大气气溶胶中的铁及其溶解度研究综述

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...

A review of the iron and its solubility in atmospheric aerosols

Bioavailableiron (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.