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Toxic Metals in Liquid and Aerosol from Pod-Type Electronic Cigarettes
Journal of Analytical Toxicology ( IF 2.5 ) Pub Date : 2020-12-23 , DOI: 10.1093/jat/bkaa185
Naudia Gray 1 , Mary Halstead 2 , Liza Valentin-Blasini 1 , Clifford Watson 1 , R Steven Pappas 1
Affiliation  

Abstract
High-quality, accurate data on liquid contents and aerosol emissions from electronic nicotine delivery systems (ENDS, e.g., e-cigarettes) are crucial to address potential health concerns as these devices evolve and mature. Metals are an important class of ENDS constituents that merit attention as they have various health implications. Proper sampling, handling and aerosol trapping materials are essential to generate accurate quantitative metal data and to reduce the likelihood of inaccurate results originating from inappropriate collection vessels and materials that contribute to high background levels. Published methods that meet these criteria were applied to the analyses of chromium, nickel, copper, zinc, cadmium, tin and lead in liquid and aerosol from mint/menthol and tobacco flavors of currently popular pod-based devices from three manufacturers. Metal concentrations from pods that had not been used for generating aerosol ranged from below our lowest reportable level to 0.164 µg/g for Cr, 61.3 µg/g for Ni, 927 µg/g for Cu, 14.9 µg/g for Zn, 58.2 µg/g for Sn and 2.56 µg/g for Pb. Cadmium was included in our analyte panel and was not present above detection limits in liquid or aerosol. Aerosol metal concentrations (using a 55-mL puff) ranged from below our lowest reportable level to 29.9 ng/10 puffs for Cr, 373 ng/10 puffs for Ni, 209 ng/10 puffs for Cu, 4,580 ng/10 puffs for Zn, 127 ng/10 puffs for Sn and 463 ng/10 puffs for Pb. Our results showed some metal delivery from all the products examined and highly variable metal levels between manufacturer, brand and package.


中文翻译:

烟弹式电子香烟液体和气溶胶中的有毒金属

摘要
随着电子尼古丁输送系统(ENDS,例如电子香烟)的液体内容物和气溶胶排放的高质量、准确数据对于解决这些设备的发展和成熟带来的潜在健康问题至关重要。金属是一类重要的 ENDS 成分,值得关注,因为它们对健康有多种影响。正确的采样、处理和气溶胶捕集材料对于生成准确的定量金属数据和减少因不适当的收集容器和材料导致高背景水平而产生不准确结果的可能性至关重要。符合这些标准的已发表方法被应用于铬、镍、铜、锌、镉、来自三个制造商的当前流行的基于豆荚的设备的薄荷/薄荷醇和烟草口味的液体和气溶胶中的锡和铅。未用于产生气溶胶的容器中的金属浓度范围从低于我们的最低报告水平到 Cr 的 0.164 µg/g、Ni 的 61.3 µg/g、Cu 的 927 µg/g、Zn 的 14.9 µg/g、58.2 µg /g 的 Sn 和 2.56 µg/g 的 Pb。镉包含在我们的分析物面板中,并且在液体或气溶胶中的含量不超过检测限。气溶胶金属浓度(使用 55 毫升粉扑)范围从低于我们的最低报告水平到 Cr 29.9 ng/10 粉扑、Ni 373 ng/10 粉扑、Cu 209 ng/10 粉扑、Zn 4,580 ng/10 粉扑, Sn 为 127 ng/10 次,Pb 为 463 ng/10 次。我们的结果显示,所有检查的产品都有一些金属含量,并且制造商之间的金属含量差异很大,
更新日期:2020-12-23
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