摘要
研究一种测定对苯二甲酸中痕量锆的分析方法.该方法利用显色剂4,5-二溴苯基荧光酮（DBPF）与锆在吐温-20（聚环氧乙烷（20）失水山梨醇单月桂酸酯）存在下,0.64mol.L^-1的HCL介质中形成1：4的橙红色配合物,最大吸收峰位于546nm处,锆含量在0～8μg/25mL范围内符合比尔定律.方法灵敏,选择性好.
A method of determination trace Zirconium in Terephthalic Acid has been developed. In this method, an orange red complex of zirconium with 4,5-dibromophenylfuorone （DBPF） is formed in the presence of Tween-20 in 0.48 ～ 0.72mol·L^-1 HCl medium. The molar ration of Zr to DBPF is 1 ： 4. In the rang of 0 to 8μg/25mL of Zr4^＋ the absorption obeys Beer＇ s law . This method has been applied to determine trace Zirconium in Terephthalic with a high sensitivity and a good selectivity.
出处
《现代仪器》
2006年第3期21-22,26,共3页
Modern Instruments
关键词
对苯二甲酸
锆
测定方法
Terephthalic acid Zirconium Determination method
