Insights into the source-specific health risk of ambient particle-bound metals in the Pearl River Delta region, China

被引:18
|
作者
Fu, Shaojie [1 ]
Yue, Dingli [2 ]
Lin, Weiwei [1 ]
Hu, Qiansheng [1 ]
Yuan, Luan
Zhao, Yan
Zhai, Yuhong [2 ]
Mai, Dejian [1 ,2 ]
Zhang, Hedi [1 ,2 ]
Wei, Qing [3 ]
He, Lingyan [4 ]
机构
[1] Sun Yat Sen Univ, Sch Publ Hlth, Dept Occupat & Environm Hlth, Guangzhou 510080, Peoples R China
[2] Guangdong Ecol & Environm Monitoring Ctr, State Environm Protect Key Lab Reg Air Qual Monit, Guangzhou 510308, Peoples R China
[3] Sun Yat Sen Univ, Sch Publ Hlth, Expt Teaching Ctr, Guangzhou 510080, Peoples R China
[4] Peking Univ, Shenzhen Grad Sch, Key Lab Urban Habitat Environm Sci & Technol, Shenzhen 518055, Peoples R China
基金
中国国家自然科学基金;
关键词
PM2.5; Risk assessment; Carcinogenic risk; Non-carcinogenic risk; Source apportionment; ATMOSPHERIC HEAVY-METALS; SOURCE APPORTIONMENT; TRACE-ELEMENTS; PARTICULATE MATTER; PM2.5; FINE; DEPOSITION; INVENTORY; EMISSIONS; EXPOSURE;
D O I
10.1016/j.ecoenv.2021.112642
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Quantification of source-specific health risks of PM2.5 plays an essential role in health-oriented air pollution control. However, there is limited evidence supporting the source-based risk apportionment of particle-bound metals. In this study, source-specific cancer and non-cancer risk characterization of 12 particle-bound metals was performed in the Pearl River Delta (PRD) region, China. A combination of health risk assessment model and receptor-based source apportionment modeling with positive matrix factorization (PMF) was applied for characterizing the spatial-temporal patterns for inhalation health risks of particle-bound metals in three main city clusters, inland area and coastal area in the region from December 2014 through July 2016. Results showed that the carcinogenic risk of particle-bound metals for adults (4.13 x 10(-5)) was higher than that for children (9.53 x 10(-6)) in the PRD region. The highest and significant non-carcinogenic risk was found in the northwest city cluster. Industrial emission (63.3%) were the dominant contributors to the cancer risk, while the main contributors to the non-cancer risk were the vehicle emission source (33.2%) in the dry season and industrial emission (30.8%) in the wet season. Our results provide important evidence for spatial source-specific health risks with temporal characteristics of particle-bound metals in most densely populated areas in the southern China, and suggest that reduction of industrial and vehicle emissions could facilitate more cost-effective PM2.5 control measures to improve human health.
引用
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页数:9
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