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描述PM_2.5排放量和来自加利福尼亚州住宅的香烟燃烧的有机成分的时间演变

Jennifer Ofodile¹, Michael R Alves¹, Yutong Liang¹

¹Department of Environmental Science, Policy, and Management, University of California, Berkeley, Berkeley, California 94720, United States.

Environmental science & technology

|March 4, 2024

概括

烧香会将有机细颗粒物 (PM2.5) 释放到家中,主要是极性和有氧化合物. 这些颗粒还可以吸收其他室内污染物,影响吸入暴露.

科学领域:

环境化学环境化学
室内空气质量室内空气质量
气溶科学气溶科学

背景情况:

在西方室内环境中,香料产生的有机气溶的化学成分存在有限的研究.
香香的使用是常见的,可能有助于室内空气污染.
了解香料中微粒颗粒物 (PM2.5) 的组成和行为对于评估健康风险至关重要.

研究的目的:

为了描述室内烧香产生的有机PM2.5的化学成分.
为了确定烧香的排放因子 (EFs).
为了研究室内半挥发性有机化合物 (SVOCs) 对香料生成的PM2.5.5的气体粒子相分割.

主要方法:

烧香的实验是在一个空置的单户住宅中进行的.
使用二维气体染色学与高分辨率飞行时间质谱学 (GC×GC-HR-ToF-MS) 结合分析有机PM2.5成分.
半挥发性热溶解气溶气色谱 (SV-TAG) 用于SVOC分析.

主要成果:

有机PM2.5的EFs范围为7至31毫克g-1的烧香.
气溶含有丰富的极地和有氧物种,包括生物质燃烧的标记物,如levoglucosan.
九个室内SVOC在香活动中显示出度增加,与PM2.5相关,表明分区.

结论:

烧香显著导致室内有机PM2.5,其组成因香料类型而异.
低挥发性SVOC分离到香料生成的PM2.5,增加了潜在的吸入暴露.
直接排放和SVOC分区都会影响室内空气质量和在使用香水期间和之后的暴露.

关键词:

GC×GC 是一个GC.对于PM2.5来说,这是一个很好的例子.值得注意的是,SVOCs是SVOCs.化学物种的化学特征他们烧香,烧香.室内空气室内空气有机物有机物有机物有机物

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