摘要
本文用荧光熄灭法研究了二溴羟基苯基荧光酮（ＤＢＨ－ｐＦ）－溴化十六烷基三甲铁（ｃＴＭＡＢ，）─Ｇｅ（Ⅳ）体系的反应条件和测定方法。在０．６２～０．０６ｍｏｌ／Ｌ的硫酸介质中，检测限为０．０３μｇ／２５ｍｌ，在０．０３～０．５μｇ／２５ｍｌ范围内，具有线性关系。本法灵敏度高，选择性好，用于烟道灰中的微量锗的测定，结果满意。
Ge（Ⅳ）was determined by fIuorometric quenching method using DBH-PF and CTMAB as reagents in acid medium，Ge（Ⅳ），DBH－PF and CTMAB react to form a complex，Its constituent is established by methods of isomolar continuous variation and the equilibrium shift as Ge(Ⅳ) ：DBHPF＝1：4。Its maximum excitation wavelengths are 472n m and 504nm，maximum emission wavelength is 523nm.The linear range is 0．03- 0．5μg／25ml the defectien limit of Ge(Ⅳ)is 0．03μg／25ml. This method is selective and highly sensitive to Ge（Ⅳ）；The method may be used for the determination of trace Ge in soot in smokeflue.
出处
《冶金分析》
CAS
CSCD
北大核心
1994年第1期6-8,共3页
Metallurgical Analysis
关键词
锗
荧光熄灭法
DBH-PF
微量分析
篏ermanium,2，3，7－Trihydroxy-9-dibromo－hydroxy-phenylfluorone（DBH-PF），Fluoresence quenching method
