4-氨基安替吡啉分光光度法测定木醋液中酚类含量  

Determination of Phenolic Content in Pyroligneous Acid by 4-Aminoantipyrine Spectrophotometry

作　　者：石文[1] 张长森[1] 徐兴敏[1] 张少辉[1] 张瑞芹[1] 

机构地区：[1]郑州大学化学系环境科学研究院,河南郑州450001

出　　处：《郑州大学学报（理学版）》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

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%.

关 键 词：木醋液 4-氨基安替吡啉 分光光度法 酚类 

分 类 号：O656.3[理学—分析化学]