江西农业学报2018，Vol.30Issue(6)：71-74,79,5.DOI:10.19386/j.cnki.jxnyxb.2018.06.15
重铬酸钾氧化-连续流动法测定烟草中纤维素含量
Determination of Cellulose Content in Tobacco by Using Potassium Dichromate Oxidation-Continuous Flow Method
孔兰芬 1侯英 1潘纯祥 1李赛群 1郑杰 1陶自伟1
作者信息
- 1. 云南同创检测技术股份有限公司,云南 昆明 650106
- 折叠
摘要
Abstract
We established the potassium dichromate oxidation-continuous flow method for the determination of cellulose con-tent in tobacco. In this method, 80％ acetic acid-nitric acid mixed liquor (80％ acetic acid:nitric acid=9.5:0.5) was used to re-move the hemicelluloses and lignin in tobacco samples;under the action of sulfuric acid, the cellulose was oxidized by potassium dichromate into carbon dioxide and water, and the excess potassium dichromate was determined by using continuous flow analyzer. The results showed that:using the acetic acid-nitric acid mixed liquor could effectively remove the hemicelluloses and lignin;the recovery rate by this method was 97. 70％～99. 49％; the intraday RSD varied from 0. 69％ to 1. 61％; the interday RSD was 1.24％. So, this method can be used for the determination of cellulose content in tobacco.关键词
烟草/纤维素/氧化法/连续流动法Key words
Tobacco/Cellulose/Oxidation method/Continuous flow method分类
农业科技引用本文复制引用
孔兰芬,侯英,潘纯祥,李赛群,郑杰,陶自伟..重铬酸钾氧化-连续流动法测定烟草中纤维素含量[J].江西农业学报,2018,30(6):71-74,79,5.
