摘要：建立了微波消解一石墨炉原子吸收法测定卷烟中重金属元素As、Pb、Cr、Cd、Ni的方法,检测了全国10种不同牌号卷烟中的上述重金属元素含量.结果表明,As、Pb、Cr、Cd、Ni的较适宜的灰化温度和原子化温度分别为:1400、700、1300、600、1000℃和2 100、1750、2 000、1300、2 150℃;As、Pb、Cr、Cd、Ni的平均回收率分别为97.3%、98.9%、101.2%、100.1%、102.6%;RSD分别为4.6%、3.0%、3.6%、2.2%、3.3%;检出限分别为0.147、0.265、0.146、0.026、0.172μg/L.所测卷烟样品中的5种元素含量分别为As:0.101～0.900μg/支,Pb:1.258 ～ 2.119μg/支,Cr:0.129～0.680μg/支,Cd:0.616～2.012μg/支,Ni:0.380～0.801μg/支.%A method for determining Arsenic (As), Lead (Pb), Cadmium (Cr), Chromium (Cd), Nickle (Ni) in cigarette by graphite furnace atomic absorption spectrometry was developed and 10 cigarette brand samples were analyzed. The results showed that the optimized pyrolysis temperature and atomic temperature for As, Pb, Cr, Cd, Ni were 1 400, 700, 1 300, 600, 1 000 ℃ and 2 100, 1 750, 2 000, 1 300, 2150 ℃, respectively. The recoveries of As, Pb, Cr, Cd, Ni were 97.3％, 98.9％, 101.2％, 100.1％ and 102.6％with the RSDS of 4.6％, 3.0％, 3.6％, 2.2％ and 3.3％, and the detection limits were 0.147, 0.265, 0.146, 0.026 and 0.172 μg/L,respectively. Content of all the samples were Pb＞Cd＞Ni＞Cr＞As and As were between 0.101 ～ 0.234 μg/cig, Pb between 1.258 ～2.108 μg/cig, Cr between 0.129 ～ 0.680 μg/cig, Cd between 0.616 ～ 2.012 μg/cig and Ni between 0.380 ～ 0.801 μg/cig。
