痕量元素分析误差分布

The Error Distributions of Trace Element Analysis

随机变量的分布有多种,如正态分布、对数正态分布,泊松分布、二项式分布、t分布、F分布、x^(2)分布等,在随机变量的一切可能分布中,正态分布占有特殊重要的地位。分析化学中误差是属于随机变量,化学常量分析的误差分布一般都认为遵守正态分布的。

This peper deals with the error distributions of trace elements analysis,such as data processing,estimation of error,and quality monitoring.The author suggests to calculate the statistic parameters errors and deviations of real sample analysis by formulas based on the normal destribution and then expressing them in corresponding units.