Zhang Guocheng1， Sheng Jingyi2， Li Li3， Zhang Qi1， Hua Fang3
1.Beijing Institute of Product Quality Supervision and Inspection， Beijing 101300， China； 2.School of Biological Science and Medical Engineering， Southeast University， Nanjing 210009， China； 3.Hefei Haian Hongmeng Reference Materials Technology Research Institute， Hefei 230092， China
Abstract
Significance Currently， numerous studies in China have focused on the structural design， optimization of measurement devices， and detection methods for dust monitors based on different principles. However， a systematic review and summary covering all categories of instruments， all types of calibration devices， all technical pathways， and domestic and international standard systems is still lacking. Based on this， this paper systematically summarizes the classification system and core measurement characteristics of dust monitors， the technical system of aerosol generation and calibration devices， the evolutionary pathway of measurement traceability technology， and the progress of standardization at home and abroad. It can provide a systematic theoretical reference for improving the measurement quality control system and revising industry standards for dust monitors in China.
Progress First， a classification system for dust monitors is established based on application scenarios and detection principles， and the metrological levels， accuracy， and working condition adaptability of dust monitors based on different principles are then compared and analyzed. Second， focusing on aerosol calibration facilities， the principles of aerosol generation technologies—including atomization， Wright scraping method， and fluidized bed method—are summarized. The structural characteristics and applicable ranges of four types of calibration devices （tandem pipeline， static chamber， horizontal wind tunnel， and simulated complex working conditions） are elaborated， with emphasis on the evaluation methods and key influencing factors of uniformity and stability. On this basis， the three-generation evolutionary logic of dust monitor metrology in China is summarized， progressing from filter weighing comparison， through reference instrument comparison， to direct traceability via controllable aerosols. The core bottlenecks are identified， including insufficient coverage of current general regulations， multi-parameter coupling interference in light scattering methods， and the lack of in situ field calibration.
Conclusions and Prospects Over the past two decades， China’s dust measurement technology has evolved from an initial stage， gradually establishing a calibration hardware system covering major detection principles， a multi-tiered metrological regulation and industry standard framework， and forming a distinctive dust and aerosol measurement technology system adapted to complex domestic working conditions and multi-scenario monitoring requirements. This system has comprehensively supported regulatory efforts in atmospheric environmental monitoring， occupational health in mining and industry， and industrial safety management. Currently， there are still several issues in the development of the dust measurement industry. 1） The evaluation methods for particle size identification error require further improvement， and the precise classification and measurement capabilities of light scattering sensors remain insufficient. 2） Low-cost micro dust sensors are numerous and widely used， but there is a lack of corresponding measurement supervision standards. 3） There is a significant discrepancy between laboratory calibration conditions and complex on-site conditions， leading to inconsistencies between calibration data and actual monitoring data. 4） Mature in-situ and portable on-site calibration techniques are lacking， making on-site traceability difficult. 5） National or industry standards for instruments of various scenarios and principles are scarce， which is detrimental to the construction of “one list and one database” framework. The continuous improvement of the dust measurement system can effectively enhance the accuracy， traceability， and consistency of dust particulate matter monitoring data， providing highly credible data support for fields such as ecological environment， occupational health， and industrial production. This will further promote the standardized， intelligent， and international development of dust measurement field in China.
Keywords： aerosol； dust concentration monitors； metrology； calibration facility； technical specification
Get Citation:Zhang Guocheng， Sheng Jingyi， Li Li， et al. Research progress on metrology of dust monitors［J］. China Powder Science and Technology， 2027， 33（1）： 1-12.
Received：2026-07-10， Revised： 2026-08-05，Online： 2026-08-31。
Funding： The research was supported by the National Natural Science Foundation of China (Grant No. 32301189).
CLC No.:TB4； TQ324.8
Type Code:A
Serial No.:1008-5548（2027）01-0001-12
