Children's Particulate Matter Exposure Characterization as Part of the New Hampshire Birth Cohort Study.
Children's Particulate Matter Exposure Characterization as Part of the New Hampshire Birth Cohort Study.
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DOI：
10.3390/ijerph182212109
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发表时间：
2021-11-18
影响因子：
--
通讯作者：
Karagas MR
中科院分区：
文献类型：
--
作者：
Thornburg J;Halchenko Y;McCombs M;Siripanichgon N;Dowell E;Cho SH;Egner J;Sayarath V;Karagas MR
作为新罕布什尔州出生队列研究的一部分，3至5岁的儿童参加了一项个人PM2.5暴露研究。本文描述了使用可穿戴传感器测量的个人PM2.5暴露和协议遵守情况。MicroPEM™收集了272名儿童的个人连续和综合PM2.5暴露测量和依从性数据。从过滤器中测量PM2.5、黑碳（BC）和棕色碳烟草烟雾（BrC-ETS）暴露。我们对柴炉的存在以及影响PM2.5、BC和BrC暴露的其他因素进行了多变量分析。我们收集了272名参与者中258名（95%）的有效暴露数据。在72小时期间，儿童佩戴MicroPEM的平均比例为46%，在2天1夜期间，佩戴MicroPEM的儿童比例超过80%（在本研究中，睡眠时间被视为不合规）。PM2.5浓度升高发生在早上、晚上和夜间。PM2.5、BC和BrC-ETS浓度中位数分别为8.1 μg/m3、3.6 μg/m3和2.4 μg/m3。BC和BrC-ETS的总质量占PM2.5的72%。柴炉的存在、每天使用的时间和主要热源与儿童的PM2.5暴露有关，空气过滤器与PM2.5浓度降低有关。我们的研究结果表明，柴炉烟雾对该队列的PM2.5暴露有显著影响。高样本效度和依从率表明，MicroPEM可用于幼儿在流行病学研究中测量他们的PM2.5暴露，告知干预措施以减少暴露，改善儿童健康。
As part of the New Hampshire Birth Cohort Study, children 3 to 5 years of age participated in a personal PM2.5 exposure study. This paper characterizes the personal PM2.5 exposure and protocol compliance measured with a wearable sensor. The MicroPEM™ collected personal continuous and integrated measures of PM2.5 exposure and compliance data on 272 children. PM2.5, black carbon (BC), and brown carbon tobacco smoke (BrC-ETS) exposure was measured from the filters. We performed a multivariate analysis of woodstove presence and other factors that influenced PM2.5, BC, and BrC exposures. We collected valid exposure data from 258 of the 272 participants (95%). Children wore the MicroPEM for an average of 46% of the 72-h period, and over 80% for a 2-day, 1-night period (with sleep hours counted as non-compliance for this study). Elevated PM2.5 exposures occurred in the morning, evening, and overnight. Median PM2.5, BC, and BrC-ETS concentrations were 8.1 μg/m3, 3.6 μg/m3, and 2.4 μg/m3. The combined BC and BrC-ETS mass comprised 72% of the PM2.5. Woodstove presence, hours used per day, and the primary heating source were associated with the children’s PM2.5 exposure and air filters were associated with reduced PM2.5 concentrations. Our findings suggest that woodstove smoke contributed significantly to this cohort’s PM2.5 exposure. The high sample validity and compliance rate demonstrated that the MicroPEM can be worn by young children in epidemiologic studies to measure their PM2.5 exposure, inform interventions to reduce the exposures, and improve children’s health.
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DOI：
10.1016/j.scitotenv.2017.03.111
发表时间：
2017-08-15
期刊：
The Science of the total environment
影响因子：
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作者：
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发表时间：
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影响因子：
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通讯作者：
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