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首页> 外文期刊>Environmental Science & Technology >Indoor Particle Levels in Small- and Medium-Sized Commercial Buildings in California
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Indoor Particle Levels in Small- and Medium-Sized Commercial Buildings in California

机译：加利福尼亚中小型商业建筑中的室内颗粒水平

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摘要

This study monitored indoor and outdoor particle concentrations in 37 small and medium commercial buildings (SMCBs) in California with three buildings sampled on two occasions, resulting in 40 sampling days. Sampled buildings included offices, retail establishments, restaurants, dental offices, and hair salons, among others. Continuous measurements were made for both ultrafine and fine particulate matter as well as black carbon inside and outside of the building. Integrated PM_(2.5), PM_(2.5-10), and PM_(10) samples were also collected inside and outside the building. The majority of the buildings had indoor/outdoor (I/O) particle concentration ratios less than 1.0, indicating that contributions from indoor sources are less than removal of outdoor particles. However, some of the buildings had I/O ratios greater than 1, indicating significant indoor particle sources. This was particularly true of restaurants, hair salons, and dental offices. The infiltration factor was estimated from a regression analysis of indoor and outdoor concentrations for each particle size fraction, finding lower values for ultrafine and coarse particles than for submicrometer particles, as expected. The I/O ratio of black carbon was used as a relative measure of the infiltration factor of particles among buildings, with a geometric mean of 0.62. The contribution of indoor sources to indoor particle levels was estimated for each building.
机译：这项研究监测了加利福尼亚州37座中小型商业建筑（SMCB）的室内和室外颗粒物浓度，其中两次对三座建筑进行了采样，共采样40天。抽样建筑物包括办公室，零售店，饭店，牙科诊所和美发沙龙等。对建筑物内外的超细和细颗粒物以及黑碳进行了连续测量。还在建筑物内外收集了集成的PM_（2.5），PM_（2.5-10）和PM_（10）样本。大多数建筑物的室内/室外（I / O）颗粒浓度比小于1.0，表明室内来源的贡献小于室外颗粒的清除。但是，某些建筑物的I / O比大于1，表明存在大量的室内粒子源。餐馆，美发沙龙和牙科诊所尤其如此。根据对每个粒径级分的室内和室外浓度的回归分析估算了渗透因子，与预期的相比，发现超细和粗颗粒的值低于亚微米颗粒的值。黑碳的I / O比用作建筑物之间颗粒渗透系数的相对度量，其几何平均值为0.62。估计每栋建筑物的室内源对室内颗粒水平的贡献。

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  • 来源
    《Environmental Science & Technology》 |2012年第22期|12355-12363|共9页
  • 作者

    Xiangmei (May) Wu; Michael G. Apte; Deborah H. Bennett;

  • 作者单位

    Department of Public Health Sciences, University of California, Davis, California, United States;

    Lawrence Berkeley National Laboratory, Berkeley, California, United States;

    Department of Public Health Sciences, One Shields Avenue, University of California at Davis, CA 95616;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
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