| 北京市燕山地区大气颗粒物中NO3－和SO42－浓度变化规律及其与O3 |
| 摘要点击 764 全文点击 962 投稿时间：1995-04-21 |
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| 中文关键词 颗粒物 NO3- SO42- 离子色谱 北京燕山地区 |
| 英文关键词 particulate nitrate sulfate ozone ion chromatography |
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| 中文摘要 |
| 用KB-120型大气颗粒采样器采样,离子色谱法分析其中水溶性无机阴离子组分。结果表明,北京市燕山石油化工区大气颗粒物中NO3-和SO42-浓度随季节变化显着,夏季NO3-和SO42-平均浓度分别为9.40μg/m3和28.22μg/m3;秋季分别为4.12μg/m3和3.80μg/m3。 |
| 英文摘要 |
| The title study was carried out in summer and autumn,in which the seasonal variations were aslo related to the atmospheric concentration of ozone as a major photochemical oxidant. The results show that the concentrations of nitrate and sulfate in atmospheric particulates varied significantly with seasons,and were higher in summer that in autunm. In addition,the concentration of nitrate and sulfate were often of high values in one or two days before raining and in 3 or 4 days after raining. This indicates that rainfall had a significant effect of scavenging particulates. The level of nitrate in particulates was found to have a much better correlation with ozone concentration than the level of sulfate in particulates. |
