本文阐述了快速法测定COD值的优点,同时对常见的近二十个样品的COD值采用快速法和标准法两种方法进行对比测定。数据表明,快速法可以代替标准法作为常见样品的常规分析。为了使快速法测定的数据和标准法取得一致,准确的求取工作曲线斜率的倒数,(即K值)是很重要的。本文就工作曲线的制作作了一些探讨。 This article describes the advantages of rapid determination of COD value, while the common COD value of nearly 20 samples using fast method and standard method of two methods for comparative determination. The data show that the fast method can replace the standard method as a routine analysis of common samples. In order to make the data determined by the fast method consistent with the standard method, it is very important to accurately find the reciprocal of the slope of the working curve (ie, K value). This article made some discussions on the work curve.