Effect of different concentration potassium oxalate on pyrolysis characteristics of cigarette paper and mainstream smoke

Potassium oxalate solution with different concentration was added to cigarette paper to investigate its effect on pyrolysis characteristics of cigarette paper and mainstream smoke through thermal analysis and tobacco smoke analysis. The results showed that tar and CO content decreased when potassium oxalate was added to cigarette paper; and U-shape profile could be found to illustrate the trend of puffs, CO and tar in smoke with potassium oxalate's concentration increase. More details showed that tar and CO content minimized when potassium oxalate's concentration was 1.5%;thermal analysis indicated that cigarette paper initially pyrolyzed at a relatively lower temperature with higher potassium oxalate concentration, and active energy decreased at 200~300℃.