Research on the Calibration Method of PM<sub>2.5</sub>/PM<sub>10</sub> Particle Automatic Monitoring Instruments Based on Gravimetric Method

ZHANG Wenge; LIU Wei; ZHAO Liang; CHEN Jinchang; ZHOU Huanhuan

doi:10.12338/j.issn.2096-9015.2024.0179

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ZHANG Wenge, LIU Wei, ZHAO Liang, CHEN Jinchang, ZHOU Huanhuan. Research on the Calibration Method of PM2.5/PM10 Particle Automatic Monitoring Instruments Based on Gravimetric Method[J]. Metrology Science and Technology. doi: 10.12338/j.issn.2096-9015.2024.0179

Citation:

ZHANG Wenge, LIU Wei, ZHAO Liang, CHEN Jinchang, ZHOU Huanhuan. Research on the Calibration Method of PM_2.5/PM₁₀ Particle Automatic Monitoring Instruments Based on Gravimetric Method[J]. Metrology Science and Technology. doi: 10.12338/j.issn.2096-9015.2024.0179

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Research on the Calibration Method of PM_2.5/PM₁₀ Particle Automatic Monitoring Instruments Based on Gravimetric Method

doi: 10.12338/j.issn.2096-9015.2024.0179

1.
National Institute of Metrology, Beijing 100029, China
2.
Qingdao Institute of Measurement Technology, Qingdao 266101, China
3.
Dalian Institute of Measurement and Testing, Dalian 116032, China
4.
China Jiliang University, Hangzhou 310018, China

Received Date: 2024-05-31
Accepted Date: 2024-07-11
Rev Recd Date: 2024-07-17

Available Online: 2024-08-29

Abstract

Abstract

To ensure the accuracy and reliability of PM_2.5/PM₁₀ monitoring data, this study investigates the traceability method for automatic PM_2.5/PM₁₀ 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.
- metrology,
- gravimetric method,
- particle automatic monitoring instruments,
- calibration,
- uncertainty,
- mass concentration

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References(31)

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