Differentiating the associations of black carbon and fine particle with daily mortality in a Chinese city
Differentiating the associations of black carbon and fine particle with daily mortality in a Chinese city
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DOI：
10.1016/j.envres.2012.08.007
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发表时间：
2013-01-01
影响因子：
8.3
通讯作者：
Kan, Haidong
中科院分区：
文献类型：
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作者：
Geng, Fuhai;Hua, Jing;Kan, Haidong
黑碳的流行病学分析监测数据有限。在目前的研究中，我们使用分布滞后模型来评估中国上海市死亡率结果（包括总死亡率和死因特异性死亡率）与黑碳和细颗粒物（PM2.5）暴露之间的关联。在我们的研究期间，黑碳和PM2.5的日均浓度分别为3.9 μ g/m3和53.9 μ g/m3。回归结果显示，黑碳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。黑碳四分位数范围增加（2.7 μ g/m3）对应于总死亡率、心血管死亡率和呼吸道死亡率分别增加2.3%（95%置信区间[CI]：0.6-4.1）、3.2%（95% CI：0.6-5.7）和0.6%（95% CI：-4.5至5.7）。当调整PM2.5时，黑碳的影响增加并保持统计学显著性;相反，PM2.5与每日死亡率的关联减少，并在调整黑碳后变得统计学不显著。据我们所知，这是中国乃至亚洲发展中国家第一项同时报告黑碳和PM2.5对每日死亡率的急性影响的研究。我们的研究结果表明，黑碳是一个有价值的额外空气质量指标，以评估环境颗粒物的健康风险。(c)2012 Elsevier Inc. All rights reserved.
There is only limited monitoring data of black carbon for epidemiologic analyses. In the current study, we used the distributed lag models to evaluate the association between mortality outcomes (both total and cause-specific) and exposure to black carbon and fine particle (PM2.5) in Shanghai, China. During our research period, the mean daily concentrations of black carbon and PM2.5 were 3.9 mu g/m(3) and 53.9 mu g/m(3), respectively. The regression results showed that black carbon was significantly associated with total and cardiovascular mortality, but not with respiratory mortality. An inter-quartile range increase (2.7 mu g/m(3)) of black carbon corresponded to a 2.3% (95% confidence interval [CI]: 0.6-4.1), 3.2% (95% CI: 0.6-5.7), and 0.6% (95% CI: -4.5 to 5.7) increase in total, cardiovascular and respiratory mortality, respectively. When adjusted for PM2.5, the effects of black carbon increased and remained statistically significant; in contrast, the associations of PM2.5 with daily mortality decreased and became statistically insignificant after adjustment for black carbon. To our knowledge, this is the first study in China, or even in Asian developing countries, to report the acute effect of black carbon and PM2.5 on daily mortality simultaneously. Our findings suggest that black carbon is a valuable additional air quality indicator to evaluate the health risks of ambient particles. (c) 2012 Elsevier Inc. All rights reserved.