应用化学 ›› 1991, Vol. 0 ›› Issue (2): 75-77.

• 研究简报 • 上一篇    下一篇

单标准FIA梯度校正催化动力学的光度测定法

杨建男, 臧树良, 姜玉芬, 刘刚   

  1. 辽宁大学化学系, 沈阳 110036
  • 收稿日期:1990-01-24 修回日期:1990-05-09 出版日期:1991-04-10 发布日期:1991-04-10
  • 基金资助:
    国家自然科学青年科学基金

SINGLE STANDARD FIA GRADIENT CALIBRATION TECHNIQUE IN CATALYTIC KINETIC SPECTROMETRIC DETERMINATION

Yang Jiannan, Zang Shuliang, Jiang Yufen, Liu Gang   

  1. Department of Chemistry, Liaoning University, Shenyang 110036
  • Received:1990-01-24 Revised:1990-05-09 Published:1991-04-10 Online:1991-04-10

摘要: 催化动力学光度测定法有较高的灵敏度和选择性,但对实验条件要求苛刻,操作复杂,再现性较差。流动注射分析法(FIA)的引入简化了催化动力学测定的操作步骤,提高了再现性,然而连续FIA方法仅适用于催化反应较快的体系,本文将微机与FIA在线联机,利用FIA停流技术提高测试灵敏度[1],由FIA梯度校正原理[2]用单标准溶液制备“标准系列[3],建立了微机控制的适用于催化反应较慢体系的FIA催化动力学光度测定法,作为应用实例,根据Otto等提出的测定痕量Mn(Ⅱ)的原理[4,5],用本方法测定了天然水中的Mn(Ⅱ).

关键词: 催化动力学光度测定法, 流动注射分析梯度校正, 停流技术, 微机控制, 锰(Ⅱ)

Abstract: In combination with microprocessor, by using FIA stopped-flow technique and gradientcalibration, a single standard catalytic kinetic spectrophotometric method is described.Themethod is simply operated and good reproducible.It has been used in determination of trace Mn(Ⅱ) in natural water.The results were in ccordance with those obtained using Otto-Rentsch-Werner method in literature[4,5].

Key words: catalytic kinetic spectrophotometric analysis, FIA, gradient calibration, stopped flow technique, computer control, Mn(Ⅱ)