摘要：

在室温下用滴定法测定不同水质的临界pH值及添加阻垢剂后溶液的临界pH值，发现在同等剂量情况下，阻垢性能好的阻垢剂，相应溶液的临界pH值高，可用于阻垢剂的筛选。

关键词: 临界pH值, 阻垢剂

Abstract:

The critical pH value of different water with/without scale inhibitor is determined by titration under room temperation.It is found that,when the same amount of scale inhibitors are added,the better scale inhibitor is,the higher solution pHc is. So pHc titration method can be used in the selecting of scale inhibitors.