重量法PM_(2.5)/PM_(10)颗粒物自动监测仪校准方法研究  

Research on the Calibration Method of PM_(2.5)/PM_(10)Particle Automatic Monitoring Instruments Based on Gravimetric Method

作　　者：张文阁[1] 刘巍 赵亮 陈金玚 周欢欢 ZHANG Wenge;LIU Wei;ZHAO Liang;CHEN Jinchang;ZHOU Huanhuan(National Institute of Metrology,Beijing 100029,China;Qingdao Institute of Measurement Technology,Qingdao 266101,China;Dalian Institute of Measurement and Testing,Dalian 116032,China;China Jiliang University,Hangzhou 310018,China)

机构地区：[1]中国计量科学研究院,北京100029 [2]青岛市计量技术研究院,青岛266101 [3]大连计量检验检测研究院有限公司,大连116032 [4]中国计量大学,杭州310018

出　　处：《计量科学与技术》2024年第11期16-21,共6页Metrology Science and Technology

基　　金：国家重点研发计划项目(2022YFC3700500/2022YFC3700500-05-01);中国计量科学研究院科研横向项目(YFCWR2302)。

摘　　要：为确保环境颗粒物PM_(2.5)/PM_(10)监测数据的准确可靠,针对重量法PM_(2.5)/PM_(10)颗粒物自动监测仪溯源方法进行了研究。通过对监测仪结构和工作原理的分析,确定了影响其测量准确度并能够体现此类仪器共性特征的参数和关键技术。介绍了采样单元、恒温恒湿模块、称重模块和滤膜除静电模块等关键模块的功能、参数以及其中影响仪器测量准确性的因素,研究了仪器的校准方法,提取了对应的计量性能参数,并且对计量性能参数的指标进行了规定,以市场占有率较高的监测仪为典型,通过大量试验验证了制定计量性能参数指标的合理性和测试方法的可行性,同时分析了校准过程的影响因素,给出了关键参数校准结果的不确定度评定方法,为进一步推动制定相应的技术规范,指导该类仪器校准数据的准确、有效奠定了基础。To ensure the accuracy and reliability of PM_(2.5)/PM_(10)monitoring data,this study investigates the traceability method for automatic PM_(2.5)/PM_(10)particle monitoring instruments based on the gravimetric method.By analyzing the structure and working principles of these instruments,key parameters and technologies that influence measurement accuracy and are common to such instruments were identified.The study introduces the functions,parameters,and influencing factors of key modules such as the sampling unit,constant temperature and humidity module,weighing module,and filter membrane electrostatic removal module.Calibration methods were developed,and corresponding measurement performance parameters were extracted,along with specified indicator values.Through extensive experiments,using widely adopted monitoring instruments,the rationality of the performance parameter indicators and the feasibility of the testing methods were verified.Furthermore,the uncertainty evaluation method for calibration results was provided based on an analysis of the factors affecting the calibration process.This study lays the groundwork for the development of relevant technical standards and ensures the accuracy and validity of calibration data for these instruments.

关 键 词：计量学 重量法 颗粒物自动监测仪 校准 不确定度 质量浓度 

分 类 号：TB99[一般工业技术—计量学]