广州市大气NO<sub>2</sub>污染对暴露人群不同疾病死亡的影响

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Abstract Atmospheric NO₂, a major gaseous pollutant, has received increasing attentions due to its high health risk, especially to human cardiopulmonary function. However, current assessments of the health effects of NO₂ mainly focused on one single disease. In this study, the generalized additive model (GAM) was used to evaluate impacts of atmospheric NO₂ pollution on cause-specific mortality (Relative risk, RR) in exposed population in Guangzhou during 2011~2015, as well as its cumulative lag effects₂. Furthermore, the stratified analysis was performed in the cold season (November through April) and the warm season (May to October). The results show that effects of NO₂ were observed to be rapid and transient, usually lasting for four days. In lag 0~4 days when the NO₂ increased by 10μg/m³, the number of non-accidental deaths increased by 2.18% (RR=1.0218; 95% CI:1.0167, 1.0270) in the full year, and 2.6% (RR=1.0260; 95% CI:1.0191, 1.0328) in the cold season and 0.57% (RR=1.0057; 95% CI:0.9952, 1.0163) in the warm season. The difference in the NO₂-induced mortality risks between cold and warm seasons was statistically significant (P=0.002). Among different diseases, NO₂ pollution showed the greatest influence on chronic obstructive pulmonary disease. Therefore, atmospheric NO₂ pollution is still an important risk to the residents in Guangzhou. And it is necessary to strengthen the control and management of NO₂ emissions and implement the early warning of NO₂ pollution to protect the public health, particularly during the cold season.

Key words： NO₂ mortality health risk GAM seasonal effect

Received: 24 January 2022

PACS:

X503.1

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	Articles by authors
	CAI Dong-jie
	YANG Jun
	HUANG Lin
	CHEN Su-juan
	ZHAO Wen-long
	DONG Hang
	LIN Guo-zhen
	WANG Bo-guang

Cite this article:

CAI Dong-jie,YANG Jun,HUANG Lin等. Impacts of atmospheric NO₂ pollution on cause-specific mortality of different diseases in exposed population in Guangzhou[J]. CHINA ENVIRONMENTAL SCIENCECE, 2022, 42(8): 3950-3956.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2022/V42/I8/3950

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