摘要
基于黄连素在过氧化氢存在下产生的极谱催化波，拟定了测定黄连素的新方法。在８．０×１０－２ｍｏｌ／ＬＮａ２Ｂ４Ｏ７－Ｎａ２ＣＯ３（ｐＨ９．４±０．４）－４．０×１０－３ｍｏｌ／ＬＨ２Ｏ２底液中，催化波峰电流与黄连素浓度在 １．０ × １０－８～ ３．０ × １０－７ｍｏｌ／Ｌ范围内呈线性关系。催化波的灵敏度比相应黄连素还原波高２５倍。
A method for the determination of berberine was proposed based on its polarographic catalytic wave in the presence of H2O2. In 8 .0 × 10-2 mol/L Na2B4O7-Na2CO3 (pH 9 .4 ± 0.4)4 .0 × 10-3mol／L H2O2, base solution, the first order derivative peak current of the catalytic wave is proportional to the berberine concentration in the range of 1 .0 × 10-8 - 3 .0 × 10-7 mol/L(r = 0. 9996). The sensitivity of the catalytic wave is 25 times higher than that of the corresponding reduction wave.
出处
《分析化学》
SCIE
EI
CAS
CSCD
北大核心
2000年第12期1538-1541,共4页
Chinese Journal of Analytical Chemistry
基金
国家自然科学基金资助课题!(批准号:29875017)。
