南京地区相对湿度对气溶胶含量的影响

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Abstract

In order to study the effect of humidity on the aerosol in Nanjing, the influence of the humidity profile on the extinction coefficient was studied and analyzed by using the Raman-Rayleigh-Mie Lidar in Nanjing University of Information Science and Technology; Based on the environmental monitoring data from March 2014 to February 2015, the concentration characteristics of respirable particulate matter were statistically analyzed and compared with the corresponding humidity to contrast monthly and four-season comparative analysis, and then the correlation coefficient between the parameters was calculated with the view of the city layout and planning of Nanjing and to provide more air pollution control reference. It was showed that the extinction coefficient profile was consistent with the trend of relative humidity profile at low altitude. In the range where gravity sedimentation did not occur, the greater the relative humidity, the more favorable the formation of particulate matter, beyond this range, the greater the relative humidity, the lower the concentration of particulate matter. The limit is between 40% and 49% for PM₁₀and between 50% and 59% for PM_2.5 in Nanjing.

Key words： aerosol inhalable particles humidity extinction coefficient

Received: 02 March 2018

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	Articles by authors
	SONG Xiu-yu
	CAO Nian-wen
	ZHAO Cheng
	YANG Si-peng

Cite this article:

SONG Xiu-yu,CAO Nian-wen,ZHAO Cheng等. Effect of relative humidity on aerosol content in Nanjing[J]. CHINA ENVIRONMENTAL SCIENCECE, 2018, 38(9): 3240-3246.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2018/V38/I9/3240

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