烟草中部分含氮化合物模拟燃吸生成氨的影响因素

Factors Influencing Ammonia Formation from Some Nitrogenous Compounds in Tobacco by Simulated Combustion

为考察烟草中的含氮化合物在卷烟燃烧过程中生成氨的规律,以烤烟烟丝为基质,采用卷烟模拟燃吸装置研究了燃吸温度、燃吸气氛含氧量及流速和升温速率等因素对烟气中氨的主要前体成分燃吸生成氨的影响。结果表明:1燃吸温度、燃吸气氛含氧量和升温速率对蛋白质、草酸铵、脯氨酸和天冬酰胺等燃吸生成氨均有明显影响,载气流速的影响较小。2低含氧气氛、高升温速率、中温环境可抑制烟草或氨的前体物燃吸生成氨。

In order to investigate the rules of ammonia formation from nitrogenous compounds in tobacco during cigarette combustion,the effects of smoking temperature,oxygen content in and flow rate of smoking atmosphere,and the heating rates on the ammonia formation from the combustion of main ammonia precursors in tobacco were studied with a cigarette smoking simulator.The results showed that：1） Smoking temperature,oxygen content in smoking atmosphere and heating rate obviously affected the ammonia formation from the combustion of protein,ammonium oxalate,proline and asparagine,while the influence of carrier gas flow rate was slight.2） Lower oxygen content in smoking atmosphere,higher heating rate and moderate circumstance temperature could inhibit the formation of ammonia from pyrolysis of tobacco or ammonia＇ s precursors.