Analysis of radon depth profile in soil air after a rainfall by using diffusion model

Seongjin Maeng; Seung Yeon Han; Sang Hoon Lee

doi:10.1016/j.net.2019.06.018

Analysis of radon depth profile in soil air after a rainfall by using diffusion model

Seongjin Maeng, Seung Yeon Han, Sang Hoon Lee

School of Energy Engineering

Kyungpook National University

Research output: Contribution to journal › Article › peer-review

14 Scopus citations

Abstract

The radon concentrations in soil air were measured before and after a rainfall. ²²⁶Ra concentration, porosity, moisture content and temperature in soil were measured at Kyungpook National University in Daegu. As the results of measurement and analysis, the arithmetic mean of measured ²²²Rn concentration increased from 12100 ± 500 Bq/m³ to 16200 ± 600 Bq/m³ after the rainfall. And the measured ²²⁶Ra concentration was 61.4 ± 5.7 Bq/kg and the measured porosity was 0.5 in soil. The estimated values of ²²⁶Ra concentration and porosity using diffusion model of ²²²Rn in soil were 60.3 Bq/kg and 0.509, respectively. The estimated values were similar to the measured values. ²²²Rn concentration in soil increased with depth and moisture content. The estimations were obtained through fitting based on the diffusion model of ²²²Rn using the measurement values. The measured depth profiles of ²²²Rn were similar to the calculated depth profiles of ²²²Rn in soil. We hope that the results of this study will be useful for environmental radiation analysis.

Original language	English
Pages (from-to)	2013-2017
Number of pages	5
Journal	Nuclear Engineering and Technology
Volume	51
Issue number	8
DOIs	https://doi.org/10.1016/j.net.2019.06.018
State	Published - Dec 2019

Keywords

Diffusion model
Radon
Rainfall
Soil

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10.1016/j.net.2019.06.018

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@article{e4156ff3aa404439b94f2de0d019c4e3,

title = "Analysis of radon depth profile in soil air after a rainfall by using diffusion model",

abstract = "The radon concentrations in soil air were measured before and after a rainfall. 226Ra concentration, porosity, moisture content and temperature in soil were measured at Kyungpook National University in Daegu. As the results of measurement and analysis, the arithmetic mean of measured 222Rn concentration increased from 12100 ± 500 Bq/m3 to 16200 ± 600 Bq/m3 after the rainfall. And the measured 226Ra concentration was 61.4 ± 5.7 Bq/kg and the measured porosity was 0.5 in soil. The estimated values of 226Ra concentration and porosity using diffusion model of 222Rn in soil were 60.3 Bq/kg and 0.509, respectively. The estimated values were similar to the measured values. 222Rn concentration in soil increased with depth and moisture content. The estimations were obtained through fitting based on the diffusion model of 222Rn using the measurement values. The measured depth profiles of 222Rn were similar to the calculated depth profiles of 222Rn in soil. We hope that the results of this study will be useful for environmental radiation analysis.",

keywords = "Diffusion model, Radon, Rainfall, Soil",

author = "Seongjin Maeng and Han, {Seung Yeon} and Lee, {Sang Hoon}",

note = "Publisher Copyright: {\textcopyright} 2019",

year = "2019",

month = dec,

doi = "10.1016/j.net.2019.06.018",

language = "English",

volume = "51",

pages = "2013--2017",

journal = "Nuclear Engineering and Technology",

issn = "1738-5733",

publisher = "Korean Nuclear Society",

number = "8",

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TY - JOUR

T1 - Analysis of radon depth profile in soil air after a rainfall by using diffusion model

AU - Maeng, Seongjin

AU - Han, Seung Yeon

AU - Lee, Sang Hoon

PY - 2019/12

Y1 - 2019/12

N2 - The radon concentrations in soil air were measured before and after a rainfall. 226Ra concentration, porosity, moisture content and temperature in soil were measured at Kyungpook National University in Daegu. As the results of measurement and analysis, the arithmetic mean of measured 222Rn concentration increased from 12100 ± 500 Bq/m3 to 16200 ± 600 Bq/m3 after the rainfall. And the measured 226Ra concentration was 61.4 ± 5.7 Bq/kg and the measured porosity was 0.5 in soil. The estimated values of 226Ra concentration and porosity using diffusion model of 222Rn in soil were 60.3 Bq/kg and 0.509, respectively. The estimated values were similar to the measured values. 222Rn concentration in soil increased with depth and moisture content. The estimations were obtained through fitting based on the diffusion model of 222Rn using the measurement values. The measured depth profiles of 222Rn were similar to the calculated depth profiles of 222Rn in soil. We hope that the results of this study will be useful for environmental radiation analysis.

AB - The radon concentrations in soil air were measured before and after a rainfall. 226Ra concentration, porosity, moisture content and temperature in soil were measured at Kyungpook National University in Daegu. As the results of measurement and analysis, the arithmetic mean of measured 222Rn concentration increased from 12100 ± 500 Bq/m3 to 16200 ± 600 Bq/m3 after the rainfall. And the measured 226Ra concentration was 61.4 ± 5.7 Bq/kg and the measured porosity was 0.5 in soil. The estimated values of 226Ra concentration and porosity using diffusion model of 222Rn in soil were 60.3 Bq/kg and 0.509, respectively. The estimated values were similar to the measured values. 222Rn concentration in soil increased with depth and moisture content. The estimations were obtained through fitting based on the diffusion model of 222Rn using the measurement values. The measured depth profiles of 222Rn were similar to the calculated depth profiles of 222Rn in soil. We hope that the results of this study will be useful for environmental radiation analysis.

KW - Diffusion model

KW - Radon

KW - Rainfall

KW - Soil

UR - http://www.scopus.com/inward/record.url?scp=85067887360&partnerID=8YFLogxK

U2 - 10.1016/j.net.2019.06.018

DO - 10.1016/j.net.2019.06.018

M3 - Article

AN - SCOPUS:85067887360

SN - 1738-5733

VL - 51

SP - 2013

EP - 2017

JO - Nuclear Engineering and Technology

JF - Nuclear Engineering and Technology

IS - 8

ER -

Analysis of radon depth profile in soil air after a rainfall by using diffusion model

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