Depositional characteristics of 7Be and 210Pb in Kuwaiti dust

被引：29

作者：

Aba, A. ^{[1
]}

Al-Dousari, A. M. ^{[2
]}

Ismaeel, A. ^{[1
]}

机构：

[1] Kuwait Inst Sci Res, Energy & Bldg Res Ctr, POB 24885, Safat 13109, Kuwait

[2] Kuwait Inst Sci Res, Environm & Life Sci Res Ctr, POB 24885, Safat 13109, Kuwait

来源：

JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY | 2016年 / 307卷 / 01期

关键词：

Dust fallout; Temporal variations; Arid areas; Dry deposition; ATMOSPHERIC DEPOSITION; RESIDENCE TIME; AIR; FLUXES; BERYLLIUM-7; AEROSOL; FALLOUT; PO-210; EXCHANGE; ALTITUDE;

D O I：

10.1007/s10967-015-4129-y

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Dust fallout fluxes of Pb-210 and Be-7 were measured in Kuwait during October 2009-August 2011. The annual average depositional fluxes of Pb-210 and Be-7 were 134 and 422 Bq m(-2), respectively. The temporal variations of both radionuclides showed a maximum deposition during April of 2010 and 2011. A strong linear relationship between Be-7 and Pb-210 was found. The average dust depositional rate was about 50 mg m(-2) h(-1) with a maximum of 460 mg m(-2) h(-1), while the extreme value of 664 mg m(-2) h(-1) was recorded in March 2011 when a massive dust storm hit Kuwait. The Pb-210 deposition has a strong correlation with dust deposition because of its terrestrial abundance. Whereas the Be-7 a radionuclide shows a weaker correlation with dust deposition.

引用

页码：15 / 23

页数：9

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