摘要
目的评价西安市大气污染对城市居民的健康影响。方法采用时间序列方法对2004—2008年西安主要大气污染物(PM10、NO2和SO2)与每日死亡率相关性进行泊松回归分析,并控制年龄、性别、时间、"星期几效应"和气象因素的影响。结果研究地区大气PM10、NO2和SO2暴露与超额死亡风险存在显著正相关关系。PM10、NO2和SO2在过去48 h的暴露浓度每上升10μg/m3所对应的总死亡超额风险分别为0.35%(95%CI:0.11%～0.58%),2.42%(1.57%～3.27%)和0.60%(0.16%～1.05%)。PM10、NO2和SO2暴露与心脑血管和呼吸系统疾病死亡的影响较显著,中老年人和男性更为易感。在采暖期和非采暖期,污染物浓度及效应有明显的季节性差异。结论西安市主要大气污染物短期暴露与居民的超额死亡风险显著相关。
Objective To study associations between daily mortality and exposure to air pollution. Methods A timeseries analysis was conducted to assess the acute mortality effects of respirable particulate matter （PM10）, nitrogen dioxide （NO2） and sulfur dioxide （SO2） in urban Xi＇an residents, using Poisson regression. Temperature, relative humidity, age, gender and day of week were controlled in the models. Results Per 10 μg/m^3 increases in 2-day average concentrations of air pollution, significant increases were observed in all-cause mortality of 0.35% （95%CI： 0.11%-0.58%） for PM10, 2.42% （95%C1： 1.57%- 3.27%） for NO2, and 0.60% （95%CI： 0.16%-1.05%） for SO2. Stronger effects of air pollution were observed on cardiorespiratory mortality. Seasonal variations in pollution associated mortality effects were found between centralized heating （November 15 to March 15） and non-heating （March 16 to November 14） periods. Conclusion Exposure to ambient pollution was significantly associated with the increases in excess risk of total and cardio-respiratory mortality in Xi＇an residents.
出处
《环境与健康杂志》
CAS
CSCD
北大核心
2011年第12期1039-1043,共5页
Journal of Environment and Health
基金
国家环境保护部公益项目(201009032
200809109)
