摘要
本文研究了１，４－双肼酞嗪（ＤＨＰＨ）与钯的配合显色反应，在阳离子型表面活性剂氯代十六烷基吡啶存在下，在０．１～０．２ｍｏｌ／ＬＨＣｌ溶液中，试剂与钯形成１：１的稳定的黄绿色配合物，最大吸收峰在４００ｎｍ处，表观摩尔吸光系数为２．６×１０￣４，钯量在０～５０μｇ／２５ｍＬ范围内股从比尔定律，方法简便快速，选择性好，已用于催化剂中钯的测定，结果满意。
A new colour reaction of palladium with1,4-dihydrazinophthalazine(DHPH ) systemhas been studied speetrophotoinetrically, In asolution of0.1 ～ 2mol/L NCl and in thepresence of cationic surfactant CPC,Pd re-acts with DHPH to form a stable yellow-green complex with composition ratio of Pd(Ⅱ)/DHPH of 1:1.The molar absorptivityis 2.6×10￣4 L·mol￣(-1)cm￣(-1)at 400nm. Beer's Law is obeyed in the range of 0～50μg/25mL for Pd.The mothod has been oppliedto thedirectdetermination of Pd in Pd-con-taining catalysts with satisfactory sesuets
出处
《分析试验室》
CAS
CSCD
北大核心
1996年第2期47-49,共3页
Chinese Journal of Analysis Laboratory
关键词
双肼酞嗪
光度法
催化剂
DHPH
dihydrazinophthal-azine
Spectrophotometry
Palladium deter-mination
