A novel chemiluminescence(CL) biosensor for the determination of oxalate is presented in this paper. It is based on the CL reaction between luminol, immobilized on an anion-exchange column, and hydrogen peroxide gener...A novel chemiluminescence(CL) biosensor for the determination of oxalate is presented in this paper. It is based on the CL reaction between luminol, immobilized on an anion-exchange column, and hydrogen peroxide generated on-linevia oxalate by the catalytic effect of oxalate oxidase in spinach in the flow cell. The biosensor responds linearly to oxalate concentration in the range of 4 0×10^-7 to 1 0×10^-4 mol/L, and the detection limit is 2×10^-7 mol/L. A complete analysis could be performed in 1 min with a relative standard deviation of 3 7% for 1 0×10^-5 mol/L oxalate(n=7). The system is stable for over 200 times determinations and has been applied in urine samples.展开更多
文摘A novel chemiluminescence(CL) biosensor for the determination of oxalate is presented in this paper. It is based on the CL reaction between luminol, immobilized on an anion-exchange column, and hydrogen peroxide generated on-linevia oxalate by the catalytic effect of oxalate oxidase in spinach in the flow cell. The biosensor responds linearly to oxalate concentration in the range of 4 0×10^-7 to 1 0×10^-4 mol/L, and the detection limit is 2×10^-7 mol/L. A complete analysis could be performed in 1 min with a relative standard deviation of 3 7% for 1 0×10^-5 mol/L oxalate(n=7). The system is stable for over 200 times determinations and has been applied in urine samples.
