摘要
作者采用示波极谱法测定乙酰苯甲醇发酵液中苯甲醛含量。结果表明，在发酵液０．４ｍｌ、５０％乙醇溶液４．６ｍｌ和ｐＨ９．５的氨缓冲液５ｍｌ组成的电解溶液中，苯甲醛于－１．１Ｖ（ｖｓ．ＳＣＥ）有１个灵敏的波峰。苯甲醛浓度在０．０４％～０．４０％范围内与峰电流呈直线相关。本方法最低检出量为０．０１％。平均回收率为９７．９％，ＲＳＤ为２．９％。２ｄ内测定的ＲＳＤ为８．３％。
The determination of benzaldehyde in fermentation liquor of phenylacetylcarbinol by oscillographic polarography was investigated.The sensitive wave of benzaldehyde appeared at-1.1V(vs.SCE)in the electrolytic solution as follows:0.4ml fermentation liquor specimen,4. 6ml 50% ethanol and 5ml ammonia buffer at pH9.5.Within 0.04%～0.40%of benzaldehyde,the wave height was linear with the concentration of benzaldehyde.The minimun detectable concentration of benzaldehyde was 0.01%.The average recovery was 97. 9% with RSDof 2.9%and 8.3% within 2 days.
出处
《药物分析杂志》
CAS
CSCD
北大核心
1995年第5期23-25,共3页
Chinese Journal of Pharmaceutical Analysis
关键词
示波极谱法
苯甲醛
乙酰苯甲醇
发酵液
oscillographic polarography
benzaldehyde
phenylacetylcarbinol
fermentation liquor
