冷原子吸收光谱法测定卷烟主流烟气中的汞

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

摘要: 考察了50 mg/mL酸性高锰酸钾溶液捕集剂、微波消解、SnCl₂还原,流动注射-冷原子吸收光谱法测定卷烟主流烟气中汞的方法,并采用该方法测定了12个卷烟烟气样品。结果表明:①方法的线性范围为0.1~100μg/L,检出限0.03μg/L,RSD<5%,回收率85.6%~105.7%;②卷烟主流烟气中的汞含量与焦油量具有一定的相关性。

Abstract: 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.