摘要
研究并比较了十二烷基苯磺酸钠(SDBS)对Bi(Ⅱ)-、Pb(Ⅰ)-8-羟基喹哪啶,Cu(Ⅰ)-、Cd(Ⅰ)-、Zn(Ⅰ)-乙二胺体系示波极谱电流的增敏效果,和对峰电位的影响及有关试验。表明SDBS只对能形成螯合阳离子者起增敏作用,其增敏程度则受SDBS在电极表面与相应螯合阳离子是形式缔合物,还是因超载静电吸引产生诱导吸附作用所制约。前者最佳可增敏达60余倍,后者最佳可增敏10余倍。
The investigation and the comparison of the enhancement effect of sodium dodecyl benzene sulfonate (SDBS) on the oscillopolarogaphie current of bismuth(Ⅲ)-, lead(Ⅱ)-8-hydroxyquinaldine(8-OXQ) systems, and copper(Ⅱ)-, cadmium(Ⅱ)-, zinc(Ⅱ)-ethylene-diamine(En) system, also the influence of it on the peak potentials and other corresponding experiments have been described in this paper. The results demonstrated that the enhancement of SDBS would appear only in the case of forming chelate cations and the enhancement degree of SDBS probably depended on that, whether SDBS with corresponding chelate cation formed an associate compound on the electrode surface, or the species of its cation were induced only by DBS^- adsorbed on the electrode surface abundantly. For optimal examples: the oscillopolarographic current of Cu(Ⅱ)-En system (the former) and that of Bi(Ⅲ)-8-OXQ system(the latter) by adding SDBS would be increased about more than 60 times and 10 times, respectively.
出处
《分析化学》
SCIE
EI
CAS
CSCD
北大核心
1992年第9期1078-1082,共5页
Chinese Journal of Analytical Chemistry
基金
国家自然科学基金
关键词
表面活性剂
增敏机理
示波极谱
Surfactant
Enhancement mechanism
Oscillopolarography
Metallic chelate cation.
