South-hemispheric marine aerosol Hg and S isotope compositions reveal different oxidation pathways

查看全文 作　　者：David [1]AuYang;Jiubin [2,1]Chen;Wang [2]Zheng;Yanxu [3]Zhang;Guitao [4,5]Shi;Jeroen [6]ESonke;Pierre [7]Cartigny;Hongming [2]Cai;Wei [2]Yuan;Liangzhi [8]Liu;Pengxue [1]Gai;Congqiang [2]Liu

机构地区：[1]State Key Laboratory of Environmental Geochemistry,Institute of Geochemistry,Chinese Academy of Sciences,Guiyang 550081,China;[2]School of Earth System Science,Institute of Surface-Earth System Science,Tianjin University,Tianjin 300072,China;[3]Joint International Research Laboratory of Atmospheric and Earth System Sciences,School of Atmospheric Sciences,Nanjing University,Nanjing 210023,China;[4]Key Laboratory of Geographic Information Science(Ministry of Education),School of Geographic Sciences and State Key Lab of Estuarine and Coastal Research,East China Normal University,Shanghai 200241,China;[5]Polar Research Institute of China,Shanghai 200062,China;[6]Géosciences Environnement Toulouse,CNRS/IRD/UniversitéPaul Sabatier Toulouse 3,Toulouse 31400,France;[7]Laboratoire de Géochimie des Isotopes Stables,Institut de Physique du Globe de Paris,UniversitéParis Diderot,CNRS UMR 7154,Sorbonne Paris-Cité,1 rue de Jussieu,Paris 75005,France;[8]School of Civil Engineering,Tianjin University,Tianjin 300072,China

出　　处：《National Science Open》索引2022年第1卷第2期,共18页

基　　金：supported by the National Natural Science Foundation of China(41830647,41625012,41961144028,U1612442);JB.C and the Chinese Academy of Sciences President’s International Fellowship Initiative PIFI-C(2018PC0034)to D.AY. 摘　　要：Particle-bound mercury(PBM)records the oxidation of elemental mercury,of which the main oxidation pathways(Br∙/Cl∙/OH∙/O3)remain unclear,especially in the Southern Hemisphere.Here,we present latitudinal covariations of Hg and Sisotopic anomalies in cross-hemispheric marine aerosols that evidence an equator-to-poleward transition of Hg oxidants from OH∙/O3 in tropics to Br∙/Cl∙in polar regions highlighting thus the presence of distinct oxidation processes producing PBM.The correlations between Hg,S and O-isotopic compositions measured in PBM,sulfates and nitrates respectively within the aerosols highlight the implication of common oxidants in their formations at different latitudes.Our results open a new window to better quantify the present-day atmospheric Hg,S and N budgets and to evaluate the influences of aerosols on climate and ecosystems once the isotopic fractionations associated with each process have been determined. 关键词：mercury sulfur AEROSOLS OXIDATION mass independent fractionation marine

相关文献

参考文献（90）
引证文献（2）
耦合文献（7）

参考文献(90)

引证文献(2)

耦合文献(7)

互联网出版许可证新出网证(渝)字10号全国400电话 - 免长途话费

South-hemispheric marine aerosol Hg and S isotope compositions reveal different oxidation pathways

参考文献(90)

引证文献(2)

耦合文献(7)

用户提示