Table 4 Radon activity concentrations from different water sources.
From: Identifying indoor radon sources in Pa Miang, Chiang Mai, Thailand
Water type | Radon concentration (Bq L−1) | Country, region | Geology/source | References |
|---|---|---|---|---|
Drinking water | 1.46–644 | Austria | Granite bedrock | Wallner and Steininger47 |
1.9–112.77 | Portugal | Tap | Lopes et al.48 | |
0.19–71.1 | UK | Tap | Henshaw et al.49 | |
Tap water | 1–2 | United Kingdom | Mustafa et al.50 | |
1.2–4.5 | Romania | A post-tectonic depression | Nita et al.51 | |
0.18–1.13 | Doi Saket, Chiang Mai, Thailand | Igneous and sedimentary rocks/ stream originated from mountain | This study | |
Groundwater and Well water | 3800 | Finland | Soil (no detail) | Salonen52 |
1220 | Germany, east Bavaria | Granite, gneiss | Trautmannsheimer et al.53 | |
17–3856 | Portugal, Nisa | Granites, sediments | Pereira et al.54 | |
4–63,560 | Sweden, Stockholm County | Various, crystalline bedrock | \(Skeppstr\ddot{O} m\) and Olofsson55 | |
77,000 | Finland | Mainly granitic bedrock | Salonen52 | |
0.1 to 483.0 | Namom district, Thailand | Triassic granite, Carboniferous shale, and Quaternary sediment | Pisapak and Bhongsuwan56 | |
5.6–35.2 | Romania | A post-tectonic depression | Nita et al.51 | |
11.38–84.20 | Doi Saket, Chiang Mai, Thailand | Igneous and sedimentary rocks | This study | |
Spring and non-bottled mineral waters | 1.4–105 | Spain, South Catalonia | Volcanic (granite) and sedimentary rocks (e.g. limestone, sandstone) | Fonollosa et al.57 |
2.11–120 | Hungary, Balaton Highland, South Transdanubia and the South Great Plain | Sedimentary rocks | Somlai et al.58 | |
1.4–43.7 | Lithuania | Crystalline and sediment rocks | Ladygiene et al.59 | |
1029 | Spain, Galicia | Granitic and slate rocks | Llerena et al.60 | |
10.2–68.9 | Romania | A post-tectonic depression | Nita et al.51 | |
13.29–60.91 | Doi Saket, Chiang Mai, Thailand | Springs (waterfall) originated from mountain | This study | |
Hot spring | 53.4–292.5 | China | Granite bedrocks | Song61 |
0.79–76.53 | Mae Hong Son, Chiang Mai, Chiang Rai and Lampang, Thailand | Igneous and sedimentary rocks | Wanapongse et al.62 | |
2–154 | Suan Phueng district, Ratchaburi province, Thailand | Igneous and sedimentary rocks | Sola et al.63 |
