环球海洋大气气溶胶化学研究 Ⅰ.Na、Mg、K、Cl、Ca、Br、F的特征
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摘要: 利用我国“极地号”科学考察船的南极和环球科学考察,采集了太平洋、南极海域、南大西洋、印度洋及航线近岸海域大气的58个气溶胶样品,对Na、Mg、K、Cl、Ca、Br、F进行多元相关分析表明,气溶胶中的Na、Mg、K主要来自海洋,它们之间的比值接近其在大洋海水的平均比值;Cl和Ca在大洋上空也主要来自海水,但近岸海域大气,却明显受到陆源物质输送影响,呈现出不同的Cl/Na和Ca/Na比值;Ca、Br、F在大气中的富集,在大洋上空可能归因于海洋生物活动或海洋微表层富集作用,而在近岸大气,归因于陆源输送影响.
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