利用阻抑反应测定Mn(Ⅱ)的研究  

The Determination of Mn(Ⅱ) Concentration by Inhibition Reaction

作　　者：郭安城[1,2] 高雨 李润莲 黄月君 

机构地区：[1]山西大学化学系 [2]山西省中药材学校

出　　处：《山西大学学报（自然科学版）》1999年第2期159-161,共3页Journal of Shanxi University(Natural Science Edition)

摘　　要：实验证明在ｐＨ１．０的ＨＣｌ－ＫＣｌ酸性介质中Ｍｎ（Ⅱ）阻抑Ｆｅ（Ⅲ）催化ＮａＩＯ４氧化甲苯胺蓝（ＴｏｌｕｉｄｉｎｅｂｌｕｅＣ１５Ｈ１６ＣＩＮ３Ｓ）褪色反应是一个新的阻抑反应体系，其阻抑作用和催化反应的速率差与Ｍｎ（Ⅱ）含量有线性关系。速率差通过体系在６２２ｎｍ波长处吸光度值的变化求得，从而建立了利用阻抑反应测定Ｍｎ（Ⅱ）的新方法。该方法用于井水和自来水中Ｍｎ（Ⅱ）测定，获得满意结果。In this paper it is has been proved that in acidicmedia the Mn(Ⅱ) can inhibit the fading reaction of NaIO 4 oxidizing Toluidine blue catalyzed by Fe(Ⅲ),which is new inhibition reaction system,There is a linear correlation between the rate-difference of inhibition and catalization and the content of Mn(Ⅱ).The rate-difference can be determined by measuring the absorbance at 622nm. Based on the inhibition reaction the new method for determining Mn(Ⅱ) was established and it has been used to determine the Mn(Ⅱ) in tap water and well water,the results are satisfied.

关 键 词：阻抑反应 分光光度法 锰 测定 

分 类 号：O614.711[理学—无机化学] O657.3[理学—化学]