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中国农学通报

中国农学通报 ›› 2010, Vol. 26 ›› Issue (17): 357-361.

所属专题： 农业气象

• 资源 环境 生态 土壤 气象 • 上一篇    下一篇

鼎湖山地区大气颗粒物中水溶性无机盐粒径分布特征

刘鲁宁 郝庆菊   

  • 收稿日期:2010-03-09 修回日期:2010-05-04 出版日期:2010-09-05 发布日期:2010-09-05
  • 基金资助:

    国家“863”高技术研究发展计划项目“大气复合污染关键气态污染物的快速在线监测技术”;国家“973”重点基础研究发展规划项目“区域复合污染的多界面过程及多介质传输机制”

Size Distributions of Water Soluble Ions of Atmosphere in the Mt. Dinghu

  • Received:2010-03-09 Revised:2010-05-04 Online:2010-09-05 Published:2010-09-05

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摘要：

为研究珠江三角洲大气颗粒物的化学组成特征及其来源，2008年10-11月在中科院华南植物研究所鼎湖山区域大气本底观测站对大气中的颗粒物进行了分级（8级）采样，并对各个粒径段颗粒物中水溶性无机盐进行了分析。结果表明，SO42-、NH4+在小于1.1μm的细粒子中出现浓度峰值；Na+和Cl-在1.1-2.1μm出现浓度峰值；NO3-分别在1.1-2.1和3.3-4.7μm出现两个浓度峰值；K+在0.65-1.1和5.8-9μm两个粒径段出现峰值；而Ca2+和Mg2+的浓度峰值则出现在大于9μm粒径段。

关键词: 马蓝, 马蓝, RAPD, DNA, 反应体系

Abstract:

In order to study on the characteristics of chemical compositions and the sources of the atmospheric particles in Pearl River Delta Region (PRD), particle samples were collected with cascade impactor (8 classes) from the atmosphere in the Mt. Dinghu, the atmospheric baseline monitoring station of PRD region, during the autumn ( from Oct. to Dec.) of 2008, in Guangdong Province. Water soluble ionic concentrations were analyzed in the different size particles. The results were indicated as following: ①The highest concentration of SO42- and NH4+ appeared mainly when the fine particles with the size under 1.1μm. And highest concentrations of Na+ and Cl- were within the particles size of 1.1-2.1μm; ②The concentration of NO3- and K+ that were two modes with the higher concentration at 1.1-2.1μm, 3.3-4.7μm and 0.65-1.1μm, 5.8-9μm, respectively; ③The concentration of Ca2+ and Mg2+ presented mainly within coarse particles with the peak at more than 9μm.