镍离子、镁离子、镉离子和锌离子在铁氰化钾-鲁米诺反应中的后化学发光行为。
Post-chemiluminescence behaviour of Ni2+, Mg2+, Cd2+ and Zn2+ in the potassium ferricyanide-luminol reaction.
作者信息
Feng Na, Lu Jiuru, He Yunhua, Du Jianxiu
机构信息
College of Chemistry and Materials Science, Shaanxi Normal University, Xi'an 710062, People's Republic of China.
出版信息
Luminescence. 2005 Jul-Oct;20(4-5):266-70. doi: 10.1002/bio.836.
A new chemiluminescence (CL) reaction was observed when Ni2+, Mg2+, Cd2+ or Zn2+ was injected into the reaction mixture after the finish of the CL reaction of alkaline luminol and potassium ferricyanide. This reaction is described as a post-chemiluminescence (PCL) reaction. The possible mechanism for the PCL was proposed based on studies of the CL kinetic characteristic and the CL spectra. The experimental conditions of the CL reactions were optimized and the feasibility of using the reaction to analyse these metal ions was evaluated. The PCL reaction method operates in the ranges: 1 x 10(-7)-8 x 10(-6) g/L Ni2+; 3 x 10(-6)-2 x 10(-4) g/L Mg2+; 8 x 10(-7)-1 x 10(-4) g/L Cd2+; and 2 x 10(-4)-2 x 10(-3) g/L Zn2+, with detection limits of 4 x 10(-8) g/mL, 1 x 10(-6) g/mL, 3 x 10(-7) g/mL, 8 x 10(-5) g/mL, respectively.
在碱性鲁米诺与铁氰化钾的化学发光（CL）反应结束后，当向反应混合物中注入Ni2+、Mg2+、Cd2+或Zn2+时，观察到一种新的化学发光反应。该反应被描述为后化学发光（PCL）反应。基于对CL动力学特征和CL光谱的研究，提出了PCL的可能机制。优化了CL反应的实验条件，并评估了利用该反应分析这些金属离子的可行性。PCL反应方法的工作范围为：1×10(-7)-8×10(-6) g/L Ni2+；3×10(-6)-2×10(-4) g/L Mg2+；8×10(-7)-1×10(-4) g/L Cd2+；2×10(-4)-2×10(-3) g/L Zn2+，检测限分别为4×10(-8) g/mL、1×10(-6) g/mL、3×10(-7) g/mL、8×10(-5) g/mL。
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