新显色剂2,4-二氯苯基荧光酮分光光度法测定微量钼  

A Study on the Spectrophotometric Determinationof Molybdenum with a New Chromogenic Reagent2,4-Dichlor-phenylfluorone

作　　者：于彦珠[1] 

机构地区：[1]内蒙古大学化学化工学院,内蒙古呼和浩特010021

出　　处：《内蒙古大学学报（自然科学版）》2002年第6期718-720,共3页Journal of Inner Mongolia University：Natural Science Edition

基　　金：内蒙古自然科学基金资助项目(99102)

摘　　要：研究了在非离子表面活性剂曲通X-100(TritonX-100)存在下,钼( )同新显色剂2,4-二氯苯基荧光酮(DCIPF)显色反应条件,结果表明:在0.06～0.15mol/L的盐酸介质中,钼与试剂形成1∶4的红色配合物,配合物的最大吸收波长为530nm,表观摩尔吸光系数为ε=1.01×105,钼含量在0～11μg/25ml的范围内符合比耳定律.多数常见离子不干扰测定,方法灵敏度较高,选择性较好,用于合金钢标准样品中微量钼的测定,结果满意.A high sensitive spectrophotometric method for the determination of Mo (Ⅵ) with a new chromogenic reagent DCIPF has been established.In a 0.06~0.15 mol/L medium of HCl,Molybdenum react with DCIPF to form a 1∶4 complex in the presence of Triton X100.It has an absorption maximum at 530 nm with a molar absorptivity of 1.01×105 L·mol-1·cm-1.Beer′s law is obeyed for the concentration of Mo(Ⅵ) in the range of 0~11 μg/25ml.The proposed method is sensitive and selective.It has been applied to determine the trace amounts of Molybdenum in alloy steels with satisfactory results.

关 键 词：显色剂 钼 2 4-二氯苯基荧光酮 分光光度法 合金钢 含量测定 显色反应 

分 类 号：O614.612[理学—无机化学] O65[理学—化学]