用折射率法测水中三聚氰胺质量浓度  

Determination of Melamine Concentration in Water Based on Refractive Index Method

作　　者：许迁[1] 温绍国[1] 王继虎[1] 刘宏波[1] 沈艳[1] 

机构地区：[1]上海工程技术大学化学化工学院,上海201620

出　　处：《上海工程技术大学学报》2010年第2期154-157,共4页Journal of Shanghai University of Engineering Science

基　　金：上海市科技兴农重点攻关资助项目(沪农科攻字(2000)第8-10号);上海工程技术大学研究生创新资助项目(2009yjs04)

摘　　要：配制了不同质量浓度的三聚氰胺溶液,对其在不同温度和pH值下的折射率进行了测定.结果发现:在相同温度下,三聚氰胺溶液的折射率随质量浓度的增大而增大;在相同质量浓度下,三聚氰胺溶液的折射率随温度的升高而降低;在酸性条件下,pH值对三聚氰胺溶液折射率有一定的影响;在碱性条件下,pH值对折射率几乎没影响.通过线性拟合得出质量浓度、温度和pH值三者之间的关系式,误差分析表明计算值符合实验值.Melamine solutions with different mass concentrations were prepared,and their refractive indexes under different pH values and different temperatures were determined.The result shows that the refractive index of melamine solution increases with increasing of the mass concentration at the same temperature,decreases with increasing of the temperature at the same mass concentration.The pH value has a certain impact on refractive index under acidic conditions,but almost has no impact on refractive index under alkaline conditions.Through the linear fitting,the relationship between mass concentrations,temperature,pH values was determined.The error analysis shows that measured values conformed to experimental values.

关 键 词：折射率 三聚氰胺 质量浓度 

分 类 号：TQ612.6[化学工程—精细化工]