斯巴沙星-三辛基氧化膦-溴化十六烷基三甲基铵吸光光度法测定混合稀土中钕  

ABSORPTIOPHOTOMETRIC DETERMINATION OF NEODYMIUM IN RARE EARTH MIXTURE WITH SPLX AND TOPO IN THE PRESENCE OF CTMAB

作　　者：赵文渊[1] 姜玮[1] 王乃兴[1] 

机构地区：[1]山东大学化学与化工学院,济南250100

出　　处：《理化检验（化学分册）》2002年第6期271-273,共3页Physical Testing and Chemical Analysis(Part B:Chemical Analysis)

摘　　要：研究了钕 斯巴沙星 (SPLX) 三辛基氧化膦 (TOPO) 溴化十六烷基三甲基铵 (CTMAB)体系的光度特性 ,确定了测定混合稀土中钕的最佳条件 ,提出了一种灵敏度较高、选择性好的测定钕的方法。在最佳试验条件下 ,钕的线性范围为 0 .4～ 5 .0× 10 -4 mol·L-1,检出限为 1.0× 10 -6mol·L-1(S N =3)。采用标准曲线法测定混合稀土中钕 。The absorptiophotometric behaviors of chromogenic reaction of neodymium with sparfloxacin (SPLX) and TOPO in the presence of CTMAB were studied thoroughly and repored in this paper. The effect of experimental conditions on the absorbance was studied. Under the optimum experimental conditions the absorbance was a linear function of the concentration of neodymium in the range of 0.4～5.0×10 -4mol·L -1. The detection limit was found to be 1.0×10 -6mol·L -1 (S/N=3). Neodymium can be determined selectively in samples of rare earth mixture and the results obtained were quite satisfactory.

关 键 词：三辛基氧化膦 溴化十六烷基三甲基铵 测定 混合稀土 吸光光度法 钕 斯巴沙星 配合物 标准曲线法 分析 

分 类 号：O614.33[理学—无机化学] O657.32[理学—化学]