干旱区生态环境知识资源中心(Arid): Atmospheric residence times and excess of unsupported Po-210 in aerosol samples from the Kuwait bay-northern gulf

Arid

DOI	10.1016/j.chemosphere.2020.127690
	Atmospheric residence times and excess of unsupported Po-210 in aerosol samples from the Kuwait bay-northern gulf
	Aba, A.; Ismaeel, A.; Al-Boloushi, O.; Al-Shammari, H.; Al-Boloushi, A.; Malak, Mariam
通讯作者	Aba, A
来源期刊	CHEMOSPHERE
ISSN	0045-6535
EISSN	1879-1298
出版年	2020
卷号	261
英文摘要	The concentration of cosmogenic radionuclide Be-7 and the naturally occurring radionuclide Rn-222 and its progenies Pb-210, (210)po, an Pb-214 were measured in the ground surface air in the urban area of the northern Arabian Gulf close to Kuwait Bay. A high-volume air sampler connected with a five-stage cascade impactor was used to collect approximately 1800 cubic meter weekly for a period of one year. The concentrations of Pb-210 and Po-210 varied from 0.35 to 1.65 mBq m(-3) and from 0.23 to 3.2 mBq m(-3), respectively; the Po-210/(210)pb activity ratio was close to one. The average concentration of Be-7 was 6.24 mBq m(-3), ranging from 3 to 10 mBq m(-3). The temporal variations of Pb-210, (210)po and Be-7 showed maximum concentrations of Po-210 and Be-7 in occurred summer months. The observed excess of Po-210 concentrations can be attributed to the local and long-range transport of suspended dust with Pb-210 and Po-210 in radioactive equilibrium state, oil industry emissions, local resuspended dust and the sea-saltaerosols from the Arabian Gulf. The range of the residence time estimation using the Rn-222/(210)pb and Pb-214/Pb-210 activity ratio methods ranged from three to five days. Moreover, the estimated residence time by the application of Be-7 from the activity median aerodynamic diameter method was 4.2 days. The method of using the Po-210/(210)pb activity ratio was invalid because of the excess Po-210 sources of anthropogenic origin. Therefore, extensive accurate diurnal measurements of Pb-214 and Rn-222 can be applied in hot arid regions for better aerosols residence time estimation. (C) 2020 Elsevier Ltd. All rights reserved.
英文关键词	Radioactive aerosols Pb-210 Be-7 Excess Po-210 Aerosols residence time
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000581030700033
WOS关键词	TROPOSPHERIC AEROSOLS ; SURFACE AIR ; URBAN ATMOSPHERE ; ACTIVITY RATIOS ; PB-210 ; BE-7 ; TRANSPORT ; BI-210 ; ASSOCIATION ; DESCENDANTS
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/327021
作者单位	[Aba, A.; Ismaeel, A.; Al-Boloushi, O.; Al-Shammari, H.; Al-Boloushi, A.; Malak, Mariam] Kuwait Inst Sci Res, Environm & Life Sci Res Ctr, POB 24885, Safat 13109, Kuwait
推荐引用方式 GB/T 7714	Aba, A.,Ismaeel, A.,Al-Boloushi, O.,et al. Atmospheric residence times and excess of unsupported Po-210 in aerosol samples from the Kuwait bay-northern gulf[J],2020,261.
APA	Aba, A.,Ismaeel, A.,Al-Boloushi, O.,Al-Shammari, H.,Al-Boloushi, A.,&Malak, Mariam.(2020).Atmospheric residence times and excess of unsupported Po-210 in aerosol samples from the Kuwait bay-northern gulf.CHEMOSPHERE,261.
MLA	Aba, A.,et al."Atmospheric residence times and excess of unsupported Po-210 in aerosol samples from the Kuwait bay-northern gulf".CHEMOSPHERE 261(2020).