摘要
本文研究了新显色剂ＤＢＦ－偶氮氯膦与锶的显色反应。在１．２ｍｏｌ／ＬＨＣＬ介质中试剂与锶反应形成１：２的蓝色配合物，其最大吸收峰在６３０ｎｍ波长处，表现摩尔吸光系数为５．０×１０￣４Ｌ·ｍｏｌ￣－１·ｃｍ￣－１，锶量在０￣１４μｇ／２５ｍｌ范围内符合比尔定律。方法用于锶硅铁合金中锶的直接光度测定获得了满意结果。
In this paper,the Colour reaction of strontium with DBF-chlorophosphonazo has been studied.strontiumreacts with the reagemt in the medium of1．2mol/L HCl to form a blue complex which has a maximum absorption at 630nmThe molar ratio of Sr to DBF-chlorophosphonazo is 1 ：2，the apparent molar absorptivity is 5．0×10^-4L· mol^-1· cm^-1Beer’ s law is obeyed in the range of 0-14 μg Sr in 25ml solution This method has been applied to the directspotrophotometric determination of strontium in strontium-bearing ferrosilicon satisfactory results
出处
《冶金分析》
CAS
CSCD
北大核心
1995年第2期11-14,共4页
Metallurgical Analysis
关键词
DBF-偶氮氯膦
锶
分光光度法
锶硅铁合金
DBF-chlorophosphonazo， Strontinm Spectrophotometry, Strontium - bearing ferrosilicon
