微乳液介质-对乙酰基偶氮氯膦光度法测定微量的锆  

DETERMINATION OF THE TRACE ZIRCONIUM(Ⅳ) IN MICROEMULSION MEDIA BY P-ACETYLCHLOROSPHONAZO SPECTROPHOTOMETRY

作　　者：董雅芬[1] 李秀玲[1] 

机构地区：[1]浙江大学华家池校区化学实验室,杭州310029

出　　处：《化学分析计量》1999年第4期19-20,共2页Chemical Analysis And Meterage

摘　　要：研究了在微乳液介质中锆与对乙酰基偶氯膦显色反应的条件。络合物的最大吸收波长在685nm处，锆含量在0－30μg/25mL的范围内符合比尔定律，表现摩尔吸光系数为3．0×10^4L/(mol·cm)，络合物的络合比为1：1。对乙酰基偶氮氯膦与锆的显色反应体系稳定性及重现性较好。直接用于实际样品的测定，结果较好。The blue complex is formed by the reaction of zirconium with p-acetylcblorosphonazo in the presence of microemulsion media.The absorption maximum is at 685 nm.The molar absorptivity is 3.0×104 I/(mol·cm).Beer's law is obeyed in the range of 0~ 30μg/25 mL for Zr(Ⅳ).The complex molar ratio of Zr to CPA-pA is 1:1.This method has been applied in the determination of zirconium (Ⅳ) in the alloy and building-material.

关 键 词：微乳液 对乙酰基偶氮氯膦 锆 分光光度法 微量分析 显色反应 

分 类 号：O614.412[理学—无机化学] O657.32[理学—化学]