Carbon monoxide was determined by nondispersive infrared photometry. Tar yield was calculated as TPM yield minus nicotine and water yields. (16) Gas chromatography (GC) was used to determine nicotine (17) and water (18) in TPM. In the present study, total particulate matter (TPM) was collected on a Cambridge glass-fiber filter (CF) and determined gravimetrically. The smoking process on the smoking machine was initiated 5 min (☑ min) after crushing the capsules.įor analytical purposes, cigarette smoke can be separated into the particulate phase, matter which remains on a Cambridge filter pad after passing smoke through it, and the gas-vapor phase, matter which passes through the Cambridge filter pad. The movement was blocked when the lever intrusion into the filter reached a preset value, usually 3 mm. A lever, perpendicular to the cigarette axis, was lowered onto the immobilized cigarettes so as to press the filter at the capsule location. In order to minimize the variability possibly associated with the release of the contents of the capsule, the capsules were crushed using a mechanical device. The capsule-containing cigarettes were smoked with capsules crushed and uncrushed.
#Marlboro 100s iso
This standard differs from the ISO 3308 standard in an increased puff volume of 55 mL, a puffing frequency of 2 puffs per minute, and the additional provision that the cigarette ventilation holes are blocked. (14) In the present study, smoke deliveries from one commercial cigarette brand smoked under Health Canada Intense (HCI) machine-smoking conditions (15) are also presented for comparison. Cigarettes were machine-smoked according to the ISO 3308 standard of one 35-mL puff taken over 2 s every minute. Smoking of the cigarettes and mainstream smoke trapping and analyses were contracted to an external accredited laboratory, Labstat International ULC (Canada).
The results from investigations performed in this study did not show any meaningful increase in the yield of smoke constituents listed by Health Canada as a result of crushing the menthol capsule in the cigarette filter. Delivery of the other measured gas-phase components remained unaffected. Regarding the gas-phase smoke constituents, it was found that the delivery of lipophilic volatiles was reduced when the capsule was crushed. Except for the intended presence of menthol flavors in smoke, no meaningful differences were identified in the yields of the remaining measured particulate-phase smoke constituents. Data obtained from measurements using cigarettes with the capsule crushed and uncrushed were compared. The yields of 46 Health Canada smoke components were determined according to the International Organization for Standardization (ISO) machine-smoking regime. It also includes results from a market survey of a selection of commercial cigarette brands with menthol capsules representing the different designs for this type of product available in different markets worldwide. The present study investigates the possible mechanisms underlying differences in smoke constituent deliveries following the crushing of a menthol capsule in a cigarette filter. At the same time, concerns have been expressed that filter performance could be affected by the crushing of the capsule therein, altering mainstream smoke constituent yields, ultimately with the potential to impact the toxicity of these products.
Cigarettes with menthol capsules embedded in the filter have been introduced recently in many countries.
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