沙尘暴天气下大气颗粒物质量浓度特征研究

Analysis of Mass Concentration Characteristics of Atmospheric Particles in Sandstorm Weather

通过试验方式分析沙尘暴天气下大气颗粒物质量浓度特征。利用不同型号的采样器、不同厚度的滤膜,采集PM_(10)和PM_(2.5)试样;根据质量浓度和化学成分分析要求,制定样品成分检测方案;依据大气颗粒物质量浓度计算公式,获得夏季和冬季的PM_(10)和PM_(2.5)采样信息,并对信息进行均值化处理,获得大气颗粒物质量浓度季节性变化规律。根据沙尘暴天气下大气颗粒物质量浓度特征分析结果可知,此时PM10和PM_(2.5)的质量浓度均有提高,可见沙尘暴天气影响大气颗粒物质量浓度。

The characteristics of mass concentration of atmospheric particulate matter under sandstorm weather were analyzed through experiment.Samples of PM_(10) and PM_(2.5) were collected using different types of samplers and filter membranes of different thickness.According to the requirements of mass concentration and chemical composition analysis,this study sets up the sample composition testing program.Sampling information of PM_(10) and PM_(2.5) in summer and winter were obtained according to the calculation formula of mass concentration of atmospheric particulate matter,and the information was averaged to obtain the seasonal variation rule of mass concentration of atmospheric particulate matter.According to the analysis results of mass concentration characteristics of atmospheric particulate matter in sandstorm weather,the mass concentration of PM10 and PM_(2.5) are both increased at this time,indicating that sandstorm weather affects the mass concentration of atmospheric particulate matter.