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学科主题: Environmental Sciences; Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences
题名: Dissolution of aerosol iron in the surface waters of the North Pacific and North Atlantic oceans as determined by a semicontinuous flow-through reactor method
作者: Wu, J ; Rember, R ; Cahill, C
通讯作者: jwu@iarc.uaf.edu
刊名: GLOBAL BIOGEOCHEMICAL CYCLES
发表日期: 2007
卷: 21, 期:4, 页:-
收录类别: sci
部门归属: Chinese Acad Sci, S China Sea Inst Oceanol, Key Lab Trop Marine Environm Dynam, Guangzhou 510301, Guangdong, Peoples R China; Univ Alaska Fairbanks, Int Arctic Res Ctr, Fairbanks, AK 99775 USA; Univ Alaska Fairbanks, Inst Geophys, Fairbanks, AK 99775 USA
项目归属: LED
摘要: Aerosol iron dissolution in oceanic waters is determined with a semicontinuous batch-leaching method. In this procedure, aerosol samples that were collected from the marine boundary layer were leached in an all-Teflon flow-through reaction chamber by multiple aliquots of similar to 40 mL 0.4 mu m filtered oceanic surface water collected using ultraclean techniques. Each aliquot of seawater is permitted to leach the aerosol sample in the reaction chamber for a predetermined time before the seawater solution is separated from the aerosol sample by a 0.4 mu m Nucleopore filter membrane. A new aliquot of seawater is then added to the leaching chamber to continue leaching the same aerosol particles retained on the filter. The procedure is repeated with progressive increases in leaching time. The method allows the Fe released from the aerosol particles to be continuously removed from the system before saturating the complexation capacity of the seawater-leaching solution or adsorbing onto the leaching chamber wall. This method results in accurate measurements of seawater-dissolvable labile aerosol Fe that is independent of the total aerosol Fe concentrations in the sample. The aerosol Fe solubility determined using this method ranges from 3.5 +/- 1.5% for the North Atlantic during September 2005 to 5.7 +/- 2.0% for the North Pacific during April 2005 and April 2006.
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WOS记录号: WOS:000250704000001
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内容类型: 期刊论文
URI标识: http://ir.scsio.ac.cn/handle/344004/5853
Appears in Collections:热带海洋环境动力实验室(LTO)_期刊论文

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Wu, J; Rember, R; Cahill, C.Dissolution of aerosol iron in the surface waters of the North Pacific and North Atlantic oceans as determined by a semicontinuous flow-through reactor method,GLOBAL BIOGEOCHEMICAL CYCLES,2007,21(4):-
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文件名: Dissolution of aerosol iron in the surface waters of the North Pacific and North Atlantic oceans as determined by a semicontinuous flow-through reactor method .pdf
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