化学需氧量测定中空白值控制图的制作及应用

Application and Drawing Blank Value Control Chart When Monitoring Chemical Oxygen Demand

根据COD测定实验,摸索出先求出CODcr空白值,再以20个空白值绘制空白控制图,用于检查控制CODcr的分析质量,取得了较满意的效果。

Blank value of COD is gotten based on the test of monitoring COD,then blank value control chart of COD is drawn based on 20 blank values to check analysis quality of COD.