摘要
在非离子表面活性剂吐温－８０存在的Ｈ３ＰＯ４介质中，Ｍｎ２＋对Ｖ（Ｖ）氧化二安替比林苯乙烯甲烷（ＤＡＶＰＭ）成红色化合物的反应具有较强的催化作用，基于此采用流动注射－催化光度法测定了痕量Ｍｎ２＋，该方法的检测波长为５５５ｎｍ，检出限为０．０２μｇ／ＬＭｎ，线性范围为０．０２～６μｇ／ＬＭｎ，进样频率为６０次／ｈ对５μｇ／ＬＭｎ进行１０次测定的相对标准偏差为１．８％。经环境标准样品分析验证方法可行并已用于水样中痕量Ｍｎ２＋的测定。
A method of flow injection-catalytic photometry for determination of Mn(Ⅱ)has been devel oped.Mn(Ⅱ) has a strong catalytic effect on oxidation of diantipyril vinylphenyl methane by V (V) in a solution of phosphoric acid with the presence of Tween-80.The maximum absorption is measured at 555 nm. The detection limit for Mn is 0.02 μg/L with linear range of 0.02 ～6 μg/L.The method has been applied to determination of trace Mn in water samples with satisfactory results.
出处
《岩矿测试》
CAS
CSCD
北大核心
1996年第2期120-123,共4页
Rock and Mineral Analysis
关键词
钒
锰
流动注射分析
催化光度法
flow injection analysis
vanadium
manganese
catalytic photometry
diantipyril vinylphenyl methane(DAVPM)
