【摘 要】
：
The ionic compositions of aerosol samples collected during the 26th Chinese National Antarctic Research Expedition were analyzed and the sources of ions were di
【机 构】
：
Key Laboratory of Global Change and Marine-Atmospheric Chemistry,Third Institute of Oceanography
【基金项目】
：
the Special Fund for Marine Researches in the Public Interest;the Chinese International Cooperation Project from the Chinese Arctic and Antarctic Administration,SOA;the Chinese International Cooperati
论文部分内容阅读
The ionic compositions of aerosol samples collected during the 26th Chinese National Antarctic Research Expedition were analyzed and the sources of ions were distinguished.Cl-,Na+,SO2-4,NO-3,and Mg2+were the most abundant ionic components in the marine aerosols.Cl- and Na+ contributed over 70％ in the total ionic composition,indicating the sea salt is still the primary composition in marine aerosols,followed by the sulfate as the secondary ionic component existed as NH4NO3,NH4HSO4,(NH4)2SO4.The maximal sea salt concentrations were found at around 40°S and could be attributed to greater winds.The concentrations of methane sulfonic acid (MSA) appeared increasing trend from the low to high latitudes,possibly caused by lower temperature in air and higher marine biological processes in the marginal waters in Antarctica.The correlation and factor analyzes were used to investigate possible sources of these ions.Cl-,Br-,Na+,K+,Mg2+ and Ca2+had predominantly marine sources; while F-,NO-3 and NH+4 had mostly anthropogenic sources; MSA had marine biogenic sources.The concentrations of SO2-4 were influenced by both marine and anthropogenic sources.
其他文献
楹联是独具中国传统的一种语言艺术形式.它对仗工整,平仄协调,言简意深,无论是语义上还是形式上都讲究衔接和连贯.本文就是从语篇的角度分析楹联的词汇与语音衔接.楹联的词汇
高校党建工作作为执政党建设的一部分,要根据时代发展要求不断进行调整,中共中央提出的创先争优活动为高校党建工作搭建了一个很好的平台,高校党建工作应抢抓机遇,推进高校党
印度共产党早在1951年就放弃武装斗争道路,寻求体制内通过选举存活.50多年来,印共的势力不断壮大,拥有丰富的选举和地方执政经验.不过,印共在发展过程中,也经历了惨痛的不断
政工干部在企业正常运作中承担着总揽全局、把握政治方向和做好思想政治工作的重任,其素质的高低决定着企业文化的好坏,也决定着企业的文明程度,如何提高政工干部素质,本文做
本文以公民参与公共政策制定的意义为切入点,从两个角度分析公民参与政策制定的限制因素,并在此基础上提出了解决相关障碍的途径.
随着《涉外民事关系法律适用法(草案)》在2010底将被审议通过,中国特色社会主义法律体系基本形成。目前国内学者对于冲突法的部门法归属并没有达成一致的意见,既有观点存在理
公司解散制度是各国立法上为了对股东进行救济的专门制度之一。我国旧公司法对该问题没有提及,在修订后的公司法第183条创立了该制度,填补了立法空白。这说明,我国的公司解散
深刻领会三项重点工作的精神实质,正确认识检察工作在推进三项重点工作中的重要作用,全面把握三项重点工作与执法办案的关系。坚持以执法办案为依托,在履行各项检察职能中深
目前,我国对大学生犯罪问题的研究主要集中于对某一类或某几类犯罪特点进行分析,尚未形成完整、系统的理论.各种媒体在对大学生犯罪案件的报道中也往往更注重对具体个案的处
The relationship between soil properties and spatial distribution of native woody species was studied in three Taita Hills forest fragments which,although degra