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Observation and Analysis of SO2 and NO2 in Clean Air of Western China
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摘要: 在我国青海省瓦里关大气本底基准观象台（海拔3810 m,100°54′E,36°17′N）,利用浸渍膜法采集大气中的SO2和NO2，使用离子色谱分析其浓度。1994年8月至1995年7月的测量结果表明，SO2和NO2的平均浓度分别为0.147×10-9和0.055×10-9,SO2和NO2两者具有较好的相关性，其相关系数r=0.87,它们的平均比值为2.6左右。SO2和NO2的浓度受季节和风向的影响，偏东风时浓度较高，偏西风时浓度较低。冬季SO2和NO2的浓度水平较低，而夏季浓度较高。Abstract: Atmospheric SO2 and NO2 were sampled during the period from August 1994 to July 1995 by using filter packs (FP) method, and the concentrations of these gases were analysed with ion chromatography (IC) at Waliguan background baseline station (3810 m asl, 100o54’E, 36o17’N) of Qinghai Province, western China. It is found that the average concentrations of SO2 and NO2 are 0.147×10-9 and 0.055×10-9 ,respectively. There is a good correlation between SO2 and NO2 concentrations with a coefficient of 0.87, the ratio of SO2 to NO2 derived from the linear regression is about 2.6. Furthermore, the concentrations of SO2 to NO2 vary with seasons and wind directions. Higher concentrations are from easterly, and lower from westerly. The concentrations of SO2 and NO2 are lower in winter season and higher in summer.
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Key words:
- Sulfur-dioxide;
- Nitrogen-dioxide;
- Clean air;
- Observation
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