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固定源PM2.5稀释采样器的研制
固定源 PM2.5 稀释采样 性能评估
2015/11/5
为研究固定源PM2.5的排放特征,研制开发了一套紧凑型稀释采样器,能模拟高温烟气排放到大气中的冷却、稀释、凝结等物理化学过程,采集固定源排放的一次PM2.5.稀释采样器主要的技术参数如下:稀释比在20:1~50:1范围内,在稀释器里的停留时间为10 s,稀释后的烟气温度和相对湿度分别小于42℃和50%,满足ISO 25597:2013的要求.稀释采样器的性能评价实验表明,稀释器气密性良好,稀释空气...
于2009—2010年各季节典型月在成都城区采集了大气PM2.5样品,对PM2.5的质量浓度及其主要化学成分(含碳组分、水溶性无机离子和元素)进行了测定. 结果显示:成都城区PM2.5平均质量浓度高达(165.1±85.1)μg·m-3,是国家环境空气质量标准年均PM2.5限值的4.7倍. OC、EC和水溶性二次离子(SO42-,NO3-和NH4+)的平均浓度分别为(22.6±10.2)μg·m-...
Physicochemical Properties of PM2.5 and PM2.5–10 at Inland and Offshore Sites over Southeastern Coastal Region of Taiwan Strait
Coastal region Particulate matter Sampling and analysis Physicochemical properties Backward trajectory
2016/3/28
This study investigates the effects of sea-land breezes (SLBs) and northeastern monsoon (NEM) on the physicochemical
properties of particulate matter (PM) in the atmosphere over southeastern coastal ...
An Upwind/Downwind Comparative Study of the Solvent Extractable Organic Compounds in PM2.5 in Hong Kong
aerosol PM2.5 solvent-extractable organic compounds transport Hong Kong
2016/3/30
Seven sets of samples that were taken from sites upwind and downwind of Hong Kong during the
summer and winter seasons were analyzed. The solvent extractable organic compounds (SEOC) were
separated ...