烟草科技2019，Vol.52Issue(7)：83-88,6.
基于热分析技术的烟丝掺配均匀度测定方法
Determination of cut tobacco blending uniformity based on thermogravimetric analysis
摘要
Abstract
In order to accurately evaluate the uniformity of cut tobacco blending, the similarity of thermogravimetric reaction conversion rate curves of the blended cut tobacco sampled at different time points was calculated, and the blending uniformity of tobacco was calculated on the basis of the coefficient of variation (CV) of the calculated similarities. The proposed method was compared with the industrial standard method. The results showed that: 1) The optimized conditions of thermal analysis were: tobacco particle size 380 μ m, sample volume about 10 mg, the flow rate of environmental gas 50 mL/min, and heating rate 30 ℃/min. 2) The CV of precision test was 0.68%-1.29% and the CV of reproducibility test was 0.25%, which met the requirements of quantitative analysis. 3) There was no significant difference between the results determined by the proposed method and the industrial standard method; moreover, the test results of the proposed method had smaller CV. This method features simple operation, no chemical reagents, high precision and good reproducibility, and is suitable for the accurate determination of cut tobacco blending uniformity.关键词
烟丝掺配均匀度/热重分析法/热失重反应转化率曲线/曲线相似度Key words
Cut tobacco blending uniformity/Thermogravimetric analysis/Thermogravimetric reaction conversion rate curve/Curve similarity分类
轻工纺织引用本文复制引用
张亚平,郑丰,张晓宇,王孝峰,周顺,田振峰,田忠,彭晓萌,朱栋梁..基于热分析技术的烟丝掺配均匀度测定方法[J].烟草科技,2019,52(7):83-88,6.基金项目
中国科学技术协会青年人才托举工程项目(2016QNRC001). （2016QNRC001）
