摘要
在现行的卡伯值测定方法之前采用羟汞化—脱汞两段预处理 ,可以将浆中的己烯糖醛酸基和其他干扰测定的碳水化合物衍生结构的基团除去 。
The Kappa number determination can be used to analyse the amount of residual lignin in kraft pulps if the procedure is preceded by a two_step treatment with Hg(Ac) 2 and NaBH 4.This treatment efficiently removes not only hexeneuronic acid but also a variety of other structures which are able to consume permanganate.The modifided Kappa number method has been used for determination of 'true'lignin content in pulps.
出处
《造纸科学与技术》
北大核心
2002年第2期10-12,共3页
Paper Science & Technology
基金
国家自然科学基金 (2 99760 17)资助项目
