痕量银的催化动力学光度法研究——银(Ⅰ)-乙二胺-过硫酸铵-还原型酚酞新体系  

Trace Analysis of Silver by Catalytic-Kinetic Spectrophotometry

作　　者：戴国忠[1] 蒋治良[1] Dai Guozhong;Jiang Zhiliang(Department of Chemistry,Guangxi Normal University,Guilin)

机构地区：[1]广西师范大学化学系

出　　处：《高等学校化学学报》1987年第8期703-705,共3页Chemical Journal of Chinese Universities

摘　　要：催化动力学法测定银的指示反应多为配他体取代反应与氧化还原反应,通常以后者的灵敏度较高,重现性较好,Mueller依据过硫酸钾-对氨基苯磺酸-乙二胺反应体系建立的催化动力学法,其灵敏度达1×10^(-3)μg/ml。In the presence of the activator ethylenediamine,the catalytic effect of Ag^(+) on the coloration reaction based on the oxidation of reduced phenolphthalein with (NH_(4))_(2)S_(2)O_(8) was studied.Anew catalytic-kineitc spectrophotometric method for determining Ag was developed and its optimum conditions were established.satisfactory result was obtained when the method was applied to trace analysis of Ag in water and waste water.

关 键 词：催化动力学法 催化动力学光度法 氧化还原反应 取代反应 指示反应 对氨基苯磺酸 银(Ⅰ) 乙二胺 

分 类 号：O65[理学—分析化学]