摘要
介绍用二溴羟基苯基荧光酮光度法测定钢中微量钼的方法．在ＨＣｌ（０．４８ｍｏｌ／Ｌ）介质中有ＣＴＭＡＢ表面活性剂存在时，钼（Ⅵ）与显色剂形成１∶１的桔红色配合物，最大吸收波长在５２８ｎｍ处，摩尔吸光系数为１．１７×１０５Ｌ／ｍｏｌ·ｃｍ．钼量在０～８μｇ／２５ｍｌ范围内符合比耳定律．大多数金属离子不干扰测定，可不经分离直接测定钢中微量钼。
A spectrophotometric method of determination of trace amounts of molybdenum in steels with DBH-PF is described In 0 48mol/L HCl medium,molybdenum(Ⅵ) reacts with DBH-PF to form a 1∶1 orange complex in the presence of CTMAB The Molar adsorptivity is 1 17×10 5 L/mol cm at 528nm Beer′s law is obeyed in the range of 0～8μg/25ml for Mo(Ⅵ) Most of the metal ions do not interfere with the determination of Mo(Ⅵ) trace amounts of molybdenum in steels can be determined in aqueous solution without Seperation With satisfactory results
关键词
二溴羟基苯基荧光酮
光度法
钼
Trihydroxy-9-Dibromohydroxy-phenylf luorone
Molybdenum
spectrophotometric determination
