干旱区生态环境知识资源中心(Arid): Natural radioactivity of surface sediments by source regions of the asian dust

Arid

	Natural radioactivity of surface sediments by source regions of the asian dust
	Lee, Kil Yong; Yoon, Yoon Yeol; Cho, Soo Young; Koh, Kyung Seok; Kim, Yongje
通讯作者	Lee, KY
来源期刊	ANALYTICAL SCIENCE AND TECHNOLOGY
ISSN	1225-0163
EISSN	2288-8985
出版年	2008
卷号	21 期号:6 页码:474-479
英文摘要	Radioactivity of naturally occurring radioactive nuclides (NORN) such as Ra-226, Ac-228 and K-40 were investigated for surface sediments collected from Ordos, Alashan, Taklimakan deserts and Loess plateau regions in China. By a Gamma-ray spectrometry, specific activity (SA) and SA ratio (SAR) of the NORN were determined for each source region of Asian dust. Characterization of the source regions of Asian dust was performed with the SA and SAR values. SA of Ra-226 in the three desert regions have almost same values in the range of mean value 17.9 similar to 21.9 Bq/kg, however, the SA in Loess Plateau has much higher values in the mean value of 35 Bq/Kg. SA of Ac-228 in the Ordos and Alashan desert regions have almost same values in the range of mean value 27.1 similar to 27.2 Bq/kg, and those in Taklimakan desert and Loess Plateau were 31.7 and 49.0 Bq/kg, respectively. In case of 40 K, the SA in all regions have similar values in the range of 636 similar to 943 Bq/kg. The mean SAR value of (226) Ra/Ac-228 in four source regions was almost same in the range of 0.708-0.721. It is shown that relationship between Ra-226 and 228 Ac is clearly presented in the source regions. The mean SAR values of Ra-226/(40) K, Ac-228/K-40 are 0.0209-0.056, 0.0287-0.0773, respectively.
英文关键词	China desert Asian dust surface sediment natural radioactivity gamma-ray spectrometry
类型	Article
语种	其他
收录类别	ESCI
WOS记录号	WOS:000422551700003
WOS类目	Chemistry, Analytical
WOS研究方向	Chemistry
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/329126
作者单位	[Lee, Kil Yong; Yoon, Yoon Yeol; Cho, Soo Young; Koh, Kyung Seok; Kim, Yongje] Korea Inst Geosci & Mineral Resources, Geol Environm Div, 92 Gwahang No, Daejeon 305350, South Korea
推荐引用方式 GB/T 7714	Lee, Kil Yong,Yoon, Yoon Yeol,Cho, Soo Young,et al. Natural radioactivity of surface sediments by source regions of the asian dust[J],2008,21(6):474-479.
APA	Lee, Kil Yong,Yoon, Yoon Yeol,Cho, Soo Young,Koh, Kyung Seok,&Kim, Yongje.(2008).Natural radioactivity of surface sediments by source regions of the asian dust.ANALYTICAL SCIENCE AND TECHNOLOGY,21(6),474-479.
MLA	Lee, Kil Yong,et al."Natural radioactivity of surface sediments by source regions of the asian dust".ANALYTICAL SCIENCE AND TECHNOLOGY 21.6(2008):474-479.