminopropyl triethoxysilane. The sensor showed good linear current responses in the range of 5 to 100μM glycerophosphate (γ=0.999, n=7); the response time was about 20s. The sensor was stable for at least 60d. Sugar phosphates did not have any appreciable effect on the response of the sensor, but reducing materials such as L-ascorbic acid and L-cysteine gave some errors that changed with concentrations.