| 毛细管区带电泳中钴、镍、锌、锰等金属离子的络合富集 |
| |
| 引用本文： | 张凌怡,张维冰,段继诚,张玉奎. 毛细管区带电泳中钴、镍、锌、锰等金属离子的络合富集[J]. 分析化学, 2005, 33(3): 305-308 |
| |
| 作者姓名： | 张凌怡 张维冰 段继诚 张玉奎 |
| |
| 作者单位： | 中国科学院大连化学物理研究所国家色谱研究分析中心,大连,116011 |
| |
| 摘 要： | 提出了CZE络合富集的基本方法。通过络合作用使金属离子在样品区带和背景电解质中具有不同迁移速度而实现富集。以金属离子Co^2 、Zn^2 、Mn^2 和Ni^2 为溶质，4-(2-吡啶偶氮)间苯二酚(PAR)和EDTA为络合剂进行实验研究，探讨了柱容量、样品浓度、络合剂种类及进样方式等参数对富集的影响。在不超出柱容量的情况下，峰高随着进样时间的增加而增大。采用pH8．40、6．25mmol／L硼酸盐分离不同浓度Co^2 、Ni^2 ，进样量可增加约100倍，检测灵敏度增加40倍。
|
| 关 键 词： | 毛细管区带电泳 络合平衡 富集 钴 镍 锌 锰 |
Chelating Concentration of Cobalt, Nickel, Zinc and Manganese Cations in Capillary Zone Eletrophoresis |
| |
| Zhang Lingyi,Zhang Weibing,Duan Jicheng,Zhang Yukui. Chelating Concentration of Cobalt, Nickel, Zinc and Manganese Cations in Capillary Zone Eletrophoresis[J]. Chinese Journal of Analytical Chemistry, 2005, 33(3): 305-308 |
| |
| Authors: | Zhang Lingyi Zhang Weibing Duan Jicheng Zhang Yukui |
| |
| Abstract: | A method for on-line concentration of metal cation Co~2+ ,Zn~2+ ,Mn~2+ in capillary zone electrophoresis with chelating agent (4-(2-pyridylazo)resorcinol) is presented. In the range of capacity of column, the peak height is heightened along the increasing of injection time. Parameters including capacity of column, sample concentration, kinds of chelator, injection modes were examined. In the separation of Co~2+ , Ni~2+ , the injection volume and the detection sensitivity can be increased 100 times and 40 times, respectively with ~borate buffer (pH 8.40, 6.25 mmol/L) as mobile phase. |
| |
| Keywords: | Capillary zone electrophresis chelating equilibrium concentration cobalt nickel zinc manganese |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
