根据动力学-光谱数据解析高锰酸钾氧化草酸钠的反应过程

通过在线测量硫酸介质中高锰酸钾氧化草酸钠反应过程的光谱变化，获得了动力学—光谱二维数据。借助主成分分析法，确定了高锰酸钾的单信息区，并确认反应过程中产生了一种有吸收的中间体。根据最小二乘回归等化学计量学方法，结合相关组分间存在等吸收点这一光谱特征及质量平衡原理，成功地解折出反应体系中相关组分的实际动力学谱及纯光谱。根据Savitsky-Golay求导法，获得了各组分的速率曲线。对解析结果的进一步研究表明，该反应符合自催化模式。

Resolution of the Kinetic Process of Potassium Permanganate Oxidizing Sodium Oxalate Based on Two-way Kinetic-spectra Data

Two-way kinetic-spectral data can be obtained, as monitor on-line the changes of the absorption spectra in the reaction of potassium permanganate and sodium oxalate in the medium of sulfuric acid. Principle component analysis (PGA) allows the selective wavelength region of the potassium permanganate to be determined and what is more, the produce of an absorbing intermediate to be deduced. According to chemometric methods e.g. least squares regression, in combination with the isoabsorptive points between components and the mass equilibrium principle, both the real kinetic and absorption spectra of individual components can then be resolved. Consequently, the shortcoming of the common methods, that the results are limited to the relative values, can thus be overcome. Based upon Savitsky-Golay method, the rate curves responsible for individual components are smoothly done. It's proved by further studies that the process stated above is an instance of the autocatalvsis model.