摘要
基于Ｍｎ（Ⅱ）对试剂２－（８＇－羟基喹啉－５＇－磺基－７＇－偶氮基）－１－羟基－８－氨基一萘二磺酸（以下简称ＨＱＳＡＨ）分解反应的催化作用，提出了锰的荧光催化动力学分析新方法，其λｅｘ／ｅｍ＝２３０／４１５ｎｍ，适宜酸度范围为ｐＨ１１．０～１２．０，Ｍｎ（Ⅱ）含量在０～０．０８μｇ／ｍＬ呈线性关系，该法用于分析铸造铝合金中的痕量锰，效果良好。还初步探讨了反应机制，确定了反应动力学方程，测定了反应速率和活化能。
Based on the catalytic action of Mn(Ⅱ)for decomposition of 2-(8'-hydroxy qinoline-5'-sulfo-7'-azo)-1-hydroxy-8-amino-naphalenedisulfonic acid(HQSAH).A new catalytic-fluorimetric method has been developed for the determination of Mn(Ⅱ). The excitation and emission wavelength are 230 and 415 nm respectively.The optimun pH rang is 11.0～12.0,and the calibration graph is linear over 0～0. 08μg/mL Mn(Ⅱ),This method has been applied to the determination of Mn(Ⅱ)in Aluminium alloys with satisfactory result,Also in this paper,the reaction mechanism including kinetic equation and apparent activation energy has been studied.
出处
《分析测试学报》
CAS
CSCD
1994年第6期67-70,共4页
Journal of Instrumental Analysis
