阿克达拉大气NH3浓度特征分析

Analysis of the Characteristics of Atmospheric NH3 Concentration in Akedala

摘要: 利用阿克达拉区域大气本底站NH3分析仪实现大气中NH3的在线连续观测，并在观测过程中进行了严格的质量控制，得到阿克达拉地区NH3浓度的年和日特征。结果显示：阿克达拉地区NH3的季节变化是冷季(11~4月)浓度低，暖季(5~10月)浓度高；最大值为198.66 ppb，发生在8月10日。最小值为0.19 ppb，发生在4月20日，与季节变化特征相匹配。阿克达拉地区NH3白天比夜晚浓度高；受局地排放(农业和土壤排放)的影响显著。阿克达拉地区NH3与其它一次污染物的相关性差，表明其来源的不同；NH3的月均值浓度显著高于其他一次污染物的浓度。

Abstract: By carrying out the on-line continuous observation of atmospheric NH3 in Akedala regional at-mospheric background station, and implementing the strict quality control during the observation, we obtained the annual and diurnal characteristics of NH3 concentration. The results showed that: the NH3 concentration is low in cold season (November-April); while the NH3 concentration is high in warm season (May-October). The maximum value is 198.66 ppb on August 10th. The minimum value is 0.19 ppb on April 20th, which is similar with the character of seasonal variation. The NH3 concentration in the day is higher than that at night. The NH3 concentration is affected significantly by local emissions (i.e. agriculture and soil emission). The correlation between NH3 and other primary pollutants is low in Akedala. It means that their sources are different. The monthly average concentration of NH3 was significantly higher than that of other primary pollutants.