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

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.