期刊论文

Spectrophotometric Determination of Microamount Molyhdenum with o-Hydrosy Naphthyl Fluorone and DDMBA

中文

冶金分析

1000-7571

1994

14

5

17-19

本校为第一机构

研究了在表面活性剂化十二烷基二甲基苄铵（ＤＤＭＢＡ）存在下，钼与邻羟基萘基荧光酮（β－ＨＮＦ）的显色反应。Ｍｏ（Ⅵ）与β－ＨＮＦ形成１：２红紫色配合物，配合物在波长５５０ｎｍ处的摩尔吸光系数ε为１．４７×１０＾５。钼含量在０－５μｇ／２５ｍｌ范围内符合比尔定律。许多基它金属离子不干扰测定。应用于钢铁，合金及矿物中钼的测定，收到好的效果。

Abstract A highly sensitive method for the spectrophotometric determination of molybdenum with o-hydroxynaphthyl fluorone and DDMBA has been investigated. The molar absorptivity of the com-plex is 1．47×10~5 at 550nm. The molar ratio of Mo(Ⅵ) to β-HNF in the complex was determined to be 1∶2．Beer＇s law is obeyed in the range of 0 to 5μgMo／25ml．This method has good selectivity,many other metal ions don＇t inrerfere with the determination.A new method for the spectrophoto-metric determination of molybdenum has been used to analyse several...