沈阳市PM<sub>2.5</sub>离子成分对呼吸疾病门诊数影响研究

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Abstract

A semi-parametric generalized additive model (GAM) was used to analyze the exposure-effect relationship between PM_2.5 and its water-soluble (WS) ions and daily respiratory hospital outpatient visits from 2015 to 2016 in Shenyang after a complex control of the long-term trend, the "day of the week" effect, and the meteorological parameter. The layering model was established for people with different sexes and ages. The results showed that PM_2.5 and its WS ions had a lag correlation with daily outpatient visits. Due to the coal burning emissions in winter, PM_2.5, NO₃^-and NH₄⁺ had a significantly positively correlative with outpatient visits. With the largest correlation coefficient of 2-days lags (avg01). Under the optimal lagging time, the excess risk (ER%) of daily outpatients was increased by 1.31% with a 95% confidence interval (CI) of 1.2%~1.43% when PM_2.5 concentration increased 10µg/m³. As ionic concentrations of SO₄^2-, NO₃^-, NH₄⁺, Cl^-, K⁺, Mg²⁺, Ca²⁺ and Na⁺ increased by 1interquartile range (IQR), the ER% of daily outpatients increased by 3.22% (with 95%CI:2.81%~3.62%), 4.67%(4.13%~5.22%), 5.41%(4.49%~6.33%), 7.38%(3.91%~10.96%), 0.14% (-6.34%-7.07%), 7.64% (-11.87%-31.47%), 3.57%(-2.83%-10.39%) and 0.46%(-16.64%-21.06%), respectively. PM_2.5, Cl^-, Mg²⁺, Ca²⁺, and Na⁺ had a greater effect on the number of respiratory disease female outpatients than on male ones. Compared with the population aged between 15 and 65, PM_2.5, SO₄^2-, Cl^-, Ca²⁺ and Na⁺ exerted a greater effect on the elderly population aged 65 and above. This indicated that there was difference among population of different sexes and ages due to the divergence in physiological structure and environmental factors.

Key words： time-series water-soluble ions respiratory diseases hospital outpatient visits PM_2.5

Received: 08 May 2018

PACS:

X513

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	Articles by authors
	HONG Ye
	ZHANG Ying
	MA Yan-jun
	ZHANG Jun
	HOU Shuai
	WANG Shi-gong
	CHEN Kai-Qi
	LI Hui
	ZHANG Yun-hai
	ZHOU De-ping
	WANG Yang-feng

Cite this article:

HONG Ye,ZHANG Ying,MA Yan-jun等. Effect of the association between PM_2.5 and its water-soluble ions and hospital outpatient visits for respiratory diseases in Shenyang City[J]. CHINA ENVIRONMENTAL SCIENCECE, 2018, 38(12): 4697-4705.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2018/V38/I12/4697

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