摘要
研究了阳离子表面活性剂氯化十六烷基吡啶（ＣＰＣ）存在下，ｐＨ４．８的ＨＯＡｃ－ＮａＯＡｃ缓冲介质中，Ｔｅ（ＩＶ）与过量的水杨基荧光酮（ＳＡＦ）形成１：４的稳定佤合物，其最大吸收波长为５３４ｎｍ，表现摩尔吸光系数为１．４７×１０＾５，Ｔｅ（Ⅳ）浓度在０～８μｍ／２５ｍｌ范围内遵守比耳定律，建立了水相测定硒中微量碲的吸光光度法，获得了满意的结果。
It is found that tellurium(Ⅳ) reacts with saiicyl fluorone in a HOAc-NaOAc buffer medium of pH 4. 8 to form a stable complex with a molar ratio of 1 : 4 in the presence of a cationic surfactant-cetyl pyridinium chloride (CPC). The absorption maximum of the complex lies at 534nm and its apparent molar absorptivity is 1. 47× 105. Beer' s law is obeyed for tellurium in the range of 0-8μg/25ml. The method is highly sensitive and has been applied to the determination of traces of tellurium in selemium with satisfactory results.
出处
《理化检验（化学分册）》
CAS
CSCD
北大核心
1996年第1期11-12,共2页
Physical Testing and Chemical Analysis(Part B:Chemical Analysis)
关键词
碲
水杨基荧光酮
光度法
水样
Tellurium Salicyl fluorone Cetyl pyridinium chloride Absorptiophotometry
