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| 沙尘暴事件中大气颗粒物化学组分的浓度变化和硫酸盐的形成 | |
| 引用本文： | 刘咸德,董树屏,李 冰,高占君,李玉武,MOON Kil-Choo,GHIM Young Sung.沙尘暴事件中大气颗粒物化学组分的浓度变化和硫酸盐的形成[J].环境科学研究,2005,18(6):12-17. |
| 作者姓名： | 刘咸德 董树屏 李 冰 高占君 李玉武 MOON Kil-Choo GHIM Young Sung |
| 作者单位： | 1. 中国环境科学研究院,北京,100012 2. 国家环境分析测试中心,北京,100029 3. 国家地质实验测试中心,北京,100037 4. 烟台环境监测中心站,山东,烟台,264003 5. 韩国科学技术研究院,韩国,汉城,136-791 |
| 基金项目： | 国家自然科学基金资助项目（20177036）;国家自然科学基金资助项目（20477042）;国家重点基础研究计划项目（2003CB415003）;丰田基金项目（D01-B3-125）;中国-比利时双边合作项目（BIL01/57） |
| 摘 要： | 应用电感耦合等离子体原子发射光谱、质谱和离子色谱分析了2002年3月28日-4月8日在山东长岛县采集的共11对粗、细大气颗粒物样品的化学组成，探讨4月6-8日沙尘暴事件中大气颗粒物化学组分的变化和硫酸盐的形成。沙尘暴事件应区分前锋和后续部分，前锋与大气中各种污染物相互作用，具有硫富集的特征。后续部分较好地保持了长距离传输风沙尘本身的特征。硫酸盐的形成机理可能是多相氧化而不是简单的酸碱中和。硫酸铵是首先生成的含硫物种，这是细颗粒主导的形成过程。硫酸铵逐渐转化为其他硫酸盐，硫的成分也逐渐向粗颗粒转移。在沙尘暴事件中含硫污染物不但有一个从气相向颗粒物转变的过程，也有一个从细颗粒向粗颗粒转化的过程。 |
| 关 键 词： | 大气颗粒物 沙尘暴事件 硫酸盐形成 |
| 文章编号： | 1001-6929（2005）06-0012-06 |
| 收稿时间： | 2004-11-23 |
| 修稿时间： | 2004-11-23 |
Concentration Variation of Atmospheric Aerosol Constituents and Sulfate Formation during An Asian Dust Event |
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| LIU Xiande,DONG Shu-ping,LI Bing,GAO Zhan-jun,LI Yu-wu,MOON Kil-Choo and GHIM Young Sung.Concentration Variation of Atmospheric Aerosol Constituents and Sulfate Formation during An Asian Dust Event[J].Research of Environmental Sciences,2005,18(6):12-17. | |
| Authors: | LIU Xiande DONG Shu-ping LI Bing GAO Zhan-jun LI Yu-wu MOON Kil-Choo and GHIM Young Sung |
| Affiliation: | 1. Chinese Research Academy of Environmental Sciences, Beijing 100012, China; 2. National Research Center for Environment Analysis and Measurements, Beijing 100029, China; 3 .National Research Center for Geo-Analysis, Beijing 100037, China; 4.Yantai Environmental Monitoring Center, Yantai 264003, China; 5.Korea Institute of Science and Technology, Seoul 136-791, Korea |
| Abstract: | ICP-AES, ICP-MS and IC were used to analyze the chemical composition of fine and coarse fractions of atmospheric aerosol samples collected in Changdao, Shandong Province from March 28 to April 8, 2002, in order to investigate the concentration variation of aerosol constituents and sulfate formation route during the Asian Dust event from April 6 to 8, 2002. The Asian Dust event could be divided into the front part and the sequential part. The mineral dusts of the front part intereacted extensively with a variety of pollutants, and featured by the elevated sulfur content; while mineral dusts of the sequential part preserved their inherent chemical compositional characteristics during long-range transport process. Ammonium sulfates were found the major compounds mainly in fine mode aerosol. It implies that heterogeneous phase oxidation as the major route for sulfate formation, rather than the neutralization between basic components of mineral dusts and acidic pollutants in air. This formation process was dominated by fine particles. Ammonium sulfates might be converted into other sulfates such as koktaite and gypsum during atmospheric transport. During transportation course of the Asian Dust, conversion of sulfur-containing pollutants goes on not only from gases to particulate, but also from fine to coarse particles. |
| Keywords: | atmospheric aerosol Asian Dust event sulfate formation |
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