| 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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| 引用本文： | 王玥,张银晓,齐冰,朱艳红,袁琦,李卫军.杭州市大气细颗粒物中铁溶解度的变化特征及影响因素[J].中国环境科学,2023,43(1):115-121. |
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| 作者姓名： | 王玥 张银晓 齐冰 朱艳红 袁琦 李卫军 |
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| 作者单位： | 1. 浙江大学地球科学学院大气科学系, 浙江 杭州 310058;2. 滨州学院飞行学院, 山东 滨州 256600;3. 杭州市气象局, 浙江 杭州 310051;4. 浙江临安大气成分本底国家野外科学观测研究站, 浙江 杭州 311307;5. 中国海洋大学环境科学与工程学院环境科学系, 山东 青岛 266100 |
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| 基金项目： | 国家自然科学基金青年基金资助项目(41805099,41907186);浙江省基础公益研究计划项目(LZ19D050001);杭州市农业与社会发展科研项目(20201203B155);浙江省气象局科技计划重点项目(2021ZD13);浙江省自然科学基金资助探索项目(LY21D050002) |
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| 摘 要： | 采集了杭州市污染天和非污染天的PM2.5样品,并进一步获取了PM2.5中可溶铁(FeS)的浓度及%FeS.研究结果显示,采样期间气溶胶中总Fe(FeT)的浓度为(629±296)ng/m3(150～1167ng/m3),FeS的浓度为(51.4±30.5)ng/m3(4.2～90.5ng/m3),%FeS为(7.8%±3.5%)(1.5%～12.9%).污染天PM2.5、FeT和FeS的浓度均明显高于非污染天,且污染天%FeS为9.3%,高于非污染天的5.1%.本研究发现%FeS的差异主要与Fe的来源和大气酸化过程相关,污染天Fe受交通排放和工业排放等人为源的影响更大,且污染天大气酸化程度更强.
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| 关 键 词： | 细颗粒 可溶铁 铁的溶解度 富集因子 大气酸化 |
| 收稿时间： | 2022-05-16 |
Variation and influencing factors of iron solubility in fine particulate matter in Hangzhou |
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| WANG Yue,ZHANG Yin-xiao,QI Bing,ZHU Yan-hong,YUAN Qi,LI Wei-jun.Variation and influencing factors of iron solubility in fine particulate matter in Hangzhou[J].China Environmental Science,2023,43(1):115-121. |
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| Authors: | WANG Yue ZHANG Yin-xiao QI Bing ZHU Yan-hong YUAN Qi LI Wei-jun |
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| Affiliation: | 1. Department of Atmospheric Science, School of Earth Sciences, Zhejiang University, Hangzhou 310058, China;2. Flight College, Binzhou University, Binzhou 256600, China;3. Hangzhou Meteorological Bureau, Hangzhou 310051, China;4. Zhejiang Lin'an Atmospheric Background National Observation and Research Station, Hangzhou 311307, China;5. Department of Environmental Science, School of Environmental Science and Engineering, Ocean University of China, Qingdao 266100, China |
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| Abstract: | In this study, PM2.5 samples were collected during polluted and non-polluted days in Hangzhou.The mass concentrations of soluble iron (FeS) and the Fe solubility (Fes%) in the PM2.5were analyzed. The results show that the total Fe (FeT) 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 PM2.5, 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. |
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| Keywords: | PM2 5 soluble iron Fe solubility enrichment factor acidification process |
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