安徽农业科学2009，Vol.37Issue(20)：9332-9333,2.
卡尔费休法快速测定烟用香精中的水分含量
Rapid Determination on the Water Content in Tobacco Essence by Karl Fischer Method
李海燕 1汤丹俞 2肖燕 2王淑华 3施红林 2蔡继宝2
作者信息
- 1. 中国科学技术大学烟草与健康研究中心,安徽合肥,230052
- 2. 云南省烟草质量监督检测站,云南昆明,650106
- 3. 红云红河集团技术中心,云南昆明,650202
- 折叠
摘要
Abstract
[Objective]The study aimed to establish the rapid analysis method to determine water in tobacco essence by Karl Fischer method. [Method] After automatic pre-titration and calibration with cassette reagent, the moisture contents in 4 kinds of tobacco essence were titrated by cassette reagent, and the moisture content in environment was titrated in order to eliminate background interference. At the same time, the recovery rate was calculated according to measured quantity before adding standard, adding standard and measured quantity after adding standard. The relative standard deviation was calculated according to the determination results from 6 parallel determinations on tobacco essence. [Result] Analysis results of determining the moisture contents in tobacco essence by using Karl Fischer method were satisfactory, with the relative standard deviation at 1.65%-2.54% and the recovery rate of 93.46%-106.15%. The determination on the moisture contents in tobacco essence by using Karl Fischer method showed that the moisture contents in 4 kinds of tobacco essence had great difference, which was in 1.49%-5.74% and the result was satisfactory. [Conclusion] Using Karl Fischer method to determine water in tobacco essence was sensitive, accurate, well repeatable, and provided a reference for determining water in tobacco essence.关键词
烟用香精/水分/测定/卡尔费休法Key words
Flavor used for cigarette/ Water/ Ddetermination/ Karl Fischer method分类
化学化工引用本文复制引用
李海燕,汤丹俞,肖燕,王淑华,施红林,蔡继宝..卡尔费休法快速测定烟用香精中的水分含量[J].安徽农业科学,2009,37(20):9332-9333,2.
