Influence of Smoking Procedures on Combustion Temperature of Cigarettes and the Nicotine Content of Cigarette Smoke

Abstract

The work described in this paper has been undertaken to clarify the effects of smoking procedures on combustion temperature of cigarettes and the nicotine content in smoke of domestic commercial cigarettes. Intermittent and continuous smoking were carried out under different puff velocities by means of an artificial smoking apparatus. The measurement of com-bustion-zone temperatures developed during from 5ml/sec. to 60ml/sec. puff velocities were made by 0.05mm. -diameter thermocouples made of platinum and platinum (87%)-rhodium (13%) wire and by an excellent responsive autorecording potentiometer. These values were 794±25.3°C_??_827±21.1°C, irrespective of smoking pro-cedures, but with an exception of 769±9.2°C of 10ml/sec. intermittent puffing. However, the free-burning temperature was 746±31.7°C.
When the cigarette was consumed up to 45mm. in length from the lighted end, the nicotine content in cigarette smoke increased with puff velocity. These values rised linearly from 2.38mg (5ml/sec.) to 6.65mg (60ml/sec.) for inter-mittent puffing, and from 3.29mg (5ml/sec.) to 9.90mg (60m/sec.) for continuous puffing.