卷烟主流烟气中氨测定方法的改进及不同抽吸模式下的氨释放量比较

Improvement of Determination of Ammonia in Mainstream Cigarette Smoke and Comparison of Ammonia Deliveries Under Different Smoking Regimes

摘要: 为了提高卷烟主流烟气中氨(NH₃)的测定效率,对现行标准YC/T 377-2010的离子色谱(IC)测定方法进行了改进,并考察了ISO和加拿大深度抽吸(HC)模式下卷烟主流烟气中NH₃释放量变化。结果表明:①采用Ion Pac CS16分析柱、等度洗脱、0.60 mL/min流速和50 mmol/L甲烷磺酸(MSA)淋洗液,15 min内即可完成单个卷烟样品中NH₃的测定;②NH₃的加标回收率为97.53%~99.13%,相对平均标准偏差(RSD)<5%;③HC模式下主流烟气中NH₃含量明显高于ISO抽吸模式下的含量。

Abstract: In order to improve the determination efficiency of ammonia(NH₃)in mainstream cigarette smoke, ion chromatography(IC)method described in the current standard(YC/T 377-2010)was improved, meanwhile NH₃ deliveries in mainstream cigarette smoke under ISO and Health Canada(HC)smoking regimes were compared. The results showed that: 1)with CS16 column under an isocratic elution with 50 mmol/L of methane sulfonic acid(MSA)as mobile phase at the flow rate of 0.60 mL/min, the determination of NH₃ in one single sample could be completed within 15 minutes; 2)the recoveries of NH₃ ranged from 97.53% to 99.13% with the relative standard deviation(RSD)lower than 5%; 3)the NH₃ delivery in mainstream smoke of cigarette smoked under HC regime was significantly higher than that under ISO regime.