二溴代苤硒脑极谱吸附波的研究及应用  

Studies on Polarographic Adsorption Wave of Dibromopiaselenole and Its Application

作　　者：蔡乾涛 施文赵 Cai Qiantao;Shi Wenzhao(Department of Chemistry,Huazhong University of Science and Technology,Wuhan)

机构地区：[1]华中工学院化学系

出　　处：《高等学校化学学报》1988年第3期287-289,共3页Chemical Journal of Chinese Universities

摘　　要：硒(Ⅳ)与邻芳香二胺类试剂能生成相应的苤硒脑衍生物,利用其电还原性质可用极谱法测定硒,二溴代苤硒脑的极谱特性及应用尚未见报道,本文研究了硒(Ⅳ)与二溴代邻苯二胺(简称DBDA)所生成的4,6-二溴代苤硒脑(简称PIS)的极谱行为,发现PIS在汞电极上于-0.1V(vs.AgCi/Ag)左右产生一良好的灵敏极谱波.In this paper the polarographic behaviour and mechanism of adsorption wave of 4,6-dibromopiaselenole(4,6-diBr-PIS) in several mediums are studied by cyclic voltammetry and differential neopolarography. In weak acidic medium 4,6-diBr-PlS gave a sensitive irreversible adsorption wave (Epc = -0.1V vs. AgCl/Ag electrode) on mercury electrode.The wave could be used as basis of the sensitive semi-differential neopolarographic method for the determination of trace selenium.

关 键 词：硒(Ⅳ) 芳香二胺 汞电极 极谱波 邻苯二胺 极谱吸附波 极谱法测定 极谱行为 

分 类 号：R74[医药卫生—神经病学与精神病学]