摘要
本文讨论了钒(V)与5-Br-PADAP形成的配合物在悬汞电极上的不可逆吸附还原的导数吸附伏安法,并用所建立的方法测定了自来水中超痕量的钒(V)。方法的线性范围为7.5×10^(-10)～1×10^(-7)mol/L,检测下限为5×10^(-10)mol/L。
Derivative technique is applied to irreversible reduction of the vanadium complex with 5-Br-PADAP at a hanging mercury drop electrode using linear sweep adsorption voltammetry.The theoretical and analytical characteristics have been investigated with first and second order derivative technique. The technique is more sensitive than that of normal linear sweep adsorption voltammetry.Vanadium can be detected down to 5×10^(-10)mol/L. This method has been applied to the determination of ultratrace vanadium in tap water.
出处
《分析化学》
SCIE
EI
CAS
CSCD
北大核心
1989年第12期1085-1089,共5页
Chinese Journal of Analytical Chemistry
基金
国家自然科学基金资助课题
关键词
水
吸附伏安法
钒
Adsorption voltammetry
Water
Vanadium
5-Br-PADAP
