Infiltration of forest fire and residential wood smoke: an evaluation of air cleaner effectiveness
Infiltration of forest fire and residential wood smoke: an evaluation of air cleaner effectiveness
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DOI：
10.1038/sj.jes.7500640
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发表时间：
2008-09-01
影响因子：
4.5
通讯作者：
Brauer, Michael
中科院分区：
文献类型：
--
作者：
Barn, Prabjit;Larson, Timothy;Brauer, Michael
受森林细颗粒空气污染（空气动力学直径小于2.5毫米的颗粒；PM2.5）影响的社区。资源和住宅木材燃烧需要有效的、基于证据的减少暴露战略。在烟雾发作期间的公共卫生建议通常包括建议社区成员留在室内和使用空气净化器，但关于这些措施的有效性的信息很少。我们的研究试图解决以下目标：测量森林火灾木材烟雾PM2.5的室内渗透因子（F-inf），确定高效微粒空气（HEPA）的有效性。过滤空气净化器对降低室内PM2.5的影响，并分析家庭决定因素Finf和空气净化器有效性（ACE）。我们收集了室内/室外1分钟PM2.5平均值和48小时室外PM2.5。过滤受木材燃烧和森林影响的21个冬季和17个夏季住宅的样本。在2004 - 2005年期间分别重新吸烟。便携式HEPA过滤器空气清洁器在室内操作，在两个采样日中取下过滤器。使用递归模型计算每个家庭的粒子Finf和ACE。我们发现在冬季（n =19）和夏季（n =13），未使用HEPA过滤器天数的平均F-inf +/- SD分别为0.27 +/- 0.18和0.61 +/- 0.27。在HEPA过滤器放置的相应天数，F-inf +/- SD值较低，分别为0.10 +/- 0.08和0.19 +/- 0.20。冬季和夏季平均+/- SD ACE （[Finf无过滤器-F-inf带过滤器]/ F-inf无过滤器）分别为55 +/- 38%和65 +/- 35%。预测窗口数和季节F-inf (P
Communities impacted by fine-particle air pollution (particles with an aerodynamic diameter less than 2.5 mm; PM2.5) from forest. res and residential wood burning require effective, evidence-based exposure-reduction strategies. Public health recommendations during smoke episodes typically include advising community members to remain indoors and the use of air cleaners, yet little information is available on the effectiveness of these measures. Our study attempted to address the following objectives: to measure indoor infiltration factor (F-inf) of PM2.5 from forest fires wood smoke, to determine the effectiveness of high-efficiency particulate air (HEPA). filter air cleaners in reducing indoor PM2.5, and to analyze the home determinants of Finf and air cleaner effectiveness (ACE). We collected indoor/outdoor 1-min PM2.5 averages and 48-h outdoor PM2.5. filter samples for 21 winter and 17 summer homes impacted by wood burning and forest. re smoke, respectively, during 2004 - 2005. A portable HEPA filter air cleaner was operated indoors with the filter removed for one of two sampling days. Particle Finf and ACE were calculated for each home using a recursive model. We found mean F-inf +/- SD was 0.27 +/- 0.18 and 0.61 +/- 0.27 in winter (n =19) and summer (n =13), respectively, for days when HEPA filters were not used. Lower F-inf +/- SD values of 0.10 +/- 0.08 and 0.19 +/- 0.20 were found on corresponding days when HEPA filters were in place. Mean +/- SD ACE ([Finf without filter -F-inf with filter]/ F-inf without filter) in winter and summer were 55 +/- 38% and 65 +/- 35%, respectively. Number of windows and season predicted F-inf ( P