Ultrafine Particles Emitted through Routine Operation of a Hairdryer
Ultrafine Particles Emitted through Routine Operation of a Hairdryer
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吹风机日常操作时排放的超细颗粒
DOI：
10.1021/acs.est.0c08564
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发表时间：
2021
影响因子：
11.4
通讯作者：
Freedman, Miriam Arak
中科院分区：
文献类型：
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作者：
Dawson, Joseph Nelson;DiMonte, Kristin E.;Griffin, Matthew J.;Freedman, Miriam Arak
颗粒物是人类健康的一个大问题。精细和超细颗粒物已被证明会对人类健康产生负面影响;例如，它会导致心肺疾病。目前的监管目标是颗粒的大小，但组成也会影响毒性。室内空气污染源对人类健康构成了独特的挑战，因为人类有可能暴露在密闭空间的高浓度空气中。在这项工作中，六个吹风机内的有机玻璃腔室中操作，并与透射电子显微镜和能量色散光谱分析他们的排放。所有的吹风机都被发现排放出超细的铁、碳和铜。此外，来自两个吹风机的发射主要包含超细范围（<100 nm）的银纳米颗粒。测量不含银的吹风机的超细颗粒排放率，发现其低于燃气炉和电燃烧器的超细颗粒排放。根据它们的大小，这些颗粒可以留在肺部或在吸入后进入血液，并可能造成长期的健康影响。
Particulate matter is a large concern for human health. Fine and ultrafine particulate matter has been shown to negatively impact human health; for example, it causes cardiopulmonary diseases. Current regulation targets the size of the particles, but composition also impacts toxicity. Indoor sources of air pollution pose unique challenges for human health due to the potential for human exposure to high concentrations in confined spaces. In this work, six hairdryers were each operated within a plexiglass chamber, and their emissions were analyzed with transmission electron microscopy and energy-dispersive spectroscopy. All hairdryers were found to emit ultrafine iron, carbon, and copper. In addition, emissions from two hairdryers primarily contained silver nanoparticles in the ultrafine range (<100 nm). The ultrafine particle emission rates for the hairdryers that did not contain silver were measured and found to be lower than ultrafine particle emissions by gas stoves and electric burners. Based on their size, these particles can either remain in the lung or enter the bloodstream after inhalation and potentially cause long-term health effects.