[논문]The Correlation between Radon (Rn222) and Particulate Matters (PM10, PM2.5, PM1.0) in Subway Tunnel in Seoul.

Versoza, Michael; Park, Duckshin

doi:10.11629/jpaar.2017.6.30.087

The Correlation between Radon (Rn222) and Particulate Matters (PM10, PM2.5, PM1.0) in Subway Tunnel in Seoul. 원문보기

Particle and aerosol research = 한국입자에어로졸학회지, v.13 no.2, 2017년, pp.87 - 95

Versoza, Michael (Transportation Environmental Research Team, Korea Railroad Research Institute) , Park, Duckshin (Transportation Environmental Research Team, Korea Railroad Research Institute)

Abstract ▼ AI-Helper

Radon ($Rn^{222}$) is a radioactive gas and is found at high concentrations underground. Investigations were done in many years specifically on public transportations such as in the subway stations, concourses and platforms for these are located underground areas. This study correlates the $Rn^{222}$ concentrations with the Particulate Matter (PM) concentration for the gas could be attached or trapped inside these particles. It was done on the opening subway tunnel of Miasageori Station going to Mia Station (Line 4) last August 2016. Based on the result, the $Rn^{222}$ were more influenced on the mass ratio (%) of PM present in the air instead of its mass concentration (${\mu}g/m^3$). As the $PM_{10}$ mass ratio increases ($42.32{\pm}1.03%$) during morning rush-hours, radon starts to increase up to $0.97{\pm}0.03pCi/L$. But during the afternoon $Rn^{222}$ concentrations decreased while the composition were stable at $22.96{\pm}3.0%$, $39.04{\pm}0.6%$ and $38.01{\pm}0.3%$ in $PM_1$, $PM_{2.5}$ and $PM_{10}$ respectively. It was then assumed that it could be the composition of the morning hours of the station were influencing the concentration of the radon.

주제어

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문제 정의

The main purpose of the study was to investigate if ²²²Radon could be influence on air pollutants such as particulate matter. The best way was to compare its specific time periods were phenomenon such as increasing concentrations of both radon and PM were considered.
The purpose of this study is to assess the concentration of Rn²²² in an underground subway tunnel and correlated with particulate mass ratio. This experiment would like to determine if the particulate matter could trap and carry Rn²²² gas inside the subway tunnel in Seoul.

제안 방법

The intended investigatory time was the maximum of four days due to administration restrictions but the RadonFTLab were prolonged to one week due to power interruptions in the station itself.After collection of Rn²²² and PM 24 hour data collection, these were converted to hourly and daily average to determine its measurement on specific time. Furthermore mass ratio of particulate matter (PM_1.

대상 데이터

The study was conducted on the opening subway tunnel of Miasageori Station going to Mia Station (all stations are in Line 4) last August 2016. The station is a side platform type where two opposing tracks are in the center while the platforms are in each side link with station’s concourse (Figure 1).
To determine the concentrations of Rn²²² a monitoring device was used (FRD1600, RadonFTLab). This monitor could be easily placed anywhere, had a forced air fan or internal pump and could detect from 0.

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