郑州大学学报（理学版）2016，Vol.48Issue(1)：63-66,4.DOI:10.3969/j.issn.1671-6841.201507007
以大黄酸为荧光探针分子测定木耳中镁离子的含量
Determination of Mg2+ in Fungus by Using Rhein as a Selective Fluorescent Probe
李蒙蒙 1曹丰璞 1王兴阳 2邱东方1
作者信息
- 1. 南阳师范学院 化学与制药工程学院 河南 南阳473061
- 2. 南阳市农产品检测中心 河南 南阳473000
- 折叠
摘要
Abstract
By using the purified rhein as the fluorescent probe, an analytical system with high selectivity and sensitivity was established for determination of Mg2+ in fungus. In DMSO/NH4 Cl-NH3 ·H2 O ( V/V 95∶5, [NH4Cl] = 0. 05 mol/L,pH 10. 4)buffer solution, the complex with 1∶1 stoichiometry of rhein and Mg2+ was formed, which showed the strong fluorescence at λmax = 602 nm. A good linear relation-ship between the fluorescent intensity and Mg2+ concentration from 0 to 2. 1 × 10 -5 mol/L was deter-mined. The detection limit was 5. 52 × 10 -7 mol/L. This method was successfully used to detect the con-tent of Mg2+ in fungus, and it was in consistent with the result obtained by the atomic absorption spectros-copy.关键词
大黄酸/镁离子/荧光探针/木耳Key words
rhein/Mg2+/fluorescent probe/fungus分类
化学化工引用本文复制引用
李蒙蒙,曹丰璞,王兴阳,邱东方..以大黄酸为荧光探针分子测定木耳中镁离子的含量[J].郑州大学学报（理学版）,2016,48(1):63-66,4.
