摘要
一次颗粒物的粒径分布及化学组分等对雾霾形成和健康具有显著影响.为了认识一次颗粒物的粒径分布,本文基于颗粒物相关理论计算,研制了一套颗粒物再悬浮分级采样装置,并对其运行稳定性进行了评价.结果表明,对TSP、PM_(10)、PM_(2.5)样本质量进行方差分析,所得F值分别为0.42、0.07和1.34,远远小于F_(0.95)(2,17)=3.59;对PM10占TSP比重、PM2.5占PM10比重进行方差分析,F值为0.53,远远小于F_(0.95)(9,19).说明颗粒物在再悬浮腔体中能够均匀分布,该颗粒物再悬浮采样装置可以满足一次颗粒物的分级采样.
Particle size distribution and chemical composition of the primary particles have significant influences on the formation of haze and human health. In order to understand the size distribution of the primary particles,a resuspension sampling device had been developed which was based on the calculation of particle correlation theory. The stability of the device was evaluated. The results indicated that： The quantity of TSP,PM_（10） and PM_（2.5） samples were analyzed by variance analysis. F values were 0.42、0.07 and 1.34 and far less than F_（0.95）（ 2,17）. The variance analysis of PM10/TSP and PM_（2.5）/PM_（10） was conducted,respectively. F value was 0.53 which was far less than F_（0.95）（ 9,19） = 3.59. The results demonstrated that the particles could be uniformly distributed in the resuspension cavity. The sampling device was able to satisfy the requirement of size classification of primary particles.
作者
申一文
解姣姣
朱洪涛
苑春刚
SHEN Yiwen XIE Jiaojiao ZHU Hongtao YUAN Chungang(Department of Environmental Science ＆ Technology, North China Electric Power University, Baoding, 071003, China)
出处
《环境化学》
CAS
CSCD
北大核心
2018年第10期2113-2123,共11页
Environmental Chemistry
基金
国家自然科学基金(91543107)
中央高校基本科研业务费专项资金(2017ZZD07)资助~~
关键词
颗粒物
再悬浮装置
分级
稳定性
particulate matters
resuspension device
classification
stability.
