Inhalation of particulate matter is associated with adverse health outcomes. The fluorescent portion of supermicron particulate matter has been used as a proxy for bioaerosols. The sources and emission rates of fluorescent particles in residential environments are not well‐understood. Using an ultraviolet aerodynamic particle sizer (UVAPS), emissions of total and fluorescent supermicron particles from common human activities were investigated during the HOMEChem campaign, a test‐house investigation of the chemistry of indoor environments. Human occupancy and activities, including cooking and mopping, were found to be considerable sources of indoor supermicron fluorescent particles, which enhanced the indoor particle concentrations by two orders of magnitude above baseline levels. The estimated total (fluorescent) mass emission rates for the activities tested were in the range of 4‐30 (1‐11) mg per person meal for cooking and 0.1‐4.9 (0.05‐4.7) mg/h for occupancy and mopping. Model calculations indicate that, once released, the dominant fate of coarse particles (2.5‐10 micrometer in diameter) was deposition onto indoor surfaces, allowing for the possibility of subsequent resuspension and consequent exposures over durations much longer than the ventilation time scale. Indoor coarse particle deposition would also contribute to soiling of indoor surfaces.

中文翻译：

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HOMEChem 期间总和荧光超微米粒子的室内排放。

吸入颗粒物与不良健康结果有关。超微米颗粒物的荧光部分已被用作生物气溶胶的代表。居住环境中荧光颗粒的来源和排放率尚不清楚。使用紫外线空气动力学粒度仪 (UVAPS)，在 HOMEChem 活动期间调查了来自常见人类活动的总和荧光超微米粒子的排放，这是一项对室内环境化学的试验室调查。发现人类的居住和活动，包括做饭和拖地，是室内超微米荧光颗粒的重要来源，这使室内颗粒浓度比基线水平高出两个数量级。所测试活动的估计总（荧光）质量排放率范围为每人烹饪 4-30 (1-11) 毫克和占用和拖地 0.1-4.9 (0.05-4.7) 毫克/小时。模型计算表明，一旦释放，粗颗粒（直径 2.5-10 微米）的主要归宿是沉积在室内表面上，从而有可能在比通风时间尺度长得多的持续时间内进行后续再悬浮和随之而来的暴露。室内粗颗粒沉积也会污染室内表面。直径为 5-10 微米）沉积在室内表面上，从而有可能在比通风时间长得多的持续时间内进行后续再悬浮和随后的暴露。室内粗颗粒沉积也会污染室内表面。直径为 5-10 微米）沉积在室内表面上，从而有可能在比通风时间长得多的持续时间内进行后续再悬浮和随后的暴露。室内粗颗粒沉积也会污染室内表面。