库仑滴定法测定化学需氧量的可靠性研究

STUDY ON RELIABILITY OF DETERMINING COD_(Cr) WITH COULOMB TITRATION

通过对库仑滴定法测定废水中化学需氧量（ＣＯＤＣｒ）存在的问题分析，提出相应解决办法：加强空白值试验；注意试剂、器皿使用过程中的纯净；注重废水稀释倍数的影响。这些措施为快速测定ＣＯＤＣｒ值的可靠性提供了保证。

In view of shortage of determing COD\-\{cr\} with Coulomb titration,some methods are presented :(1) Augment of blank experiment;(2) Purity of reagent and containers;(3) Enhance of wastewater dilute times.Those measures provide guarantee for reliability on quickly determining COD\-\{Cr\}.