β射线法与重量法监测环境空气PM_(2.5)的应用比较  

STUDY ON THE COMPARISON AND APPLICATION OF β-RAY METHOD AND GRAVIMETRIC METHOD FOR THE MONITORING OF AMBIENT AIR PM_(2.5)

作　　者：陈芳[1] 陈峰 余华 范柳澄 许丽忠[3] 

机构地区：[1]福建师范大学福清分校海洋与生化工程学院,福建福清350300 [2]福建省福州市环境监测站,福州350000 [3]福建师范大学环境科学与工程学院,福州350007

出　　处：《环境工程》2017年第8期146-151,共6页Environmental Engineering

基　　金：福建省中青年教师教育科研项目:福州市颗粒物时空分布特征及健康效益研究(JAT160567);福建省社会科学规划项目:海西地区大气颗粒物暴露风险研究(FJ2016C036);福建省环保科技计划项目(2013R003);近海流域环境测控治理福建省高校重点实验室(福建师范大学福清分校)开放基金资助

摘　　要：重量法是测量PM_(2.5)的传统手工经典方法,而β射线法加动态加热系统联用光散射法作为自动在线监测技术的常用方法被广泛使用。将5030-SHARP型β射线法加动态加热系统联用光散射法PM_(2.5)自动监测设备监测结果与手工法测量结果进行比对、分析,结果表明:β射线法与重量法监测结果具有一致性,测量结果不存在显著性差异;β射线法与重量法相对偏差值与温度、相对湿度、风速等气象因子的相关性不明显;β射线法与重量法监测结果的差异性与PM_(2.5)质量浓度、季节等条件有关;随着PM_(2.5)质量浓度逐渐升高,β射线法与重量法相对偏差的绝对值|RD|也随之增大,不同季节的|RD|平均值差异较大,春季、冬季的|RD|平均值大于夏季、秋季。Gravimetric method is a traditional manual method to detect PM2.5,while β-ray ＋ DHS ＋ light scattering method is widely used as automatic online monitoring technique. In this paper,we compared the PM2.5monitoring results with the model 5030-SHARP β-ray ＋ DHS ＋ light scattering automatic monitoring equipment and gravimetric method. The results showed that：Monitoring data between β-ray method and gravimetric method had a high consistency,there was not significant difference between them. The temperature,relative humidity and wind speed exerted little effect on the relative deviation values betweenβ-ray method and gravimetric method. The divergence between β-ray method and gravimetric method was related to PM2.5concentrations and seasons. As the PM2.5concentrations were more higher,the absolute relative deviation（ ｜ RD ｜） values between β-ray method and gravimetric method became greater. The average ｜ RD ｜ values differed a lot in different seasons,the average ｜ RD ｜ values in spring and winter were higher than that in summer and autumn.

关 键 词：Β射线法 重量法 PM2.5 监测 

分 类 号：X831[环境科学与工程—环境工程]