用计算机分光光度法测定Pr、Sm混合物中的单一稀土

用计算机分光光度法测定Pr、Sm混合物中的单一稀土 THE DETERMINATION OF Pr AND Sm IN THE MIXTURE BY SPECTROPHOTOMETRY WITH MICROCOMPUTER 陈丹华 first-author 蔡汝秀 曾云鹗 本文采用曲线拟合法分光光度测定Pr、Sm混合物中的单一稀土。用CyDTA扩大Pr、Sm吸收光谱形状的差别。直接光度法求出Pr、Sm总量,并以此为浓度限定条件,使计算结果的准确度有所提高,计算时间大大缩短。不同比例的Pr、Sm混合物的测定误差大多在5%以内,方法简便、快速。 Pr and Sm in the binary mixture have been spectrophotometrically determined by curve-fitting procedure. CyDTA was used to enlarge the difference of absorbance between Pr and Sm. The total concentration was determined by the diredt spectrophotometric method, and it was used as a concentration restricting condition. As a result, the accuracy and the time of the computation have been improved and decreased, the errors are within 5% for the different proportions of the mixture. 1986-01-01 2021-04-01 1