| A POLAROGRAPHIC CATHODIC WAVE OF VITAMIN C |
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| 作者单位： | Shu Bo HAN Zhuo Bin YUAN Department of Chemistry，Graduate School，USTC，Academia Sinica，Beijing 100039，P.R.China Present Address:Dept.of Environ.Eng.，Hebei Light & Chemical Institute，Shijiazhuang 050018，Hebei，P.R.C. |
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| 摘 要： | The cathodic wave of vitamin C has not been reported in the literature so far.Its E_(1/2)wasfound at-1.85 volt vs.Ag/AgCl(25℃)in the base solution of 0.1mol/L Bu_4NI.Variouselectrochemical and spectral techniques were used for studying the electrode reaction.They all showed that the electrode reaction was quasi-reversible while C was more than1.0×10~(-6)mol/L and mainly adsorptive while C was less than 1.0×10~(-6)mol/L at a mercuryelectrode.The electron transfer number was 2 and the electron transfer coefficient 0.57.Using DPP techniques,the linear response range was 5.0×10~(-7)-2.0×10~(-3)mol/L and thedetection limit 1×10~(-7)mol/L.
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A POLAROGRAPHIC CATHODIC WAVE OF VITAMIN C |
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| Authors: | Shu Bo HAN Zhuo Bin YUAN |
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| Institution: | Shu Bo HAN Zhuo Bin YUAN Department of Chemistry,Graduate School,USTC,Academia Sinica,Beijing 100039,P.R.China Present Address:Dept.of Environ.Eng.,Hebei Light & Chemical Institute,Shijiazhuang 050018,Hebei,P.R.C. |
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| Abstract: | |
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| Keywords: | vitamin C DPP Polarographic cathodic wave |
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