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Polarographic catalytic wave of hydrogen——Parallel catalytic hydrogen wave of bovine serum albumin in the presence of oxidants 总被引:1,自引:0,他引:1
A polarographic catalytic hydrogen wave of bovine serum albumin (BSA) at about -1.80 V (vs. SCE) in NH4CI-NH3 · H2O buffer is further catalyzed by such oxidants as iodate, per-sulfate and hydrogen peroxide, producing a kinetic wave. Studies show that the kinetic wave is a parallel catalytic wave of hydrogen, which resulted from that hydrogen ion is electrochemically reduced and chemically regenerated through oxidation of its reduction product, atomic hydrogen, by oxidants mentioned above. It is a new type of poralographic catalytic wave of protein, which is suggested to be named as a parallel catalytic hydrogen wave. 相似文献
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络合滴定中的滴定误差 总被引:1,自引:0,他引:1
利用双曲正弦函数的性质,提出了一种处理络合滴定误差的新方法,导出了一个内含最大敏锐指数的络合滴定误差公式,进而获得了计算络合滴定突跃范围的公式。其处理结果与传统方法一致。 相似文献
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采用共沉淀法水热合成了稀土Eu掺杂的镁铝类水滑石层状化合物(MgAlEuCO3-HTlcs)。探讨了溶液pH值、组分配比、陈化时间和温度对水滑石晶体结构的影响。利用XRD、FT-IR和荧光光谱对样品的组成和性质进行表征。XRD、FT-IR结果表明:当n(M2+):n(M3+)=3,n(Eu3+):[n(Al3+)+n(Eu3+)]=5%~50%,pH=10±0.1条件下进行多种离子共沉淀,并经100℃、12h水热处理后均可得到结晶好、纯度高的镁铝铕类水滑石;MgAlEuCO3-HTlcs保持了水滑石的层状结构,在600~900cm-1、1250~1350cm-1和3420~3480cm-1有红外吸收;荧光光谱测试发现掺杂稀土Eu3+离子的MgAlEuCO3-HTlcs具有Eu3+的5D0→7FJ特征光谱。稀土Eu3+成功地插层组装进入HTlcs层板,MgAlEuCO3-HTlcs化合物是一种具有选择性红外吸收和红色发光性质的双功能材料。 相似文献
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Study and Application of Polarographic Catalytic Wave of Chlordiazepoxide in the Presence of Persulfate 总被引:2,自引:0,他引:2
IntroductionChlordiazepoxide (7 chloro 2 methylamino 5 phenyl 3H 1,4 benzodiazepine 4 oxide)showingpowerfulan tianxietyeffecthasbeenwidelyusedasapsychotherapeu ticdrug .Consequently ,theneedaroseforsensitiveandrapiddeterminationofchlordiazepoxideinblood ,urinean… 相似文献