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Residential wood stove use and indoor exposure to PM2.5 and its components in Northern New England.
Journal of Exposure Science and Environmental Epidemiology ( IF 4.5 ) Pub Date : 2019-06-28 , DOI: 10.1038/s41370-019-0151-4
Abby F Fleisch 1, 2 , Lisa B Rokoff 3 , Eric Garshick 4, 5 , Stephanie T Grady 5, 6 , Jonathan W Chipman 7 , Emily R Baker 8 , Petros Koutrakis 9 , Margaret R Karagas 8, 10
Affiliation  

BACKGROUND Residential wood stove use has become more prevalent in high-income countries, but only limited data exist on indoor exposure to PM2.5 and its components. METHODS From 2014 to 2016, we collected 7-day indoor air samples in 137 homes of pregnant women in Northern New England, using a micro-environmental monitor. We examined associations of wood stove use with PM2.5 mass and its components [black carbon (BC), organic and elemental carbon and their fractions, and trace elements], adjusted for sampling season, community wood stove use, and indoor activities. We examined impact of stove age, EPA-certification, and wood moisture on indoor pollutants. RESULTS Median (IQR) household PM2.5 was 6.65 (5.02) µg/m3 and BC was 0.23 (0.20) µg/m3. Thirty percent of homes used a wood stove during monitoring. In homes with versus without a stove, PM2.5 was 20.6% higher [although 95% confidence intervals (-10.6, 62.6) included the null] and BC was 61.5% higher (95% CI: 11.6, 133.6). Elemental carbon (total and fractions 3 and 4), potassium, calcium, and chloride were also higher in homes with a stove. Older stoves, non-EPA-certified stoves, and wet or mixed (versus dry) wood were associated with higher pollutant concentrations, especially BC. CONCLUSIONS Homes with wood stoves, particularly those that were older and non-EPA-certified or burning wet wood had higher concentrations of indoor air combustion-related pollutants.

中文翻译:

在新英格兰北部,居民使用木柴灶以及室内暴露于PM2.5及其成分。

背景技术在高收入国家,家用木灶的使用已变得越来越普遍,但是关于室内暴露于PM2.5及其成分的数据很少。方法2014年至2016年,我们使用微环境监测仪在新英格兰北部的137个孕妇家庭中收集了7天的室内空气样本。我们检查了木质炉具使用与PM2.5质量及其成分[黑碳(BC),有机和元素碳及其组分以及微量元素]的关联,并根据采样季节,社区木质炉具使用和室内活动进行了调整。我们检查了炉龄,EPA认证和木材水分对室内污染物的影响。结果家庭中位数(IQR)PM2.5为6.65(5.02)µg / m3,BC为0.23(0.20)µg / m3。监视期间有30%的家庭使用了柴火炉。在带或不带炉灶的家庭中,PM2。5高出20.6%[尽管95%置信区间(-10.6,62.6)包括空值),而BC高出61.5%(95%CI:11.6,133.6)。带炉灶的家庭中的元素碳(总量以及3和4的分数),钾,钙和氯化物也较高。较旧的炉灶,未经EPA认证的炉灶以及潮湿或混合(相对于干燥)的木材都与较高的污染物浓度有关,尤其是卑诗省。结论带有木灶的房屋,尤其是那些较旧且未经EPA认证或燃烧湿木材的房屋,其室内空气燃烧相关污染物的浓度更高。未经EPA认证的炉灶,潮湿或混合(相对于干燥)的木材与较高的污染物浓度有关,尤其是卑诗省。结论带有木灶的房屋,尤其是那些较旧且未经EPA认证或燃烧湿木材的房屋,其室内空气燃烧相关污染物的浓度更高。未经EPA认证的炉灶,潮湿或混合(相对于干燥)的木材与较高的污染物浓度有关,尤其是卑诗省。结论带有木灶的房屋,尤其是那些较旧且未经EPA认证或燃烧湿木材的房屋,其室内空气燃烧相关污染物的浓度更高。
更新日期:2019-11-18
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