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本文以2007-2010年榆林城区环境空气质量监测数据为依据,对榆林城区以SO2、NO2和颗粒物为主要污染物的空气质量趋势和特征进行了年度、季和每日不同时点的分析,结果表明:榆林城区环境空气质量逐年好转。SO2和PM10的季节性污染特征较明显,SO浓度峰值主要集中在冬季采暖期,2PM10浓度峰值主要集中在春季沙尘发生期,NO2浓度季节性变化较稳定,空气质量趋势和特征与气候地理生活习惯有很大关系。
Based on the monitoring data of ambient air quality in Yulin City from 2007 to 2010, the paper analyzes the air quality trends and characteristics of Yulin urban area with SO2, NO2 and particulate matter as the main pollutants at annual, seasonal and daily time points. Results Show: Yulin city ambient air quality is getting better year by year. The seasonal pollution characteristics of SO2 and PM10 are obvious. The SO2 concentration peak mainly concentrates in winter heating period. The peak of 2PM10 concentration mainly concentrates in the spring sandstorm period, and the seasonal variation of NO2 concentration is stable. The trend and characteristics of air quality and climatic geography Habits have a great relationship.