低场核磁共振技术测定顺磁性钆(Ⅲ)和钕(Ⅲ)  

Determination of paramagnetic rare earth ions( Gd^(3+),Nd^(3+)) concentration by low field nuclear magnetic resonance technology

作　　者：胡丽敏[1] 王春宏[1] 田焕娜[1] 王志峰 王津蜀[1] 张明[1,2] 

机构地区：[1]扬州大学化学化工学院,扬州225002 [2]扬州大学测试中心,扬州225009

出　　处：《分析试验室》2015年第12期1472-1474,共3页Chinese Journal of Analysis Laboratory

基　　金：江苏省研究生科研创新计划项目(KYLX_1337)资助

摘　　要：利用长弛豫低场核磁共振技术分别测定了六水合氯化钆水溶液、N,N-二甲基甲酰胺(DMF)溶液和六水合硝酸钕水溶液在不同浓度下的横向弛豫时间(T_2)。3种溶液体系中氢质子的横向弛豫速率(1/T2)与稀土离子的浓度均呈现出良好的线性关系,提出了利用低场核磁技术测定溶液中Gd^(3+)和Nd^(3+)浓度的方法。The transverse relaxation time of gadolinium chloride hexahydrate aqueous solution, N, N-dimethyl formamide solution and neodymium nitrate hexahydrate aqueous solution was obtained by low-field nuclear magnetic resonance （LF-NMR） technology. Results showed that hydrogen proton transverse relaxation rate （1/T2 ）with the concentration of Re^3＋ had a good linear relationship in these three solutions. It was put forward that the low-field nuclear magnetic resonance technology could be used as a method to determine the concentration of Gd^3＋ and Nd^3＋ in solution.

关 键 词：低场核磁共振 横向弛豫时间 顺磁性 稀土离子 

分 类 号：TQ041.7[化学工程]