Wildfire smoke impacts respiratory health more than fine particles from other sources: observational evidence from Southern California.
Wildfire smoke impacts respiratory health more than fine particles from other sources: observational evidence from Southern California.
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野火烟雾对呼吸系统健康的影响大于其他来源的细颗粒物：来自南加州的观察证据。
DOI：
10.1038/s41467-021-21708-0
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发表时间：
2021-03-05
影响因子：
16.6
通讯作者：
Benmarhnia T
中科院分区：
文献类型：
--
作者：
Aguilera R;Corringham T;Gershunov A;Benmarhnia T
在气候变化的情况下，野火变得越来越频繁和具有破坏性。野火烟雾中的细颗粒物PM2.5对人类健康产生不利影响。最近的毒理学研究表明，野火颗粒物可能比同等剂量的环境PM2.5更具毒性。然而，空气质量法规假设PM2.5的毒性在不同排放源之间没有变化。评估野火产生的PM2.5是否比其他来源的PM2.5危害更大或更小是一个紧迫的公共卫生问题。在这里，我们使用一系列统计方法和暴露定义来隔离野火特有的PM2.5。我们发现，在野火特定的PM2.5增加10 μg m−3的情况下，呼吸系统住院率增加1.3%至10%，而非野火PM2.5增加0.67%至1.3%。我们的结论指出，空气质量政策需要根据排放源考虑PM2.5对人类健康影响的变化。最近的毒理学研究表明，野火颗粒物可能比同等剂量的环境PM2.5更具毒性。在这里，作者表明，即使在类似的暴露水平下，野火产生的PM2.5对人群呼吸系统健康的危害也要大得多。
Wildfires are becoming more frequent and destructive in a changing climate. Fine particulate matter, PM2.5, in wildfire smoke adversely impacts human health. Recent toxicological studies suggest that wildfire particulate matter may be more toxic than equal doses of ambient PM2.5. Air quality regulations however assume that the toxicity of PM2.5 does not vary across different sources of emission. Assessing whether PM2.5 from wildfires is more or less harmful than PM2.5 from other sources is a pressing public health concern. Here, we isolate the wildfire-specific PM2.5 using a series of statistical approaches and exposure definitions. We found increases in respiratory hospitalizations ranging from 1.3 to up to 10% with a 10 μg m−3 increase in wildfire-specific PM2.5, compared to 0.67 to 1.3% associated with non-wildfire PM2.5. Our conclusions point to the need for air quality policies to consider the variability in PM2.5 impacts on human health according to the sources of emission. Recent toxicological studies suggest that wildfire particulate matter may be more toxic than equal doses of ambient PM2.5. Here, the authors show that even for similar exposure levels, PM2.5 from wildfires is considerably more dangerous for respiratory health at the population level.
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影响因子：
4.9
作者：
Delfino RJ;Brummel S;Wu J;Stern H;Ostro B;Lipsett M;Winer A;Street DH;Zhang L;Tjoa T;Gillen DL
通讯作者：
Gillen DL
影响因子：
6.7
作者：
Goss, Michael;Swain, Daniel L.;Diffenbaugh, Noah S.
通讯作者：
Diffenbaugh, Noah S.
影响因子：
4.8
作者：
Gupta, P.;Doraiswamy, P.;Mills, K. C.
通讯作者：
Mills, K. C.
影响因子：
4.8
作者：
Gan, Ryan W.;Ford, Bonne;Magzamen, Sheryl
通讯作者：
Magzamen, Sheryl
影响因子：
11.4
作者：
Jaffe, Daniel A.;Wigder, Nicole;Reid, Stephen B.
通讯作者：
Reid, Stephen B.