论文部分内容阅读
1.概述 5-[(3,5-二氯-2-吡啶偶氮]-2,4-二氨基甲苯是光度法测定钯的灵敏试剂。本文采用在硫酸介质中显色,不仅显色酸度范围广,且铝、铜等容许量高,在用铝作截体的催化剂中测定钯简便迅速。近年来国内文献,多介绍用[(3,5-二卤-PADAT)工作试剂、分光光度法测定微量钯。文献研究了普通条件下合成5-[(3,5-二氯-2-吡啶偶氮]-2,4-二氨基甲苯(简称3,5-Cl_2-PADAT)的方法,以及在盐酸介质中,钯与此试剂的反应条件和共存
1. Overview 5 - [(3,5-dichloro-2-pyridylazo] -2,4-diaminotoluene is a sensitive reagent for the spectrophotometric determination of palladium.In this paper, the color was developed in sulfuric acid medium, A wide range of aluminum and copper and other high tolerance, the use of aluminum as a cross-section of the catalyst for the determination of palladium simple and rapid In recent years, the domestic literature, more introduction [(3,5- dihalo-PADAT) working reagent, spectrophotometry Method for the determination of trace palladium.We studied the synthesis of 5 - [(3,5-dichloro-2-pyridylazo) -2,4-diaminotoluene (referred to as 3,5-Cl_2-PADAT) As well as the reaction conditions and coexistence of palladium with this reagent in hydrochloric acid medium