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Soluble species in aerosols collected on the route of the Second Chinese National Arctic Research Expedition

【标题】Soluble species in aerosols collected on the route of the Second Chinese National Arctic Research Expedition

【Title】Soluble species in aerosols collected on the route of the Second Chinese National Arctic Research Expedition

【作者】 徐建中; 孙俊英; 任贾文; 秦大河

【Author】 Xu Jianzhong ; Sun Junying ; Ren Jiawen ; Qin Dahe

【期刊】极地研究

【Journal】

【期刊年份】2005

【卷】16

【期】

【关键词】 Marine acrosol; Arctic; Soluble species; MSA

【Keywords】 Marine acrosol; Arctic; Soluble species; MSA

【摘要】Aerosol samples are collected on the route of the Second Chinese National Arctic Research Expedition from July 15 to September 28, 2003.The concentration of water soluble ions (Na + , NH 4 + , Ca 2+ , Cl - , MSA, SO 4 2- and so on) are analyzed. By correlation analysis,the ions can be divided into three groups: (1) Na + , Mg 2+ , K + , Ca 2+ , Cl - , SO 4 2- , mainly from sea salt; (2) NH 4 + , NO 3 - ,markedly from coastal regions of the continents; (3)Acetate, MSA, C 2 O 4 2- , from other sources.Marine aerosols are the dominant origin, Cl - and Na + are the most dominant anion and cation, respectively and these two ions (Na + +Cl - account for 55.6% of the total aerosol loading. The mean equivalence ratio of NH 4 + /SO 4 2- is 0.45, we suggest that ammonium and sulfate exist mainly as NH 4 HSO 4 . The concentration of NO 3 - shows three different patterns on the route of expedition: Japan Sea with median value of 15.2 neq·m -3 ; Sea of Okhostk and Bering Sea of 1.8 neq·m -3 and Arctic Ocean of 0.4 neq·m -3 . Bering Sea is a high MSA area. Through the comparison of the concentration of main water soluble ions between the First and Second Chinese National Arctic Research Expedition,the variation matches each other.

【Abstract】Aerosol samples are collected on the route of the Second Chinese National Arctic Research Expedition from July 15 to September 28, 2003.The concentration of water soluble ions (Na + , NH 4 + , Ca 2+ , Cl - , MSA, SO 4 2- and so on) are analyzed. By correlation analysis,the ions can be divided into three groups: (1) Na + , Mg 2+ , K + , Ca 2+ , Cl - , SO 4 2- , mainly from sea salt; (2) NH 4 + , NO 3 - ,markedly from coastal regions of the continents; (3)Acetate, MSA, C 2 O 4 2- , from other sources.Marine aerosols are the dominant origin, Cl - and Na + are the most dominant anion and cation, respectively and these two ions (Na + +Cl - account for 55.6% of the total aerosol loading. The mean equivalence ratio of NH 4 + /SO 4 2- is 0.45, we suggest that ammonium and sulfate exist mainly as NH 4 HSO 4 . The concentration of NO 3 - shows three different patterns on the route of expedition: Japan Sea with median value of 15.2 neq·m -3 ; Sea of Okhostk and Bering Sea of 1.8 neq·m -3 and Arctic Ocean of 0.4 neq·m -3 . Bering Sea is a high MSA area. Through the comparison of the concentration of main water soluble ions between the First and Second Chinese National Arctic Research Expedition,the variation matches each other.

【基金/项目】

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