摘要
研究了单扫描示波极谱法测定苋菜红的新方法，并对其电极反应机理进行了探讨。在ｐＨ８～９．５的六次甲基四胺介质中，苋菜红于－０．５７Ｖ（ｖｓ·ＳＣＥ）处产生一灵敏的吸附还原波，导数波高与苋菜红的浓度在０．０５～１０．００ｍｇ／Ｌ之间呈线性关系，检测限为０．０３ｍｇ／Ｌ。用本法测定了汽水中苋菜红的含量，其灵敏度、选择性。
In 0.1 mol·L -1 hexamethylenetetramine medium(pH8～8.5),by using oscillopolarography,amaranth could produce a sensitive cathodic polarographic wave at -0.57V(vs.SCE).There is a linear dependence of wave height on amaranth concentration (0.05～10mg/L).The determining limination of the method is 0.03mg/L.The method is better than chromatography spectro photometry in selectivity and sensitivity,and has been applied to determining amaranth in foods or beverages.
出处
《郑州粮食学院学报》
1997年第1期76-79,共4页
Journal of Zhengzhou Institute of Technology
基金
郑州粮食学院青年科研基金
