低成本大气颗粒物传感器的室外环境性能评测研究

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Abstract In this paper, three types of sensors based on the light scattering method used in atmospheric environmental particulate matter monitoring are evaluated and researched, of which A and B are used for indoor environmental monitoring, and C is used for outdoor environmental monitoring. The three types of particulate matter sensors are compared with the standard instrument MATONE BAM-1020based on the β-ray method, and the variability of the sensor, the time series, the linear correlation between the sensor and the standard instrument, the influence of other factors, and the data quality are analyzed. The results show that there is a strong correlation between the various types of particulate matter sensors (R² has reached 0.95 or more); the measurement results of the three particulate matter sensors and the standard instrument have a high degree of agreement, and R² is 0.58, 0.80, 0.61, respectively, and during the entire test period, the sensor overestimated PM_2.5 relative to the standard instrument; high relative humidity (RH>50%) and PM_2.5/PM₁₀ (ratio) will affect the sensor. The average absolute error (MAE) of the PM_2.5 data of the three types of sensors of A, B, and C are 23.31, 10.14, 28.17μg/m³ respectively; the normalized root mean square error (RMSE) is 25.80, 14.01, 32.98μg/m³; the accuracy (A%) is 51.39%, 72.97%, 46.51%, respectively.

Key words： air pollution environmental monitoring particulate matte low cost sensors PM_2.5

Received: 09 May 2020

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X513

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	Articles by authors
	GUO Ying-zhe
	GAO Jian
	WANG Wen-xing
	QIN Xiao-liang
	REN Jian-ning
	NI Deng-feng

Cite this article:

GUO Ying-zhe,GAO Jian,WANG Wen-xing等. Research on outdoor environmental performance evaluation of low-cost atmospheric particulate sensors[J]. CHINA ENVIRONMENTAL SCIENCECE, 2020, 40(12): 5133-5141.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2020/V40/I12/5133

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