Indoor exposures to air pollutants and allergens in the homes of asthmatic children in inner-city Baltimore
Indoor exposures to air pollutants and allergens in the homes of asthmatic children in inner-city Baltimore
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DOI：
10.1016/j.envres.2004.07.018
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发表时间：
2005-06-01
影响因子：
8.3
通讯作者：
Eggleston, PA
中科院分区：
文献类型：
--
作者：
Breysse, PN;Buckley, TJ;Eggleston, PA
本文介绍了室内空气污染物浓度和过敏原水平收集的100个巴尔的摩城市哮喘儿童参与哮喘干预试验的家庭。收集了72小时以上的颗粒物（PM），NO2和O-3样品在孩子的卧室。还使用便携式直接读数浊度计评估了时间分辨PM。从孩子的卧室、家庭活动室和厨房收集灰尘过敏原样本。平均PM10浓度为56.5 +/- 40.7 μ g/m3，比PM2.5浓度（N = 90）45.1 +/- 37.5 μ g/m3高25%。使用浊度计测量的PM浓度是浓度一致的，并且与重力估计高度相关。吸烟家庭的PM2.5和PM10平均浓度比不吸烟家庭高33-54 μ g/m3，每吸一根烟，室内PM2.5和PM10浓度增加1.0 μ m/m3。NO2和O-3样品的大百分比，分别为25%和75%，低于检测限。平均NO2室内浓度为31.6 +/- 40.2 ppb，而臭氧季节的平均室内O-3浓度为3.3 +/- 7.7 ppb。过敏原的水平与其他市中心的水平相似。本文提出的结果表明，哮喘儿童在巴尔的摩暴露于过敏原和室内空气污染物升高。了解这种综合的伤害可能有助于解释市中心和非市中心儿童之间哮喘负担的差异。(c)2004年爱思唯尔公司All rights reserved.
This paper presents indoor air pollutant concentrations and allergen levels collected from the homes of 100 Baltimore city asthmatic children participating in an asthma intervention trial. Particulate matter (PM), NO2, and O-3 samples were collected over 72 h in the child's sleeping room. Time-resolved PM was also assessed using a portable direct-reading nephelometer. Dust allergen samples were collected from the child's bedroom, the family room, and the kitchen. The mean PM10 concentration, 56.5 +/- 40.7 mu g/ m(3) is 25% higher than the PM2.5 concentration (N = 90), 45.1 +/- 37.5 mu g/m(3). PM concentrations measured using a nephelometer are concentration consistent and highly correlated with gravimetric estimates. smoking households' average PM2.5 and PM10 concentrations are 33-54 mu g/m(3) reater than those of nonsmoking houses, with each cigarette smoked adding 1.0 mu m/m(3) to indoor PM2.5 and PM10 concentrations. Large percentages of NO2 and O-3 samples, 25% and 75%, respectively, were below the limit of detection. The mean NO2 indoor concentration is 31.6 +/- 40.2 ppb, while the mean indoor O-3 concentration in the ozone season was 3.3 +/- 7.7 ppb. The levels of allergens are similar to those found in other inner cities. Results presented in this paper indicate that asthmatic children in Baltimore are exposed to elevated allergens and indoor air pollutants. Understanding this combined insult may help to explain the differential asthma burden between inner-city and non-inner-city children. (c) 2004 Elsevier Inc. All rights reserved.