【作者】 杨复沫； 贺克斌； 马永亮； 时宗波； 陈旭； 查良镇； 范朝； 马越超；

【Author】 YANG Fu-mo HE Ke-bin MA Yong-liang SHI Zong-bo CHEN Xu CHA Liang-zhen FAN Chao MA Yue-chao School of Earth Science, Graduate School of Chinese Academy of Science, Beijing 100049 Department of Environmental Science and Engineering, Tsinghua University, Beijing 100084 Department of Electronic Engineering, Tsinghua University, Beijing 100084 Heibei Sailhero High-tech Co., Ltd. 050051

【机构】 中国科学院研究生院地球科学学院； 清华大学环境科学与工程系； 清华大学电子科学与工程系； 河北先河科技发展有限责任公司；

【摘要】 研制的多通道PM2.5采样器可实现一次采集的PM2.5样品满足对其质量浓度、化学组成及其微观形貌特征的分析。基于空气动力学原理和惯性碰撞原理,利用自行开发的设计计算软件,完成了PM2.5切割器特性尺寸的精确设计,并对其切割性能进行了敏感性分析。试验室验证、与美国同类商业化采样器的平行采样对比以及在三个城市的现场应用均表明,多通道PM2.5采样器的整体性能满足要求。更多还原

【Abstract】 A multi-channel PM2.5 samplers is developed to fulfill the need that one set of samples collected are capable of being used for all the measurement of mass, routine chemical specication, and single particles. On the basis of aerodynamic theory and inertial impact, PM2.5 impactor is designed by using impactor-calculating software self-developed. Its panicle separating performance impacted by nozzle sizes, flow-rate, and circumstance factors is also analyzed. This multi-channel PM2.5 sampler is fit for ambient PM2.5 sampling, of which the integral performance is verified with experimental test, parallel sampling comparison with a homogeneous commercial sampler made in the USA, and field sampling in three typical cities.更多还原