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Evaluation of Elemental Cadmium as a Marker for Environmental Tobacco Smoke

机译：元素镉作为环境烟草烟雾标志物的评估

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摘要

The evaluation of cadmium as a marker of environmental tobacco smoke (ETS) has been carried out on the basis of several criteria. First, cadmium was found to be a good indicator source in ETS. For example, elevated Cd concentrations (4-38 ng/m~3) were measured in smoking areas compared with less than 2 ng/m~3 in ETS-free indoor air. Secondly, the cadmium concentrations in various types of unburnt cigarette tobacco are not significantly different, with the average concentration being 1.28 ± 0.17 μg of Cd/g of tobacco. Furthermore, the emission fraction of cadmium is quite large: approximately 44% of the total cadmium in cigarette tobacco is released in ETS. Cadmium in ETS was primarily found in the small particles (diameter less than 1 μm), indicating Cd to be a good marker of respirable ETS. Finally, the Cd concentration in ETS was observed to decay slowly and to increase linearly with the strength of the source. On the basis of these evaluations, it is concluded that cadmium is a good marker of ETS.
机译：根据几种标准对作为环境烟草烟雾（ETS）标记的镉进行了评估。首先，发现镉是ETS中良好的指标来源。例如，在吸烟区测得的Cd浓度升高（4-38 ng / m〜3），而在无ETS的室内空气中，镉的浓度低于2 ng / m〜3。其次，各种未燃卷烟烟草中的镉浓度没有显着差异，平均浓度为1.28±0.17μgCd / g烟草。此外，镉的排放比例很大：ETS释放了卷烟中镉总量的约44％。 ETS中的镉主要存在于小颗粒（直径小于1μm）中，表明Cd是可呼吸ETS的良好标志。最后，观察到ETS中的Cd浓度缓慢衰减，并随源强度线性增加。根据这些评估，可以得出结论，镉是ETS的良好标志。

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  • 来源
    《Environmental Science & Technology》 |1995年第9期|p.2311-2316|共6页
  • 作者

    DE WU; SHELDON LANDSBERGER; SUSAN M. LARSON;

  • 作者单位

    Department of Nuclear Engineering, University of Illinois, 214 Nuclear Engineering Laboratory, 103 South Goodwin Avenue, Urbana, Illinois 61801;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 环境化学;
  • 关键词

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