重量法测定环境空气中总悬浮颗粒物的不确度评定  

Evaluation of uncertainty in the determination of total suspended particulate matterin ambient air by gravimetric method

作　　者：颜燕玲 Yan Yan-ling(Dehua County Environmental Monitoring Station,Dehua,Fujian 362500,China)

机构地区：[1]泉州市德化环境监测站,福建泉州德化362500

出　　处：《福建分析测试》2023年第6期43-46,共4页Fujian Analysis & Testing

摘　　要：对重量法测定环境空气中总悬浮颗粒物的不确定度进行评定,分析不确定度的来源和分量,得出测定过程的不确定度主要影响因素为采样器流量;因此在采集样品中,要加强采样器的维护保养、定期检定,保证采样器设备流量的准确性。环境空气中总悬浮颗粒物的测定结果为53.1μg/m^(3)时,其扩展不确定度为2.3μg/m^(3),(k=2)。The uncertainty of measuring total suspended particulate matter in ambient air with gravimetric method was evalu⁃ated.The sources and components of the uncertainty were analyzed.It was determined that the main influencing factor for the measurement uncertainty was the flow rate of the sampler.Therefore,for sample collecting,it is necessary to strengthen the maintenance and regular calibration of the sampler to ensure the accuracy of the flow rate.When the measurement result of total suspended particulate matter in the ambient air is 53.1μg/m^(3),its expanded uncertainty is 2.3μg/m^(3),(k=2).

关 键 词：重量法 总悬浮颗粒物 不确定度 

分 类 号：O657.3[理学—分析化学]