深圳市大气气溶胶中<sup>210</sup>Po的比活度及其辐照剂量

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Abstract

The activity concentration of ²¹⁰Po in atmospheric aerosol of Shenzhen and its committed effective dose through inhalation were studied. The activity concentrations of ²¹⁰Po in total suspended particle (TSP) and PM_2.5 were in the range of 0.01~0.20mBq/m³ (with an average of 0.08mBq/m³) and 0.03~0.38mBq/m³ (with an average of 0.12mBq/m³), respectively. The activity concentration of ²¹⁰Po showed significant positive correlation with the atmospheric concentration of PM_2.5, whereas it showed poor relationship with the amount of rainfall.It is suggested that the atmosphericparticle was the key factor that control the activity concentration of ²¹⁰Po in the air. The calculated average annual committed effective dose of ²¹⁰Po through inhalation was 4.53×10^-6Sv.

Key words： atmospheric aerosol ²¹⁰Po committed effective dose Shenzhen

Received: 29 October 2016

PACS:	X513
	X837

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	Articles by authors
	SU Ling-ling
	LIU Guo-qing
	DING Min-xia
	FENG Jiang-ping
	ZHANG Hong

Cite this article:

SU Ling-ling,LIU Guo-qing,DING Min-xia等. A study of ²¹⁰Po in atmospheric aerosol of Shenzhen and its committed effective dose[J]. CHINA ENVIRONMENTAL SCIENCECE, 2017, 37(6): 2025-2028.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2017/V37/I6/2025

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