电导滴定法测定桉木浆中酚羟基和羧基  

Determination of phenolic hydroxyl and carboxyl groups in kraft pulp from Eucalyptus by conductometric titration

作　　者：欧义芳[1] 谌凡更[1] 李忠正[2] 

机构地区：[1]中国科学院广州化学研究所纤维素化学开放研究实验室,广州510650 [2]南京林业大学化学工程学院,南京210037

出　　处：《纤维素科学与技术》1998年第4期35-40,共6页Journal of Cellulose Science and Technology

摘　　要：两相含水有机介质中电导滴定法测定接木浆中酚羟基和羟基的方法是可行的。较好的滴定条件是：滴定介质为丙酮：吡啶：乙醇：水（40：10：1：1，体积比）；样品浓度为2g/L，滴定剂KOH-异丙醇浓度为0．01mol/L。The contents of phenolic hydroxyl and carboxyl groups in kraft pu;p from Eucalyptus were determined in a heterogeneous system by conductometric titration .The samples were dis-persed in a mixed medium at 25C. Recommended solvent composition was:acetone/pyridine/al-cohol/water （40／10／1／1， V／V／V／V）．0．01mol/L KOH－ iso －propanol solution was used as the titrant. Suitable sample concentration was no more than 2g/L.This method was proved to be feasible and accurate.

关 键 词：桉木浆 酚羟基 羟基 电导滴定 滴定 造纸 纸浆 

分 类 号：TS713[轻工技术与工程—制浆造纸工程] TS749.1