摘要
为提高离子色谱（IC）法测定卷烟主流烟气中氨的待测液的稳定性,分析了57种卷烟主流烟气中氨与部分挥发性羰基化合物（甲醛、乙醛、丙酮、丙烯醛、丙醛、巴豆醛和2-丁酮）的偏相关性;根据偏相关分析结果,以甲醛-HCl混合溶液（甲醛质量分数为15%,HCl物质的量浓度为100 mmol/L）作为萃取液对现行的检测方法（YC/T 377—2010）进行了改进,并考察了5种卷烟样品氨待测液的稳定性。结果表明：1主流烟气中的氨与甲醛呈极显著负相关,且二者在氨的待测溶液中会协同升高;2改进现有IC方法的萃取液后,5种卷烟样品的氨待测液经过24 h仍然比较稳定;3方法改进后,检出限为0.30μg/支,加标回收率为97.05%-102.40%,日间相对标准偏差（RSD）为1.28%。该方法较好地解决了待测液氨检测结果随时间不断升高的问题,适用于分析卷烟主流烟气中氨的释放量。
In order to improve the stability of the test solution extracted from mainstream cigarette smoke for determining ammonia by ion chromatography （IC）, the partial correlation of ammonia to some carbonyl compounds （formaldehyde, acetaldehyde, acetone, acrolein, propaldehyde, crotonaldehyde and 2-butanone） in mainstream smoke of 57 cigarette samples was analyzed. On the basis of partial correlation analysis results, the extraction solution specified in standard YC/T 377-2010 was replaced by formaldehyde-HC1 solution （15% formaldehyde and 100 mmol/L HC1）, and the stability of test solution was investigated with 5 cigarette samples. The results showed that： i） There was a significantly negative correlation between the deliveries of ammonia and formaldehyde in mainstream cigarette smoke, the two increased coordinately in the test solution. 2） The test solutions of the 5 samples were quite stable in 24 hours. 3） The limit of detection of the improved method was 0.30 μg/cig and the recoveries ranged from 97.05% to 102.40% with the inter-day relative standard deviation （RSD） of 1.28%. The improved method resolved the problem that the concentration of ammonia in test solution increased with the proceeding of time, and it was suitable for analyzing the delivery of ammonia in mainstream cigarette smoke.
出处
《烟草科技》
EI
CAS
CSCD
北大核心
2015年第2期27-31,46,共6页
Tobacco Science & Technology
基金
江苏中烟工业有限责任公司科技项目"卷烟主流烟气中氨分析的影响因素研究"(201208)
关键词
主流烟气
羰基化合物
氨
甲醛
偏相关性
萃取液
乌洛托品
Mainstream cigarette smoke
Carbonyl compound
Ammonia
Formaldehyde
Partialcorrelation
Extraction solution
Urotropin
