Ambient air pollution of particles and gas pollutants, and the predicted health risks from long-term exposure to PM2.5 in Zhejiang province, China
Ambient air pollution of particles and gas pollutants, and the predicted health risks from long-term exposure to PM2.5 in Zhejiang province, China
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中国浙江省环境空气颗粒物和气体污染物污染状况及长期暴露于PM2.5的健康风险预测
DOI：
10.1007/s11356-018-2420-5
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发表时间：
2018-08-01
影响因子：
5.8
通讯作者：
Yao, Defei
中科院分区：
文献类型：
--
作者：
Chen, Yuanchen;Zang, Lu;Yao, Defei
近年来，我国大气颗粒物（PMs）和部分气体污染物（NO2和SO2）污染严重，大量研究表明，这些污染物对人体健康有很大的危害。污染物浓度冬季明显高于夏季，平均浓度低于北方。高分辨率排放清单与PM2. 5的空间分布存在显著的线性正相关关系，虽然污染物的变化趋势相似，但NO2和SO2比PM2. 5滞后1 h。PM2.5对温度和相对湿度的滞后时间为1 h。污染物与气象条件之间存在显著的线性相关关系，说明气象条件对大气污染的影响不限于排放。对于24小时趋势，PM2.5，NO2和SO2的最低浓度在15：00-18：00左右。2015年，浙江省PM2.5暴露导致缺血性心脏病（IHD）、脑血管病（卒中）、慢性阻塞性肺疾病（COPD）、肺癌（LC）和急性下呼吸道感染（ALRI）的人群归因分数（PAF）分别为25.82%、38.94%、17.73%、22.32%和31.14%。浙江省PM2.5暴露人群加权死亡率低于全国平均水平。
In recent years, ambient air has been severely contaminated by particulate matters (PMs) and some gas pollutants (nitrogen dioxide (NO2) and sulfur dioxide (SO2)) in China, and many studies have demonstrated that exposure to these pollutants can induce great adverse impacts on human health. The concentrations of the pollutants were much higher in winter than those in summer, and the average concentrations in this studied area were lower than those in northern China. In the comparison between high-resolution emission inventory and spatial distribution of PM2.5, significant positive linear correlation was found. Though the pollutants had similar trends, NO2and SO2delayed with 1 h to PM2.5. Besides, PM2.5had a lag time of 1 h to temperature and relative humidity. Significant linear correlation was found among pollutants and meteorological conditions, suggesting the impact of meteorological conditions on ambient air pollution other than emission. For the 24-h trend, lowest concentrations of PM2.5, NO2, and SO2were found around 15:00-18:00. In 2015, the population attributable fractions (PAFs) for ischemic heart disease (IHD), cerebrovascular disease (stroke), chronic obstructive pulmonary disease (COPD), lung cancer (LC), and acute lower respiratory infection (ALRI) due to the exposure to PM2.5in Zhejiang province were 25.82, 38.94, 17.73, 22.32, and 31.14%, respectively. The population-weighted mortality due to PM2.5exposure in Zhejiang province was lower than the average level of the whole country-China.