Sources and fluxes of Pt, Ir and REE in the Seoul metropolitan area through wet scavenging processes
Sources and fluxes of Pt, Ir and REE in the Seoul metropolitan area through wet scavenging processes
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DOI：
10.1016/j.atmosenv.2011.01.023
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发表时间：
2011-04
影响因子：
5
通讯作者：
T. Soyol-Erdene;Yeongcheol Han;Borom Lee;Y. Huh
中科院分区：
文献类型：
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作者：
T. Soyol-Erdene;Yeongcheol Han;Borom Lee;Y. Huh
对2008年夏季在首尔收集的雨水样品中的铂族元素（PGEs: Pt和Ir）和稀土元素（ree）进行了分析，以确定其来源并量化其对地球表面环境的湿沉积通量。主要元素（Na， K, Mg, Ca, NH4+, SO42−,NO3−，Cl−和F−）和次要元素（Fe, Ba， Y和Hf）也被测量以方便解释。元素相关性、地壳富集因子、Ir/Pt比值和稀土模式的评价表明，Pt和Ir的大气/火山来源以及Pt的其他人为来源。稀土元素主要来自地壳。浓度与降雨量的关系表明，云下清除（冲刷）是大多数元素的主要清除机制。首尔的湿沉降通量高于极地冰芯中Pt和Ir的记录，与东亚其他雨水中ree的研究结果相当。
Platinum group elements (PGEs: Pt and Ir) and rare earth elements (REEs) were analyzed in rainwater samples collected in Seoul during the summer of 2008 to identify their sources and quantify their wet-deposition fluxes to the Earth’s surface environment. Major (Na, K, Mg, Ca, NH4+, SO42−, NO3−, Cl−and F−) and minor (Fe, Ba, Y and Hf) elements were also measured to facilitate interpretation. Evaluation of elemental correlations, crustal enrichment factors, Ir/Pt ratios and REE patterns indicated meteoric/volcanic sources for Pt and Ir and additional anthropogenic sources for Pt. REEs were predominantly of crustal origin. The relationship between concentrations and rainfall indicated that below-cloud scavenging (wash-out) was the main scavenging mechanism for most elements. The wet-deposition fluxes in Seoul were higher than those recorded in polar ice cores for Pt and Ir and were comparable to those from other rainwater studies of REEs in East Asia.