Year-round behavior for inorganic composition of size-resolved airborne particles in Himeji City, Japan
Year-round behavior for inorganic composition of size-resolved airborne particles in Himeji City, Japan
复制标题
日本姬路市尺寸分辨空气颗粒无机成分的全年行为
DOI：
10.1142/s0129083512400104
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发表时间：
2012
期刊：
影响因子：
--
通讯作者：
Saitoh K
中科院分区：
文献类型：
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作者：
Kadota A;Miura K;Okamura T;Fujiyoshi A;Ohkubo T;Kadowaki T;Takashima N;Hisamatsu T;Nakamura Y;Kasagi F;Maegawa H;Kashiwagi A;Ueshima H.;Saitoh K
作为空气颗粒物(PM)和臭氧对哮喘发作影响的流行病学研究的一部分，我们在Himeji市进行了PM的大小分辨采样，并对PM样本进行了元素和离子组成分析。使用三级NLAS冲击器(东京Dylec株式会社；采样阶段的颗粒切割尺寸为10、2.5min和1.0minm，流速为3 L/μ)以一周的基本采样间隔收集尺寸分辨的PM，PM采样于2009年11月开始。用PIXE和离子色谱分别测定了PM样品中几种元素和离子的浓度。研究结果对大气中可吸入颗粒物的物理化学特征具有重要意义，有助于详细分析大气中颗粒物的全年行为。特别值得注意的是，PM10主要是NO3-和SO42-，PM2.5只有SO42-。这可能说明了NO_3~-和SO_4~-的不同形成过程。
As a part that, an epidemiological study on the effects of physicochemical characterization of airborne particulate matter (PM) and ozone on asthma attacks, we carried out size-resolved sampling of PM in Himeji City, and elemental and ionic composition analyses of the PM sample. Size-resolved PM was collected using a 3-stage NLAS impactor (Tokyo Dylec Co., Ltd.; particle cut size at sampling stages was 10, 2.5 and 1.0 μm for a flow rate of 3 L/min) with a one-week base sampling interval, and the PM sampling was begun in November, 2009. Concentrations of several elemental and ionic species in the PM sample were determined by PIXE and ion chromatography analysis, respectively. The research results are important for the physicochemical characterization of PM in atmosphere, enabling detailed analysis of the year-round behavior. Of particular note, is that the PM10was mainly NO3-and SO42-and PM2.5was only SO42-. This is believed to suggest the different formation processes of NO3-and SO42-.