大气气溶胶中的铁及其溶解度研究综述  

A review of the iron and its solubility in atmospheric aerosols

作　　者：齐宇轩 周杨 QI Yuxuan;ZHOU Yang(College of Oceanic and Atmospheric Science,Ocean University of China,Qingdao 266100,China)

机构地区：[1]中国海洋大学海洋与大气学院,山东青岛266100

出　　处：《海洋气象学报》2021年第2期1-13,共13页Journal of Marine Meteorology

基　　金：国家自然科学基金青年科学基金项目(41605114)。

摘　　要：生物活性铁(Fe)进入生物地球化学循环中能够调节碳循环,影响海洋初级生产力,间接影响全球气候变化。决定Fe生物可利用度的关键因子是可溶Fe含量,其中大气气溶胶的长距离传输是上层海洋获取生物可利用Fe的重要来源。近年来,对气溶胶中的Fe及溶解度的研究取得了重要进展,包括对不同区域Fe质量浓度和溶解度的观测以及对Fe溶解度影响因素的讨论。基于以上研究成果,汇总了近二十年全球部分陆地和海洋站点观测所得的不同粒径气溶胶颗粒物中的Fe质量浓度及其溶解度数据;重点介绍了气溶胶沉降入海洋前影响Fe溶解度的主要因素,包括Fe的来源、大气物理过程以及大气化学和传输混合过程等,并就各影响因素间的关联及相对重要性展开讨论;对未来气溶胶Fe的研究方向和方法提出建议。Bioavailable iron(Fe)can regulate the carbon cycle and affect the marine primary productivity once participates in the biogeochemical cycles,and indirectly influence global climate change.The key factor determining the bioavailability of Fe is the soluble Fe content,and the long-range transport of atmospheric aerosols is an important source of bioavailable Fe.Significant progress has been made to characterize the Fe and its solubility in different sources aerosols recently,including the observations of total and soluble Fe in distinct regions and the discussion on main factors controlling Fe solubility.Based on the above research results,we summarize the Fe mass concentrations and solubility data in different size-dependent particles at typical land and ocean sites around the world,and emphatically describe the main factors controlling Fe solubility in aerosols before depositing into the ocean,including the sources of Fe,atmospheric physical process,and atmospheric chemical and transport mixing process.The relationship and relative importance of various factors are further discussed.Finally we come up with some recommendations for future work of Fe in aerosols.

关 键 词：可溶性Fe Fe溶解度 气溶胶 大气过程 海洋初级生产力 碳循环 

分 类 号：X513[环境科学与工程—环境工程]