Determination of Mercury in Mainstream Cigarette Smoke by Cold Atomic Absorption Spectrometry

A method for determining the mercury(Hg) content in mainstream cigarette smoke by 50 mg/mL acidic potassium permanganate solution collector,microwave digestion,and SnCl₂ reduction-cold vapor atomic absorption spectrometry was investigated,and 12 cigarette smoke samples were tested.The results showed that:1) The recoveries of Hg was from 85.6% to 105.7% with the RSD of less than 5%, the limit of detection of 0.03μg/L and the linear concentration range of 0.1 to 100μg/L.2) Hg content in mainstream cigarette smoke positively correlated with tar to a certain extent.