摘要
本文研究了在CTMAB—TritonX—100存在下,邻氯苯基萤光酮(0—CIPF)作为荧光试剂的荧光猝灭法测定微量铍的方法,建立了最佳的测试条件,其激发波长和发射波长分别为521nm和554nm,反应的适宜酸度范围为pH7.2～8.2,铍量在0.02～0.3μg/25ml范围内成线性关系,配合物组成比为Be:0-CIPF=1:2,可测定下限为0.8ppb。用本法测定了铍青铜及废水中的铍,得到了较为满意的结果。
A new fluoro--quenching method for the determination of microamounts of beryllium with o-chlorophenylfluorone in the prescence of CTMAB and Triton X-100 has been studied. The optimum conditions have been established, The exitation and emission wavelength are 521nm and 554nm, respectively. Rectilinear range is 0.02-0.3ug Be/25ml at pH from 7.2-8.2. The lowest determinaton limit is 0.8ppb. The molar ratio of Be to o-CIPF is 1: 2. The relative standard deviation of determination is 3.23%, The method has been applied to the determination of Be in the beryllium-copper alloy and waste water with satisfactory results.
出处
《郑州大学学报（自然科学版）》
CAS
1990年第2期75-79,共5页
Journal of Zhengzhou University (Natural Science)
关键词
铍
荧光猝灭法
萤光酮
Beryllium
O—Chlorophenylfluorone
Fluoro—quenching method.
