干旱区生态环境知识资源中心(Arid): Radon exhalation from temperature treated loess

Arid

DOI	10.1016/j.scitotenv.2022.154925
	Radon exhalation from temperature treated loess
	Li, Pengfei; Sun, Qiang; Geng, Jishi; Yan, Xusheng; Tang, Liyun
通讯作者	Sun, Q
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
EISSN	1879-1026
出版年	2022
卷号	832
英文摘要	Radon gas is a cancer risk and exists naturally in certain soils, such as loess, which is an important raw earth construction material in arid regions such as northwestern China and southern USA. Accordingly, the radon exhalationed from building materials is of increasing concern; however, there is little research on radon exhalation from loess. In this study, the pore structure and radon exhalation characteristics of heat-treated loess were investigated by nitrogen ad-sorption tests, swept surface electron microscopy, and radon measurements. The rate of radon exhalation increases linearly with temperature until 400 degrees C and then decreases exponentially. Changes in the internal pore structure (pore type, surface morphology, and specific surface area) of loess are strongly correlated with the radon exhalation rate. The volume of micropores (< 2 nm diameter) is an important influence on radon exhalation ability, which is closely related to the fractal dimension of the micropore structure after heating. The results provide guidance for predicting the radiation risk posed by radon diffusing from loess.
英文关键词	Loess High temperature Nitrogen adsorption SEM Pore structure Radon exhalation
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000793407400009
WOS关键词	BUILDING-MATERIALS ; THERMAL-EXPANSION ; DEPENDENCE ; EMANATION ; ROCK ; SOIL ; COEFFICIENT ; DIFFUSION ; EXPOSURE
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/2XILL650/394373
推荐引用方式 GB/T 7714	Li, Pengfei,Sun, Qiang,Geng, Jishi,et al. Radon exhalation from temperature treated loess[J],2022,832.
APA	Li, Pengfei,Sun, Qiang,Geng, Jishi,Yan, Xusheng,&Tang, Liyun.(2022).Radon exhalation from temperature treated loess.SCIENCE OF THE TOTAL ENVIRONMENT,832.
MLA	Li, Pengfei,et al."Radon exhalation from temperature treated loess".SCIENCE OF THE TOTAL ENVIRONMENT 832(2022).