College of Chemical Engineering, China University of Mining and Technology, Xuzhou 221008, China.
Luminescence. 2011 Mar-Apr;26(2):130-5. doi: 10.1002/bio.1195.
In the H2O2-SCN(-) -Cu(2+)-OH(-)-luminol oscillatory system of chemiluminescence, the effects of the ingredient concentrations, temperature, flow rate and complexing agent on the oscillatory dynamics were investigated in a continuous-flow stirred tank reactor (CSTR). The dynamical structure of two peaks during a period was discussed in detail. By addition of EDTA to the oscillating system, the peak I height decreased sharply while the peak II height was little affected, and the period kept constant. This may be due to the fast reaction between Cu(II) and EDTA and the highly stable complex Cu(II)-EDTA. From the experimental study and mechanism analysis, the chemiluminescent peak I corresponds to Cu(II) → Cu(I) transformation and the peak II corresponds to the Cu(I) → Cu(II) transformation process. The key species involving in the two-transformation process are inferred to be superoxide radical and hydroxyl radical.
在 H2O2-SCN(-)-Cu(2+)-OH(-)-luminol 化学发光振荡体系中，在连续搅拌釜式反应器（CSTR）中研究了成分浓度、温度、流速和络合剂对振荡动力学的影响。详细讨论了一个周期内双峰的动力学结构。向振荡体系中加入 EDTA 后，峰 I 高度急剧下降，而峰 II 高度几乎不受影响，周期保持不变。这可能是由于 Cu(II)与 EDTA 的快速反应以及高度稳定的 Cu(II)-EDTA 络合物。通过实验研究和机理分析，化学发光峰 I 对应于 Cu(II)→Cu(I)的转化，峰 II 对应于 Cu(I)→Cu(II)的转化过程。推断涉及这两个转化过程的关键物质是超氧自由基和羟基自由基。
