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首页> 外文期刊>Environmental Science & Technology >Reducing Indoor Levels of 'Outdoor PM_(2.5)' in Urban China: Impact on Mortalities
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Reducing Indoor Levels of 'Outdoor PM_(2.5)' in Urban China: Impact on Mortalities

机译:降低中国城市的室内“室外PM_(2.5)”水平:对死亡率的影响

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摘要

This study estimates adult mortalities attributed to PM2.5 across urban China in 2015 and the corresponding mortalities that might be avoided by meeting the yearly averaged indoor PM2.5 threshold in the newly established Assessment Standard for Healthy Building (ASHB) and seven other potential thresholds. We use outdoor PM2.5 concentrations from, similar to 1500 monitoring sites in 339 Chinese cities, coupled with a detailed exposure model, to estimate outdoor and indoor exposures to PM2.5 originating outdoors. We proceed to calculate premature mortality attributable to PM2.5 exposure using an integrated exposure-response model. Results indicate that indoor exposures accounted for 66%-87% of total exposure to PM2.5 of outdoor origin and 81% (95% confidence interval (CI), 71%-87%), i.e., 316 000 (95% CI, 176 000-435 000), of the 389 000 (95% CI, 245 000-501 000) mortalities attributable to "outdoor PM2.5" for the urban population = 25 years of age in China in 2015. Potentially 14 000 (95% CI, 8000-20 000) deaths might be avoided if indoor PM2.5 of outdoor origin met the ASHB guideline of 35 mu g/m(3) for annual mean indoor PM2.5, and 162 000 (95% CI, 79 000-237 000) deaths might be avoided by meeting a 10 mu g/m(3) threshold. The analysis in this work should be helpful in formulating indoor air quality policies.
机译:这项研究估算了2015年中国城市地区PM2.5的成人死亡率,以及通过达到新制定的《健康建筑评估标准》(ASHB)中的年平均室内PM2.5阈值和其他七个潜在阈值可以避免的相应死亡率。我们使用来自中国339个城市的1500个监测点的室外PM2.5浓度,再结合详细的暴露模型,来估算室外和室内暴露于室外的PM2.5。我们继续使用整合的暴露-响应模型来计算可归因于PM2.5暴露的过早死亡。结果表明,室内暴露占室外PM2.5暴露总量的66%-87%,占81%(95%置信区间(CI),71%-87%),即31.6万(95%CI, 2015年中国25岁以上城市人口的“室外PM2.5”死亡率为389 000(95%CI,245 000-501 000)死亡率中的176 000-435 000)。潜在的14如果室外来源的室内PM2.5符合ASHB的年平均室内PM2.5年平均浓度为35μg / m(3)和162 000(95%CI,95%CI,8000-20 000),则可以避免死亡通过达到10μg / m(3)的阈值可以避免CI(79 000-237 000)死亡。这项工作中的分析应有助于制定室内空气质量政策。

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  • 来源
    《Environmental Science & Technology》 |2019年第6期|3119-3127|共9页
  • 作者单位

    Tsinghua Univ, Dept Bldg Sci, Beijing 100084, Peoples R China|Beijing Key Lab Indoor Air Qual Evaluat & Control, Beijing 100084, Peoples R China;

    Tsinghua Univ, Dept Bldg Sci, Beijing 100084, Peoples R China|Beijing Key Lab Indoor Air Qual Evaluat & Control, Beijing 100084, Peoples R China|Rutgers State Univ, Environm & Occupat Hlth Sci Inst, Piscataway, NJ 08854 USA;

    China Acad Bldg Res, Beijing 100013, Peoples R China;

    Tsinghua Univ, Dept Elect Engn, Beijing 100084, Peoples R China|Tsinghua Univ, Tsinghua Berkeley Shenzhen Inst, Shenzhen 518071, Guangdong, Peoples R China;

    Tsinghua Univ, Dept Bldg Sci, Beijing 100084, Peoples R China|Beijing Key Lab Indoor Air Qual Evaluat & Control, Beijing 100084, Peoples R China;

    Tsinghua Univ, Dept Elect Engn, Beijing 100084, Peoples R China;

    Duke Univ, Global Hlth Inst, Durham, NC 27708 USA|Duke Univ, Nicholas Sch Environm, Durham, NC 27708 USA|Duke Kunshan Univ, Global & Environm Hlth, Kunshan 215316, Jiangsu, Peoples R China;

    Tsinghua Univ, Dept Bldg Sci, Beijing 100084, Peoples R China|Beijing Key Lab Indoor Air Qual Evaluat & Control, Beijing 100084, Peoples R China;

  • 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);
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  • 正文语种 eng
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