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Determination of the Moisture Content in Cigarette Paper by Headspace-Karl Fischer Coulometric Method
Received:December 19, 2023  
DOI：10.11980/j.issn.0254-508X.2024.06.015
Key Words:cigarette paper  moisture  karl fischer coulometry method  drying furnace
Fund Project:浙江中烟工业有限责任公司2023年科技项目“卷烟纸对卷烟燃烧过程中烟碱迁移的影响机制”（ ZJZY2023C001）。
Author NameAffiliationPostcode
TANG Xiaodong Technology Center of China Tobacco Zhejiang Industrial Co.， Ltd.， Hangzhou， Zhejiang Province， 310024 310024
SU Yan Technology Center of China Tobacco Zhejiang Industrial Co.， Ltd.， Hangzhou， Zhejiang Province， 310024 310024
ZHAO Lucan Technology Center of China Tobacco Zhejiang Industrial Co.， Ltd.， Hangzhou， Zhejiang Province， 310024 310024
JIANG Jialei Technology Center of China Tobacco Zhejiang Industrial Co.， Ltd.， Hangzhou， Zhejiang Province， 310024 310024
CHEN Xiaoshui Technology Center of China Tobacco Zhejiang Industrial Co.， Ltd.， Hangzhou， Zhejiang Province， 310024 310024
YIN Jie Technology Center of China Tobacco Zhejiang Industrial Co.， Ltd.， Hangzhou， Zhejiang Province， 310024 310024
YANG Yang Technology Center of China Tobacco Zhejiang Industrial Co.， Ltd.， Hangzhou， Zhejiang Province， 310024 310024
PAN Li Technology Center of China Tobacco Zhejiang Industrial Co.， Ltd.， Hangzhou， Zhejiang Province， 310024 310024
DAI Lu Technology Center of China Tobacco Zhejiang Industrial Co.， Ltd.， Hangzhou， Zhejiang Province， 310024 310024
ZHU Shuxiu Technology Center of China Tobacco Zhejiang Industrial Co.， Ltd.， Hangzhou， Zhejiang Province， 310024 310024
XU Shiqiang Technology Center of China Tobacco Zhejiang Industrial Co.， Ltd.， Hangzhou， Zhejiang Province， 310024 310024
YU Fei Technology Center of China Tobacco Zhejiang Industrial Co.， Ltd.， Hangzhou， Zhejiang Province， 310024 310024
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Abstract:In this study， a headspace-Karl Fischer coulometric method was established to determine the moisture content in cigarette paper. By optimizing the experimental conditions such as heating temperature， titration time， sample shape and sample size， the moisture content in cigarette paper was quickly determined. The results showed that the optimum conditions for detecting the moisture content of cigarette paper were as follows： drying furnace temperature was 120 ℃， adopting delay time termination mode， titration time was 10 min， sample mass was 0.06 g. The recoveries of the method were 95.46%~104.99% and the relative standard deviations were 1.12%~4.07% at different spiked levels. Compared with oven method， halogen method and thermal conductivity detection by gas chromatography （GC-TCD） method， the determination results were close， and met the relevant requirements of GB/T 462—2008. The Headspace-Karl Fischer coulometric method could extract water more fully， and truly reflect the moisture content in the sample. Headspace-Karl Fischer coulometric method is simple， rapid， accurate and reliable， and suitable for batch analysis of moisture content in cigarette paper.
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