摘要
本文提出了一个锆-二溴苯羟基荧光酮(DBHPF)-乳化剂OP荧光光度法测定微量锆的新体系。在0.5~1.2mol/L的HCl介质中,铅与DBHPF生成组成比为1:4的红色荧光性络合物。荧光强度与锆(Ⅳ)的浓度在0~100μg/L呈线性关系;检出限为2.0μg/L,灵敏度高,高选择性好,用于瓷釉等样品中ZrO2的测定,获得满意的结果。
A fluorometric determination of trace zirconium is proposed. In HCl medium, Zr (Ⅳ ), 2, 6, 7-Trihydroxy-9- (3, 5-dibromo-hydroxyphenyl ) fluorone (DBHPF) and emulsify ing agent p-octylpolyethyIenglycol phenylether react to form a complex. Its constituent is es tablished by the method of isomolar ccntinuous varitaion and molar ratio as Zr(Ⅳ ): DBHPF = 1: 4, its maximum excitation wavelength is 527. 2 nm,and the maxiumu emission wave length is 557. 9 nm. The linear range of Zr (Ⅳ ) is 100μg/L with the detection limit of 2μg/L. The method is selective and highly sensitive for zirconium. This method has been applied to the determination of trace zirconium in melt cast Al2O3 and porcelainglaz samples.
出处
《分析化学》
SCIE
EI
CAS
CSCD
北大核心
1996年第1期77-79,共3页
Chinese Journal of Analytical Chemistry
关键词
荧光酮
锆
荧光法
瓷釉
氧化铝
Zirconium
2,6,7-trihydroxy-9-(3,5-dibromo-hydroxyphenyl) fluorone
emulsifying agent-p-octylpolyethylenglycol phenylether