引用本文:
索志荣, 张宏芳, 于浩, 郑建斌. PAN-Co配合物用于维生素B12的示波测定[J]. 应用化学,
2002, 19(4): 381-383.
Citation: SUO Zhi-Rong, ZHANG Hong-Fang, YU Hao, ZHENG Jian-Bin. Oscillographic Determination of VB12 via PAN-Co Coordination Compound[J]. Chinese Journal of Applied Chemistry, 2002, 19(4): 381-383.
Citation: SUO Zhi-Rong, ZHANG Hong-Fang, YU Hao, ZHENG Jian-Bin. Oscillographic Determination of VB12 via PAN-Co Coordination Compound[J]. Chinese Journal of Applied Chemistry, 2002, 19(4): 381-383.
PAN-Co配合物用于维生素B12的示波测定
摘要:
维生素B12是一种用于治疗恶性贫血和其他巨细胞型贫血的药物.
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关键词:
- 维生素B12
- / 示波分析
- / 简易示波伏安法
- / (吡啶偶氮)萘酚-Co2+
English
Oscillographic Determination of VB12 via PAN-Co Coordination Compound
Abstract:
1-(Pyridylazo)-2-naphthol(PAN) can cause a sensitive incision on the oscillogram in NaOH solution, and the incision depth would decrease linearly with the increase of the concentration of Co2+. Based on this oscillographic characteristic, second order differential oscillographic voltammety is developed for Co2+ determination. The linear range of the determination of Co2+ is 2.00×10-7~8.20×10-6 mol/L and the detection limit is 1.00×10-7 mol/L. RSD is 1.8% for eight successful determinations of 4.20×10-6 mol/L Co2+. Satisfactory results were obtained by this method in determination of VB12 content in VB12 injection liquid.
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