摘要
在０．ｌｍｏ１／ＬＨ＿２ＳＯ＿４溶液中，安非拉酮出现一灵敏的示波极谱导数还原波，Ｅ＿ｐ＝－０．８０Ｖ（ｖｓ．ＳＣＥ），峰高与安非拉酮的浓度在１．０×ｌ０￣－７～６．０×１Ｏ６ｍｏｌ／Ｌ范围内成线性关系，检出限为１．０×１０￣－７ｍｏｌ／Ｌ用于片剂测定，得到满意的结果。用循环伏安法等手段研究体系的极谱和伏安行为，测得吸附量，吸附系数β＝５．６×１０￣－４，吸引因素ａ＝０．４９，吸附自由能△Ｇ＝－２７ｋＪ／ｍｏｌ。实验表明，该体系属不可逆吸附波。
AbstractIn 0.lmol/L H_2SO_4 supporting elec-trolyte,a sensitive wave of anferpramon is ob-served in singie-sweep polarography.The peakpotential is-0. 80V(vs. SCE).The linear re-lationship holds between peak current and an-ferpramon concentration ranging from 1.0×10￣-7-6.0×10￣-6mol/L. The polarographicand voltammetric behaviours of the systemhave been studied by cyclic voltammetry , etc. Its adsorntion obeys Frumkin adsorption isotherm.The adsorption coefficient βis 5.6×10￣4 ,the attractive.factor a is 0.49.The elec-trode reduction is an irreversible process withadsorption nature Keywods Anferpramon;single sweeppolarography;adsorption wave
出处
《分析试验室》
CAS
CSCD
北大核心
1996年第4期25-28,共4页
Chinese Journal of Analysis Laboratory
基金
国家自然科学基金
