PM2.5传感器监测性能研究  

Research on monitoring performance of PM2.5 sensors

作　　者：王琪[1] 

机构地区：[1]上海市建筑科学研究院

出　　处：《建筑热能通风空调》2016年第7期37-39,共3页Building Energy & Environment

基　　金：上海市科委科研计划项目(15DZ1204602)

摘　　要：采用重量法仪器和5种品牌传感器对室内细颗粒物PM2.5进行采样和监测,通过测试结果的比对分析,研究传感器方法的准确度、精密度和总不确定度,以此来评价PM2.5传感器的监测性能。根据PM2.5浓度范围,实验设计分为4个工况,相关性分析表明,5个传感器和重量法仪器测定的结果均呈明显正相关,传感器A的相关系数最高(r=0.914,p<0.001),传感器D的相关系数最低(r=0.681,p<0.001)。传感器E的准确度较好,传感器B、D的平均相对偏差在20%以内,A、C则超过20%。5个传感器的平均相对标准差MRSD均大于30%,精密度都较低。5个传感器的总不确定度均高于80%,远远超过标准要求。To assess the accuracy, the precision and the relative overall uncertainty of five different sensors of PM2.5, the mass concentrations of indoor PM2.5 were respectively measured by using the five sensors and the sampler by gravimetric method at the same time. The results of PM2.5 monitored by sensors and sampler had positive correlation （r=0.914,r=0.843,r=0.749,r=0.681,r=0.857）. The accuracy of the five sensors was -22%, -17%, 32%, -14% and 6% compared with gravimetric method. The MRSD of the five sensors was greater than 30%, the precision was low. The relative overall uncertainty of the five sensors was higher than 80%, which was far more than standard limit.

关 键 词：PM2.5 传感器 准确度 精密度 总不确定度 

分 类 号：X851[环境科学与工程—环境工程] TP212[自动化与计算机技术—检测技术与自动化装置]