污染物
空气质量指数
健康风险
索引(排版)
主成分分析
空气污染物
空气污染
统计
环境科学
公共卫生
污染
环境卫生
医学
质量(理念)
风险分析(工程)
计算机科学
数学
地理
气象学
生物
生态学
哲学
护理部
认识论
万维网
作者
Ru Cao,Yuxin Wang,Jing Huang,Qiang Zeng,Xiaochuan Pan,Guoxing Li,Tianfeng He
标识
DOI:10.1016/j.envres.2021.110987
摘要
The most common currently used air quality risk communication tool, the Air Quality Index (AQI), has been criticized. As a result, Canada proposed the Air Quality Health Index (AQHI) to communicate the health risks of multiple pollutants. However, the AQHI is calculated by directly summing the excess risks from single-pollutant models, which may overestimate the effects of the pollutants. To solve this problem, we introduced two methods for estimating the joint effects of multiple pollutants: the cumulative risk index (CRI) and supervised principal component analysis (SPCA). Based on three methods, i.e., the standard, CRI and SPCA methods, we constructed three types of AQHIs and compared their validity to select the best communication tool. Our results showed that compared with the AQI, all three AQHIs had a linear relationship with mortality. In addition, the CRI-AQHI had the best goodness of fit and captured the overall health risk of pollution mixtures most robustly among various cause-specific mortalities when identifying health risks. Our study indicated that the CRI-AQHI may have the potential to be a better alternative to the standard AQHI in communicating air pollution-related health risks to the public.
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