杭州市大气细颗粒物中铁溶解度的变化特征及影响因素

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Abstract In this study, PM_2.5 samples were collected during polluted and non-polluted days in Hangzhou.The mass concentrations of soluble iron (Fe_S) and the Fe solubility (Fes%) in the PM_2.5were analyzed. The results show that the total Fe (Fe_T) concentration was 629±296ng m^-3 with the range of 150~1167ng m^-3, soluble iron concentration was 51.4±30.5ng m^-3 with the range of 4.2~90.5ng m^-3, and the Fe solubilityis 7.8±3.5% with the range of 1.5~12.9%. The concentrations of PM_2.5, total Fe and soluble iron in polluted days were significantly higher than those in non-polluted days. Fe solubility was 9.3% in polluted days, much higher than 5.1% in non-polluted days. This study found that the difference of Fe solubility is mainly related to the source of Fe and the process of atmospheric acidification. Fe in polluted days is mainly affected by anthropogenic sources such as traffic and industrial emissions, and the atmospheric acidification in polluted days is stronger.

Key words： PM_2.5 soluble iron Fe solubility enrichment factor acidification process

Received: 16 May 2022

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X513

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	Articles by authors
	WANG Yue
	ZHANG Yin-xiao
	QI Bing
	ZHU Yan-hong
	YUAN Qi
	LI Wei-jun

Cite this article:

WANG Yue,ZHANG Yin-xiao,QI Bing等. Variation and influencing factors of iron solubility in fine particulate matter in Hangzhou[J]. CHINA ENVIRONMENTAL SCIENCECE, 2023, 43(1): 115-121.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2023/V43/I1/115

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