| 吸附伏安法测定抗坏血酸实验条件的确定 |
| |
| 引用本文： | 向斌.吸附伏安法测定抗坏血酸实验条件的确定[J].化工时刊,2009,23(9):20-22. |
| |
| 作者姓名： | 向斌 |
| |
| 作者单位： | 江苏省产品质量监督检验研究院,江苏南京210008 |
| |
| 摘 要： | 采用吸附伏安法，在纳米介孔二氧化硅修饰碳糊电极上测定抗坏血酸，讨论了支持电解质溶液、pH值、富集电位、富集时间以及扫描速率对检测峰电流的影响，确定出当支持电解质为PBS缓冲溶液，pH值为5．5，开路富集时间为120s，扫描速率为50mV／s时，可获得最大检测峰电流。
|
| 关 键 词： | 抗坏血酸 纳米介孔二氧化硅 碳糊电极 |
The Determination Ascorbic Acid of the Optimal Condition by Adsorptive Stripping Voltammetry |
| |
| Xiang Bin.The Determination Ascorbic Acid of the Optimal Condition by Adsorptive Stripping Voltammetry[J].Chemical Industry Times,2009,23(9):20-22. |
| |
| Authors: | Xiang Bin |
| |
| Affiliation: | Xiang Bin (Jiangsu Supervision and Test Center for Product Quality; Jiangsu Nanjing 210008) |
| |
| Abstract: | Mesoporous SiO2 modified carbon paste electrode was used as a working electrode for the selective ascorbic acid by adsorptive stripping voltammetry. The results showed that the peak currents were linear to the concentration of ascorbic acid over the wide range from 0.1 μmol/L to 2 μmol/L, and the detection limit was 0.05 μmol/L, the regress linear equation was Ip（μA） = 1. 236 ＋3. 207C（μmol/L） ,R =0. 981. |
| |
| Keywords: | ascorbic acid mesoporous SiO2 modified carbon paste electrode asorptive stripping voltammetry |
| 本文献已被 维普 万方数据 等数据库收录！ |
