摘要
研究了在表面活性剂溴化十六烷基三甲铵(CTMAB)存在下,Mo(Ⅵ)与新试剂3,5-二溴-4-偶氮-8-羟基喹啉苯基荧光酮的显色反应,在0.6mol·L^(-1)盐酸介质中,配合物最大吸收峰位于540nm处,表观摩尔吸光系数为l.64×10~5,钼浓度在0～10μg/25ml范围内符合比耳定律,体系反应酸度高,选择性好,已用于钢铁样品中微量钼的测定,结果满意.
It is reported in this paper that in an acidic medium of 0. 6mol·L-1 HC1 and in the presence of CTMAB, molybdenum (Ⅵ) reacts with the new reagent 3,5-dibromo-4-[(8-hydroxyquinoline)azo] phenylfluo-rone [abbreviated as DB(OxA)PF] to form a red complex having its absorption maxima at 540nm. The molar absorptivity is 1. 64×105. Beer's law is obeyed up to l0μg of Mo(Ⅵ) in a total volume of 25ml. The colour reaction proves to be sensitive and selective. The method has been applied to the determination of molybdenum in steels with satisfactory results.
出处
《理化检验（化学分册）》
CSCD
北大核心
1998年第12期549-550,共2页
Physical Testing and Chemical Analysis(Part B:Chemical Analysis)
基金
湖北省教委重点科研资助课题
关键词
吸光光度法
钼
钢铁
DBAHQPF
CTAB
测定
3
5-dibromo-4[(8-hydroxyquinoline)azo]phenylfluorone Photometric determination Molybdenum (Ⅵ) Steel
