In 1.2×10-2 mol/L KH2PO4-Na2HPO4(pH 6.4) supporting electrolyte, the polarographic reduce wave of vitamine B2, with peak potential of -0.43(vs,SCE),can be catalyted by the addition of H2O2, produced a new polarog...In 1.2×10-2 mol/L KH2PO4-Na2HPO4(pH 6.4) supporting electrolyte, the polarographic reduce wave of vitamine B2, with peak potential of -0.43(vs,SCE),can be catalyted by the addition of H2O2, produced a new polarographic catalytic wave. With the help of cyclic voltammogram and UV-VIS spectrogram, we discussed the mechanism of the polarographic catalytic wave. Additionally, the new method to detect vitamine B2 was established, with the linear range of 4.0×10-7mol/L～8.0×10-5 mol/L and the detection limit of 1.5×10-7 mol/L. Further more, the new method was applied to detect vitamine B2 in tablet with satisfactory results.展开更多
The influence on the effectiveness of sterilization by low-temperature plasma sterilizer CASP-80A was investigated so as to provide a theoretical basis for reducing medical costs and achieving ideal sterilization effe...The influence on the effectiveness of sterilization by low-temperature plasma sterilizer CASP-80A was investigated so as to provide a theoretical basis for reducing medical costs and achieving ideal sterilization effectiveness. To conduct the on-site simulation test, a clinical material sterilization test and a test of the influence of organic substance were conducted, the former by using the representative of Bacillus Stearothermophilus, preparing the bacteria-contaminated carrier through polytetrafluoroethylene （PTFE） simulated hose endoscopes, and the latter by using calf serum as the influence factor of the organic substance. The results show that the CASP-80A low-temperature plasma sterilizer could achieve effective sterilization by either the short-cycle or the long-cycle sterilization method depending on different materials, apparatus, and extent of contamination. The organic substances could influence the effectiveness of sterilization by the low-temperature plasma （H2O2） sterilizer.展开更多
文摘In 1.2×10-2 mol/L KH2PO4-Na2HPO4(pH 6.4) supporting electrolyte, the polarographic reduce wave of vitamine B2, with peak potential of -0.43(vs,SCE),can be catalyted by the addition of H2O2, produced a new polarographic catalytic wave. With the help of cyclic voltammogram and UV-VIS spectrogram, we discussed the mechanism of the polarographic catalytic wave. Additionally, the new method to detect vitamine B2 was established, with the linear range of 4.0×10-7mol/L～8.0×10-5 mol/L and the detection limit of 1.5×10-7 mol/L. Further more, the new method was applied to detect vitamine B2 in tablet with satisfactory results.
文摘The influence on the effectiveness of sterilization by low-temperature plasma sterilizer CASP-80A was investigated so as to provide a theoretical basis for reducing medical costs and achieving ideal sterilization effectiveness. To conduct the on-site simulation test, a clinical material sterilization test and a test of the influence of organic substance were conducted, the former by using the representative of Bacillus Stearothermophilus, preparing the bacteria-contaminated carrier through polytetrafluoroethylene （PTFE） simulated hose endoscopes, and the latter by using calf serum as the influence factor of the organic substance. The results show that the CASP-80A low-temperature plasma sterilizer could achieve effective sterilization by either the short-cycle or the long-cycle sterilization method depending on different materials, apparatus, and extent of contamination. The organic substances could influence the effectiveness of sterilization by the low-temperature plasma （H2O2） sterilizer.
