碳质气溶胶(OC/EC)新型观测方法对比分析

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Abstract Based on two protocol analysis methods, Thermo-light reflection method (IMPROVE A) and Thermo-optical transmission method (RT-Quartz), and the new OC/EC analysis method, comparative analysis of carbonaceous aerosol content in Jinan was held in this study. The results show that the protocol methods may lead to overestimation or underestimation of the carbonaceous aerosol mass concentration due to the analysis definition during OC/EC observation process, furthermore, the membrane sampling system made the offline OC about 1.65times online. Compared with the two protocol methods, the new OC/EC measurement method does eliminate the errors that may be caused by principle and environmental parameters (such as VOCs), and has certain advantages in the measurement of OC/EC/TC. With more accuracy, stability and practicality in practical operation, the new method will be more suitable for long-term commercial online measurement of OC/EC in particles.

Key words： PM_2.5 carbonaceous aerosol thermal-optical methods CASS comparative analysis

Received: 20 April 2020

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X513

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	Articles by authors
	NI Deng-feng
	LIN Jing-jing
	GAO Jian
	XIE Jing-fang
	WANG Jie
	GUO Ying-zhe
	REN Jian-ning

Cite this article:

NI Deng-feng,LIN Jing-jing,GAO Jian等. Comparative analysis of new observation methods for carbonaceous aerosol (OC/EC)[J]. CHINA ENVIRONMENTAL SCIENCECE, 2020, 40(12): 5191-5197.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2020/V40/I12/5191

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