首页> 外文期刊>Environmental Pollution >Indoor PM_(2.5) in an urban zone with heavy wood smoke pollution: The case of Temuco, Chile
【24h】

Indoor PM_(2.5) in an urban zone with heavy wood smoke pollution: The case of Temuco, Chile

机译:木烟污染严重的市区室内PM_(2.5):以智利特木科为例

获取原文
获取原文并翻译 | 示例
       

摘要

Temuco is a mid-size city representative of severe wood smoke pollution in southern Chile; however, little is known about the indoor air quality in this region. A field measurement campaign at 63 households in the Temuco urban area was conducted in winter 2014 and is reported here. In this study, indoor and outdoor (24-hr) PM2.5 and its elemental composition were measured and compared. Infiltration parameters and outdoor/indoor contributions to indoor PM2.5 were also determined. A statistical evaluation of how various air quality interventions and household features influence indoor PM2.5 was also performed.& para;& para;This study determined median indoor and outdoor PM2.5 concentrations of 44.4 and 41.8 mu g/m(3), respectively. An average infiltration factor (0.62 +/- 0.06) was estimated using sulfur as a tracer species. Using a simple mass balance approach, median indoor and outdoor contributions to indoor PM(2.5 )concentrations were then estimated as 12.5 and 26.514/m(3), respectively; therefore, 68% of indoor PM2.5 comes from outdoor infiltration. This high percentage is due to high outdoor pollution and relatively high household air exchange rates (median: 1.06 h (-1)).& para;& para;This study found that S, Br and Rb were dominated by outdoor contributions, while Si, Ca, Ti, Fe and As originated from indoor sources. Using continuous indoor and outdoor PM2.5 measurements, a median indoor source strength of 75 mu g PM2.5/min was estimated for the diurnal period, similar to literature results. For the evening period, the median estimate rose to 135 mu g PM2.5/min, reflecting a more intense wood burning associated to cooking and space heating at night.& para;& para;Statistical test results (at the 90% confidence level) support the ongoing woodstove replacement program (reducing emissions) and household weatherization subsidies (reducing heating demand) for improving indoor air quality in southern Chile, and suggest that a cookstove improvement program might be helpful as well. (C) 2018 Elsevier Ltd. All rights reserved.
机译:特木科(Temuco)是智利南部严重烟尘严重的中型城市。然而,对该地区的室内空气质量知之甚少。 2014年冬季,对特木科市区的63户家庭进行了实地测量,并在此报道。在这项研究中,对室内和室外(24小时)PM2.5及其元素组成进行了测量和比较。还确定了入渗参数和室外/室内对室内PM2.5的贡献。还对各种空气质量干预措施和家庭特征如何影响室内PM2.5进行了统计评估。¶¶这项研究确定了室内和室外PM2.5的中位数浓度分别为44.4和41.8μg / m(3),分别。使用硫作为示踪物估计了平均渗透因子(0.62 +/- 0.06)。使用一种简单的质量平衡方法,室内和室外对室内PM(2.5)浓度的贡献分别估计为12.5和26.514 / m(3)。因此,室内PM2.5的68%来自室外渗透。较高的百分比归因于较高的室外污染和相对较高的家庭空气交换率(中位数:1.06 h(-1))。¶¶此研究发现,S,Br和Rb由室外贡献占主导地位,而Si ,Ca,Ti,Fe和As源自室内。使用连续的室内和室外PM2.5测量,在白天,估计室内平均室内源强度为75μg PM2.5 / min,与文献结果相似。在傍晚期间,中位数估计值上升至135μg PM2.5 /分钟,反映出与夜间烹饪和空间加热相关的更强烈的木材燃烧。¶¶统计测试结果(置信水平为90%) )支持正在进行的木炉灶替换计划(减少排放)和家庭风化补贴(减少供暖需求),以改善智利南部的室内空气质量,并建议炊具改进计划也可能会有所帮助。 (C)2018 Elsevier Ltd.保留所有权利。

著录项

  • 来源
    《Environmental Pollution》 |2018年第5期|477-487|共11页
  • 作者单位

    Pontificia Univ Catolica Chile, Dept Ingn Quim & Bioproc, Avda Vicuna Mackenna 4860, Santiago 7820436, Chile;

    Pontificia Univ Catolica Chile, Inst Geog, Avda Vicuna Mackenna 4860, Santiago 7820436, Chile;

    Pontificia Univ Catolica Chile, Dept Ingn Quim & Bioproc, Avda Vicuna Mackenna 4860, Santiago 7820436, Chile;

    Pontificia Univ Catolica Chile, Dept Salud Publ, Marcoleta 340, Santiago 8330033, Chile;

    Univ Catolica Temuco, Nucleo Energias Renovables, Temuco, Chile;

    Univ Colorado, Civil Architectural & Environm Engn Dept, UCB 428, Boulder, CO 80309 USA;

  • 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
  • 中图分类
  • 关键词

    Indoor air quality; Sustainable urban development; Household infiltration; Woodstove replacement program;

    机译:室内空气质量;可持续城市发展;家庭渗透;木炉更换计划;
  • 入库时间 2022-08-17 13:25:49

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号