Seasonal features of ultrafine particle volatility in the coastal Antarctic troposphere
Seasonal features of ultrafine particle volatility in the coastal Antarctic troposphere
复制标题
南极沿海对流层超细颗粒物波动的季节特征
DOI：
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发表时间：
2011
期刊：
影响因子：
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通讯作者：
M. Shiobara
中科院分区：
文献类型：
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作者：
K. Hara;K. Osada;C. Nishita;M. Yabuki;M. Hayashi;T. Yamanouchi;M. Wada;M. Shiobara
抽象的。在日本第46-47次南极考察（2005-2007）期间，利用扫描流动粒度仪和热扩散仪对昭和站的超细气溶胶粒子的粒径分布和挥发性进行了测量。在240 °C的扫描中，非挥发性颗粒的相对丰度在夏季约为20%，而非挥发性颗粒的丰度在冬春季增加了>90%。在150-210 °C的温度范围内，绝大部分超细颗粒挥发。在夏季，这种挥发性与主要气溶胶组分（NH 4 +，SO 4 2-和CH 3 SO 3-）一致。相比之下，超细颗粒物的主要成分是海盐（Na +和Cl −）在冬春季。因此，在昭和超细颗粒物的挥发性的季节性特征与主要的气溶胶成分的季节性变化。虽然非挥发性颗粒物的相对丰度在冬春季通常较高，但丰度偶尔下降，
Abstract. The size distribution and volatility of ultrafine aerosol particles were measured using scanning mobility particle sizer and thermodenuder at Syowa Station during the 46–47 Japanese Antarctic Research Expeditions (2005–2007). The relative abundance of non-volatile particles in a 240 °C scan was approximately 20% during the summer, whereas the abundance of non-volatile particles increased by >90% during the winter–spring. Most ultrafine particles were volatilized at temperature of 150–210 °C. This volatility was consistent well to major aerosol constituents (NH 4 + , SO 4 2− and CH 3 SO 3 − ) during the summer. In contrast, major constituents of ultrafine particles were sea-salts (Na + and Cl − ) in winter–spring. Therefore, the seasonal feature of volatility of ultrafine particles at Syowa was associated with seasonal variations of the major aerosol constituents. Although the relative abundance of non-volatile particles was usually higher during the winter–spring, the abundance dropped occasionally to