| 引用本文: | 赵竹子,曹军骥,刘随心.2010.青海湖区域背景点夏季大气NO2，SO2 和O3 浓度变化规律[J].地球环境学报,(3):201-207 |
| ZHAO Zhu-zi,CAO Jun-ji,LIU Sui-xin.2010.The variations of NO2, SO2 and O3 at an atmospheric background site in Qinghai Lake in summer, northeasternTibetan Plateau[J].Journal of Earth Environment,(3):201-207 |
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| 摘要: |
| 利用ECOTECH 公司系列气体监测仪，对青海湖区域背景点夏季的大气污染物的变化规
律及其和气象因素之间的关系进行了分析。结果表明，夏季三种气体中NO2 浓度较低，平均值
为2.30×10-9，其日内变化呈现单峰形式，日较差非常小；SO2 浓度较高，平均值达到20.82×10-9，
波幅变化较大, 其日内变化表现的较不规则；O3 浓度夏季平均值高达57.63×10-9，日变化呈现单
谷形态，早晨7:00-8:00 达到最低值；三种污染物均在凌晨或午夜达到高值。和气象因子的相关
分析表明，NO2 静风情况下浓度较低，主要污染源为西北及东北方向的公路及铁路机动车排放；
SO2 主要来源于当地生物质燃烧排放，同时东南风向时其浓度增高；静风时O3 浓度最高，其受
风向影响较小。 |
| 关键词: 二氧化氮 二氧化硫 臭氧 变化特征 背景点 |
| DOI：10.7515/JEE201003007 |
| CSTR： |
| 分类号:X131.1 |
基金项目:国家十一五科技支撑项目“青海湖流域生态和环境治理技术集成与试验示范”(2007BAC30B01)
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| The variations of NO2, SO2 and O3 at an atmospheric background site in Qinghai Lake in summer, northeasternTibetan Plateau |
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ZHAO Zhu-zi1,2, CAO Jun-ji1,3, LIU Sui-xin1
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1. State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment , Chinese Academy of
Sciences, Xi'an 710075, China; 2. Graduate University of the Chinese Acadamy of Sciences, Beijing 100049, China; 3.
Institute of Global Environmental Change, Xi’an Jiaotong University, Xi'an 710049, China
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| Abstract: |
| ECOTECH EC series air analyzers were used to continuously monitor SO2, NO2 and O3 at
Qinghai Lake regional background monitoring station (36°58′37″N, 99°53′56″E) from July 4th to August
31th, 2010. The variations of NO2, SO2, and O3 concentrations and the relationships between pollutant
concentrations and meteorological factors were discussed in this paper. The average concentration of
NO2 were very low, the diurnal variation of NO2 showed one peak and the daily difference range of
NO2 was relatively small. However, SO2 was about 20.82×10-9 in summer in Qinghai Lake, and the
diurnal variation of SO2 was not regular. O3 concentration was high (average 57.63 ×10-9) in summer at
monitoring site. The diurnal variation of O3 concentration was remarkable with the minimum around
7:00-8:00. The highest concentrations of NO2, SO2 and O3 all appeared at night and early morning.
Correlations between NO2, SO2, O3 concentrations and meteorological factors indicated that NO2 was
very low when the calm wind condition occurred and obviously high when northwest and northeast winds
prevailed. The pollutant concentrations largely infl uenced by the vehicle emission from the highway and
railway. SO2 was mostly infl uenced by the biomass-burning emission sources around the measurement
site and the concentration was higher when the wind direction was southeast. The concentration of O3
was highest when the wind was calm. |
| Key words: NO2SO2O variability air background |
