摘要
本文提供了新显色剂３，５－二溴－４－偶氮变色酸苯基荧光酮的合成方法，研究了试剂与铜（Ⅵ）的分光光度性质及反应条件，在盐酸介质中及表面活性剂ＣＴＭＡＢ存在下，试剂与钼（Ⅵ）形成红色胶束配合物，在５４２ｎｍ处有最大吸收，表观摩尔吸光系数为１．６８×１０￣５Ｌ·ｍｏｌ￣－１·Ｌ￣－１，铜（Ⅵ）含量在０～１０μｇ／２５ｍＬ范围内符合比尔定律，大多数常见金属元素的存在不干扰铜的测定，拟定方法用于铜样中微量钼的测定，结果满意。
new organic reagent 2,3,7-trihydroxy-9-[3,5-dibromo-4-( 1,8-dihvdroxy-3,6-disul-fonic acid)naphthalene azo] phenylfluorone )(DBACPF)has been sythcsized.In hydrochlo-ric acid medium the color reaction of Mo(Ⅵ)with DBACPF in the presence of CTMAB hasbeen investigated.Mo(Ⅵ)reacts withDBACPF to form a red micelle complex withmaximum absorption at 542nm with a molarabsorptivity of l.68 × l0￣5L· mol￣-1·cm￣-1.Beer's law is obeyed for l～10μg of Mo(Ⅵ)per 25mL,Most other metal ions do not infer-fere with the determination. The method hasbeen used to determine Mo(Ⅵ)in steels withsatisfactory results.
出处
《分析试验室》
CAS
CSCD
北大核心
1996年第4期33-36,共4页
Chinese Journal of Analysis Laboratory
关键词
分光光度法
DBACPF
显色剂
pectrophotometry
2,3,7-tri-hydroxy-9-[3,5-dibromo-4-(l,8-dihydroxy-3,6-disulfonic acid)naphthalene azo] phenylfluo-rone
molybdenum determination
