Size-fractionated particle number concentrations and daily mortality in a Chinese city.
Size-fractionated particle number concentrations and daily mortality in a Chinese city.
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DOI：
10.1289/ehp.1206398
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发表时间：
2013-10
影响因子：
10.4
通讯作者：
Kan H
中科院分区：
文献类型：
--
作者：
Meng X;Ma Y;Chen R;Zhou Z;Chen B;Kan H
背景：空气中颗粒与健康结果之间的关联已在世界范围内得到记录；然而，关于不同颗粒大小对健康的影响的信息有限。目的：探讨中国沈阳市粒径分馏颗粒数浓度（pnc）与日死亡率之间的关系。方法：我们收集了2006年12月1日至2008年11月30日期间0.25-10 μm直径颗粒的每日死因特异性死亡率和pnc数据。我们使用准泊松回归广义加性模型来估计pnc与死亡率之间的关联，并使用自然样条平滑函数来调整时变协变量以及长期和季节性趋势。结果：所有自然原因、心血管疾病和呼吸系统疾病的平均每日死亡人数分别为67人、32人和7人。0.25 ~ 0.50 μm颗粒pnc的四分位间距（IQR）增加与总死亡率和心血管死亡率显著相关，但与呼吸死亡率无关。暖季对pnc的影响大于冷季，且随粒径的减小而增大。0.25-0.28 μm、0.35-0.40 μm和0.45-0.50 μm颗粒的pnc的IQR增加分别与2.41% （95% CI: 1.23, 3.58%）、1.31% （95% CI: 0.52, 2.09%）和0.45% （95% CI: 0.04, 0.87%）的总死亡率升高相关。在调整了环境颗粒和气体污染物的质量浓度后，这种关联通常是稳定的。结论：粒径< 0.5 μm的颗粒可能是造成空气污染的主要原因，且颗粒粒径越小，对健康的不良影响越大。引用本文：王晓霞，马勇，陈锐，周忠，陈斌，阚华。2013。中国某城市粒径分馏颗粒数浓度与日死亡率。环境健康展望121:1174-1178；http://dx.doi.org/10.1289/ehp.1206398
Background: Associations between airborne particles and health outcomes have been documented worldwide; however, there is limited information regarding health effects associated with different particle sizes. Objectives: We explored the association between size-fractionated particle number concentrations (PNCs) and daily mortality in Shenyang, China. Methods: We collected daily data on cause-specific mortality and PNCs for particles measuring 0.25–10 μm in diameter between 1 December 2006 and 30 November 2008. We used quasi-Poisson regression generalized additive models to estimate associations between PNCs and mortality, and we used natural spline smoothing functions to adjust for time-varying covariates and long-term and seasonal trends. Results: Mean numbers of daily deaths were 67, 32, and 7 for all natural causes, cardiovascular diseases, and respiratory diseases, respectively. Interquartile range (IQR) increases in PNCs for particles measuring 0.25–0.50 μm were significantly associated with total and cardiovascular mortality, but not respiratory mortality. Effect estimates were larger for PNCs during the warm season than the cool season, and increased with decreasing particle size. IQR increases in PNCs of 0.25–0.28 μm, 0.35–0.40 μm, and 0.45–0.50 μm particles were associated with 2.41% (95% CI: 1.23, 3.58%), 1.31% (95% CI: 0.52, 2.09%), and 0.45% (95% CI: 0.04, 0.87%) higher total mortality, respectively. Associations were generally stable after adjustment for mass concentrations of ambient particles and gaseous pollutants. Conclusions: Our findings suggest that particles < 0.5 μm in diameter may be most responsible for adverse health effects of particulate air pollution and that adverse health effects may increase with decreasing particle size. Citation: Meng X, Ma Y, Chen R, Zhou Z, Chen B, Kan H. 2013. Size-fractionated particle number concentrations and daily mortality in a Chinese city. Environ Health Perspect 121:1174–1178; http://dx.doi.org/10.1289/ehp.1206398
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影响因子：
10.4
作者：
Dockery, DW
通讯作者：
Dockery, DW
超铁颗粒在空气颗粒质量与心血管健康之间关联中的潜在作用。
影响因子：
10.4
作者：
Delfino RJ;Sioutas C;Malik S
通讯作者：
Malik S
DOI：
10.1038/sj.jes.7500538
发表时间：
2007-08-01
影响因子：
4.5
作者：
Stoelzel, Matthias;Breitner, Susanne;Peters, Annette
通讯作者：
Peters, Annette
中国三个城市的粗颗粒物和死亡率：中国空气污染与健康影响研究 (CAPES)
影响因子：
9.8
作者：
Chen, Renjie;Li, Yi;Kan, Haidong
通讯作者：
Kan, Haidong
影响因子：
10.4
作者：
Wong CM;Vichit-Vadakan N;Kan H;Qian Z
通讯作者：
Qian Z