配位滴定法测定不同来源水的硬度  

The Determination of the Water Hardness of Different Source by the Coordination Titration

作　　者：修景会[1] 权迎春[1] 关丽萍[1] 

机构地区：[1]延边大学药学院,吉林延吉133000

出　　处：《时珍国医国药》2007年第9期2323-2324,共2页Lishizhen Medicine and Materia Medica Research

摘　　要：目的用配位滴定法测定不同来源水的硬度。方法以EDTA为标准溶液,铬黑T(EBT)为指示剂,NH_3·H_2O—NH_4Cl为缓冲溶液。结果利用配位滴定法测定了12种不同来源水的硬度,结果均符合生活用水卫生标准。结论该方法简便、快速,用于不同水的硬度测定,结果满意。Objective The different source of the water hardness were measured by the coordination titration. Methods EDTA was the standard solution, erlochrome black T（EBT） was the indicator , NH3 · H2O- NH4Cl was buffer solution . Results The water hardness of were twelve samples measured with the coordination titration , the result was up to the standard of the life water. Conclusion The method is simple and rapid. It can be used for determination of the water hardness of different source.

关 键 词：EDTA 配住滴定 水的硬度 含量 

分 类 号：R284.1[医药卫生—中药学]