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维生素B₁、维生素B₂、维生素B_C的极谱分析法

The Analysis of Vitamin B₁,Vitamin B₂ and Vitamin B_C by Polarograph

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【Author】 LUO Xiang-gui1,CHEN Li-xin2,LIU Ting-ting2 (1 Hunan Machinery Research Institute,Hunan Changsha 410116;2 Department of Chemistry and Chemical Engineering,Hunan Institute of Engineering,Hunan Xiangtan 411104,China)

【机构】湖南省机械研究所；湖南工程学院化学化工学院；

【摘要】维生素B1、维生素B2、维生素BC混合物在pH为6.0的NaH2PO4-Na2HPO4缓冲溶液中均各自产生灵敏的极谱吸附波,且峰电位各不相同,依次为-1.5 V(vs.SCE)、-0.48 V(vs.SCE)、-0.90 V(vs.SCE)。且混合物浓度在1×10-4～6×10-2mol/L范围内维生素B1、维生素B2、维生素BC均与峰电流有良好的线性关系,线性系数分别为:0.9994、0.9960、0.9992,混合物的检出限为5×10-6mol/L。更多还原

【Abstract】 Three vitamin components of Vitamin B1,Vitamin B2,and Vitamin BC,can be determined separately by using adsorptive polargraphic technique in the NaH2PO4-Na2HPO4 buffer solution system.The peak potential was Ep=-1.5 V(vs.SCE),Ep=-0.48 V(vs.SCE),and Ep=-0.90 V(vs.SCE),respectively.When the concentration of the three vitamin components was in the range of 1×10-4~6×10-2 mol/L,there was a good linear relationship between the peak current and the concentration of the three vitamin components,and its detection limit was 5×10-6 mol/L.更多还原