Measurement of Trace Metals in Tobacco and Cigarette Ash by Inductively Coupled Plasma-Atomic Emission Spectroscopy
Measurement of Trace Metals in Tobacco and Cigarette Ash by Inductively Coupled Plasma-Atomic Emission Spectroscopy
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电感耦合等离子体原子发射光谱法测定烟草和卷烟灰中的痕量金属
DOI：
10.1021/ed080p83
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发表时间：
2003
影响因子：
3
通讯作者：
B. Finlayson‐Pitts
中科院分区：
文献类型：
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作者：
Wenxian Wang;B. Finlayson‐Pitts
本文报道的ICP-AES实验适用于初级或高级本科仪器分析实验室。本实验的目的是分析香烟烟丝、香烟过滤嘴和香烟燃烧时产生的烟灰中存在的微量金属。研究人员使用了两种不同品牌的香烟，一种带过滤嘴，一种不带过滤嘴。在烟雾通过过滤器之前和之后对过滤器进行了分析。用浓硝酸分别在室温和100℃条件下提取微量金属，考察提取效率。用氯化锌和三氯化铁对部分烟草样品进行加标处理，评价其回收率。烟草、滤嘴和烟灰中均含有锌和铁，而铬仅在烟灰中超标。与烟草相比，这些金属在烟灰中的富集系数为~ 4 （Zn）、12-17 （Fe）和≥2 （Cr）。如果实验室有足够的时间，这个实验可以和我们一人搭档进行。
The ICP–AES experiment reported here is suitable for use in a junior- or senior-level undergraduate instrumental analysis laboratory. The objective of this experiment is to analyze trace metals present in cigarette tobacco, the cigarette filter, and the ash obtained when the cigarette is burned. Two different brands of cigarettes, one with and one without a filter, were used. The filter was analyzed before and after smoke was drawn through it. The trace metals were extracted using concentrated nitric acid at room temperature and at 100 °C respectively, to test the extraction efficiency. Some tobacco samples were spiked with ZnCl2 and FeCl3 to assess the efficiency of the recovery. Zinc and iron are shown to be present in tobacco, filter, and ash, while chromium was above the detection limit only in the ash. These metals are concentrated in the ash compared to the tobacco by factors of ∼4 (Zn), 12–17 (Fe), and ≥ 2 (Cr). If sufficient laboratory time is available, this experiment could be paired with one us...