异丙醇-ClO^--H_2O_2化学发光新体系研究

STUDY ON THE NOVEL CHEMILUMINESCENCE SYSTEM OF ISO-PROPYLALCOHOL-ClO^--H_2O_2

本文首次报道异丙醇-ClP--H_2O_2新体系的化学发光,对影响该化学发光反应的因素进行了研究,并探讨了该发光新体系的分析应用和反应机理。

The present paper reports a novel chemiluminescence (CL) system, iso-propylalcohol-ClO--H2O2. In basic medium, iso-propylalcohol can react with ClO- or H2O2 to produce CL emission. If iso-propylalcohol was initially mixed with ClO- and then H2O2 was added to the above mixed solution the CL intensity became greater. The kinetic process agreed with the index attenuation formula I(t) = 16exp(-0.21t), and the constant of attenuation speed was 0.21sec-1. The effects of reagent concentration, some metal ions and pH value of ClO- solution on the CL in tensity were studied. Acetaldehyde can enhance the CL intensity, and the enhanced CL intensity is proportional to the concentration of acetal-dehyed within the range of 5.0×10-10g/ml-1.0×10-6g/ml. Based on this result, we have developed a new CL method for the determination of trace acetaldehyde, with which some foreign inorganic ions as well as usual organic compounds do not interfere. The mechanism of the CL reaction has also been briefly discussed.