酚酞与氢氧化钠反应的同步多波长研究
Simultaneous multiwavelength study of the reaction of phenolphthalein with sodium hydroxide.
作者信息
Tam K Y, Chau F T
机构信息
Department of Applied Biology and Chemical Technology Hong Kong Polytechnic Hung Hom Hong Kong China.
出版信息
J Automat Chem. 1992;14(5):157-62. doi: 10.1155/S1463924692000294.
A photodiode array (PDA) spectrophotometer was used to study the fading reaction of phenolpthalein in dilute sodium hydroxide solution. The principal component analysis (PCA) method was employed to identify the number of light absorbing species in the kinetics system. The target factor analysis (TFA) procedure, coupled with the Broyden-Fletcher-Goldfard-Shanno (BFGS) optimization method, was applied to the observed data to deduce the rate constants and the concentration-time profile of the reaction. The internal referencing method was shown to be essential in improving the quality of data obtained by a single beam PDA spectrophotomer.
使用光电二极管阵列（PDA）分光光度计研究酚酞在稀氢氧化钠溶液中的褪色反应。采用主成分分析（PCA）方法确定动力学体系中吸光物质的数量。将目标因子分析（TFA）程序与布罗伊登-弗莱彻-戈德法布-香诺（BFGS）优化方法相结合，应用于观测数据，以推导反应的速率常数和浓度-时间曲线。结果表明，内参比法对于提高单光束PDA分光光度计所获数据的质量至关重要。
Zotero 插件