Data on Chemistry Reported by Researchers at Technology Center (Direct Extraction and Determination of Free Nicotine in Cigarette Smoke).

A recent study conducted at the Technology Center has presented data on the direct extraction and determination of free nicotine in cigarette smoke. The accurate measurement of free nicotine content is important for assessing cigarette quality, studying harm and addiction, and reducing tar levels. The researchers developed a method using cyclohexane for direct extraction and gas chromatography-mass spectrometry for detection, which offers simplicity, improved precision, better detection limits, and reduced interference. The study found that the content of free nicotine in commercially available cigarette brands ranged from 0.376 to 0.716 mg/cig, with an average of 0.540 mg/cig, and accounted for 39.1%-88.8% of the total nicotine content. [Extracted from the article]