摘要
研究了线性扫描伏安法中钒(Ⅴ)的吸附溶出催化行为体系,借以分析环境、食品和生物样品。钒浓度与峰电流在10^(-2)～10^(-12)mol/L间按数量级分段成线性关系。最低检出限为6×10^(-13)mol/L,相对标准偏差在8％以下,干扰较少。
An adsorptive stripping catalytic system of vanadium ( V ) is studied in this paper. A base solution consists of 1 × 10-5 mol/L pyrogallol carboxylic acid(HL) and 0. 05 mol/L NaBrO3 in 0. 05 mol/L HAc-NaAc buffer (pH = 5). In this base solution, the complex HVO2L22- was adsorbed onto the DME at - 0. 15 V(vs SCE). An adsorptive stripping catalytic wave appeared when the electrode potential was scanned to - 0. 9 V. Peak potential was at - 0. 7 V or so. The peak current was very sensitive. The detection limit of vanadium ( V ) is 6×10-13 mol/L. Using this system for analysis of samples such as natural water, liquor and hair, satisfactory results were obtained.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
1990年第4期363-366,共4页
Chemical Journal of Chinese Universities
基金
国家自然科学基金
关键词
钒
没食子酸
吸附
溶出
催化伏安法
Adsorptive stripping catalytic voltammetry, Pyrogallol carboxylic acid, Determination of Vanadium(Ⅴ)
