论文部分内容阅读
A highly selective nitric oxide(NO) sensor is fabricated and applied to devise an enhanced flow injection analysis(FIA) system for S-nitrosothiols(RSNOs) measurement in biological samples.The NO sensor is prepared using a polytetrafluoroethylene(PTFE) gas-permeable membrane loaded with Teflon AF? solution,a copolymer of tetrafluoroethylene and 2,2-bis(trifluoroethylene)-4,5-difluoro -l,3-dioxole,to improve selectivity.This method is much simpler and possesses good performance over a wide range of RSNOs concentrations.Standard deviation for three parallel measurements of blood plasma is 4.0%.The use of the gas sensing configuration as the detector enhances selectivity of the FIA measurement vs.using less selective electrochemical detectors that do not use PTFE/Teflon type outer membranes.
A highly selective nitric oxide (NO) sensor is fabricated and applied to devise an enhanced flow injection analysis (FIA) system for S-nitrosothiols (RSNOs) measurement in biological samples. The NO sensor is prepared using a polytetrafluoroethylene (PTFE) gas- membrane loaded with Teflon AF® solution, a copolymer of tetrafluoroethylene and 2,2-bis (trifluoroethylene) -4,5-difluoro-l, 3-dioxole, to improve selectivity. This method is much simpler and possesses good performance over a wide range of RSNOs concentrations. Standard deviation for three parallel measurements of blood plasma is 4.0%. The use of the gas sensing configuration as the detector enhances selectivity of the FIA measurement vs.using less selective electrochemical detectors that do not use PTFE / Teflon type outer membranes.