摘要
研究了4-氨基安替吡啉分光光度法测定木醋液中酚类含量的适宜条件.结果表明,当稀释因子在40～500范围内,放置时间为10 min时,酚类化合物在0.005～0.08 g/L范围内与吸光度呈良好的线性关系,相关系数R2为0.994 7.按不同的稀释因子测定了木醋液中的酚含量,其RSD为0.38%.测定方法的平均回收率为99.4%,同时对减压蒸馏预处理进行了加标实验,其平均回收率为96.5%.
A new method is developed for the determination of phenolic content in pyroligneous acid by 4-aminoantipyrine spectrophotometry.The results indicate that dilution factor is in range of 40~500,and the reaction time is 10 min.By plotting phenols content against absorbence,a linear relationship is obtained（R2=0.994 7）.The linear range of phenols content vs absorbence is from 0.005 to 0.08 g/L.With different dilution factors,phenols content is determined in pyroligneous acid,and the relative standard deviations（RSD） is 0.38%.The average recovery rate of the sample is 99.4%,as well as the average recovery rate of added pyroligneous acid by vacuum distillation is 96.5%.
出处
《郑州大学学报（理学版）》
CAS
北大核心
2010年第3期93-97,共5页
Journal of Zhengzhou University:Natural Science Edition
基金
河南省科技厅资助项目
编号74300510015
关键词
木醋液
4-氨基安替吡啉
分光光度法
酚类
pyroligneous acid
4-aminoantipyrine
spectrophotometry
phenolic compound
