可调激光法测定加热卷烟水分活度  

Measurement of water activity of heated tobacco products by tunable laser method

作　　者：司晓喜 王萝萍 钱颖颖 罗萌柔 赵杨 常岭 李翔宇[5] 刘志华 朱婷 SI Xiaoxi;WANG Luoping;QIAN Yingying;LUO Mengrou;ZHAO Yang;CHANG Ling;LI Xiangyu;LIU Zhihua;ZHU Ting(Yunnan Key Laboratory of Tobacco Chemistry,R&D Center of China Tobacco Yunnan Industrial Co.,Ltd.,Kunming 650231,China;Faculty of Environmental Science&Engineering,Kunming University of Science and Technology,Kunming 650500,China;School of Chemical Engineering,Kunming University of Science and Technology,Kunming 650500,China;Henan Cigarette Industry Tobacco Sheet Co.,Ltd.,Xuchang 461000,Henan,China;China National Tobacco Quality Supervision and Test Center,Zhengzhou 450001,China;China Tobacco Schweitzer(Yunnan)Reconstituted Tobacco Co.,Ltd.,Yuxi 653100,Yunnan,China)

机构地区：[1]云南省烟草化学重点实验室云南中烟工业有限责任公司技术中心,昆明市650231 [2]昆明理工大学环境科学与工程学院,昆明市650500 [3]昆明理工大学化学工程学院,昆明市650500 [4]河南卷烟工业烟草薄片有限公司,河南省461000 [5]国家烟草质量监督检验中心,郑州450001 [6]中烟施伟策(云南)再造烟叶有限公司,云南省653100

出　　处：《烟草科技》2023年第7期57-65,共9页Tobacco Science & Technology

基　　金：中国烟草总公司标准项目“加热卷烟水分活度的测定”(2020QB010);云南中烟工业有限责任公司科技项目“烟草制品气溶胶理化和生物特性研究及应用”(JB2022HX01);云南省科技厅科技计划项目“技术创新人才培养对象项目”(202105AD160006);云南省科技计划基础研究青年项目“尼古丁衍生物在加热不燃烧卷烟中的效用评价研究”(2019FD088)。

摘　　要：为了有效监控加热卷烟的水分活度(aw),选择可调激光传感器法,通过详细的样品制备和保存条件、测试条件及联合实验等方法学研究,建立了适用于加热卷烟aw测定的方法。结果表明:①该方法抗发烟剂和薄荷醇干扰,选择性好。②样品无需均质化处理,环境暴露的时间控制在1 min内,拆封后样品可在常温密闭条件下存放3 h,-18℃密闭条件下存放30 d,样品测定前需恢复至室温。③优选丝状样品量为0.8~1.0 g,颗粒状样品量为2.0~4.0 g,测定次数为2次,以2 min内aw变化值小于0.001作为读数终点。④7个代表性加热卷烟样品在5个实验室联合实验的重复性限(r)在0.0027~0.0061之间,再现性限(R)在0.0045~0.0155之间,应用于不同类型加热卷烟测试结果良好。To effectively monitor the water activity(aw)of heated tobacco products,a method for determining aw of heated tobacco products was developed using a tunable laser sensor.Detailed methodological studies were conducted based on sample preparations and storage conditions,test conditions,and collaborative experiments.The results showed that:1)The method could avoid the interference of atomization agents and menthol,and had good selectivity.2)Sample materials did not need to be homogenized,and the environmental exposure time should be controlled within 1 min.After unpacking,the samples could be stored for 3 h at room temperature or 30 d at-18℃under sealed conditions and needed to be returned to room temperature prior to testing.3)The optimized measurement conditions were as follows:the preferred sample mass 0.8-1.0 g for shredded sample and 2.0-4.0 g for granular sample,using an aw variation value of less than 0.001 within 2 min as the reading endpoint,and testing twice.4)When applied to different heated tobacco product materials,the measurement results were satisfactory with regard to repeatability limits(r)ranging from 0.0027 to 0.0061 and reproducibility limits(R)ranging from 0.0045 to 0.0155 on seven representative heated tobacco product samples in a five-laboratory collaborative experiment.

关 键 词：加热卷烟 水分活度(aw) 可调激光传感器 质量控制 

分 类 号：TS47[农业科学—烟草工业] TS411.1