论文部分内容阅读
用线性法计算酸碱滴定终点扩大了酸碱滴定的范围,使稳定常数的对数值在11以下的极弱酸和两种酸logK值之差小达0.5的混合酸可直接滴定分析。线性法的基本思想是依据分析化学中溶液平衡关系对酸碱电位滴定曲线用一数学模型来描述整个过程。通过计算机对该数学模型求解而得出被测物的浓度。当决定一个随机变量的各个随机因素的概率分布已知时,就可以用数学方法进行统计试验来模拟实际过程,以得到随机变量的样本。
Calculating the end point of acid-base titration with the linear method widens the range of acid-base titration so that the mixed acid with a logarithm of a constant of 11 or less and a logarithmic difference of two acids of 0.5 can be directly titrated. The basic idea of linear method is to describe the whole process by using a mathematical model based on the relationship between the solution equilibrium in the analytical chemistry and the acid-base potentiometric titration curve. The mathematical model was solved by computer to get the concentration of analyte. When the probability distribution of each random factor that determines a random variable is known, statistical tests can be performed mathematically to simulate the actual process to obtain a sample of random variables.