Malczewski Dariusz, Zaba Jerzy
Faculty of Earth Sciences, University of Silesia, Bedzińska 60, 41-200 Sosnowiec, Silesia, Poland.
J Environ Radioact. 2007;92(3):144-64. doi: 10.1016/j.jenvrad.2006.11.001. Epub 2006 Dec 27.
Soil gas 222Rn and 220Rn concentrations were measured at 18 locations in the Karkonosze-Izera Block area in southwestern Poland. Measurements were carried out in surface air and at sampling depths of 10, 40 and 80 cm. Surface air 222Rn concentrations ranged from 4 to 2160 Bq m(-3) and 220Rn ranged from 4 to 228 Bq m(-3). The concentrations for 10 and 40 cm varied from 142 Bq m(-3) to 801 kBq m(-3) and 102 Bq m(-3) to 64 kBq m(-3) for 222Rn and 220Rn, respectively. At 80 cm 222Rn concentrations ranged from 94 Bq m(-3) to >1 MBq m(-3). The 220Rn concentrations at 80 cm varied from 45 Bq m(-3) to 48 kBq m(-3). The concentration versus depth profiles for 222Rn differed for soils developed on fault zones, uranium deposits or both. Atmospheric air temperature and soil gas 222Rn and 220Rn were negatively correlated. At sampling sites with steep slopes, 220Rn concentrations decreased with depth.
在波兰西南部的卡尔科诺谢-伊泽拉地块区域的18个地点测量了土壤气体中222Rn和220Rn的浓度。测量在地表空气以及10厘米、40厘米和80厘米的采样深度进行。地表空气中222Rn浓度范围为4至2160 Bq m(-3)，220Rn浓度范围为4至228 Bq m(-3)。对于222Rn和220Rn，10厘米和40厘米深度处的浓度分别在142 Bq m(-3)至801 kBq m(-3)以及102 Bq m(-3)至64 kBq m(-3)之间变化。在80厘米深度处，222Rn浓度范围为94 Bq m(-3)至>1 MBq m(-3)。80厘米深度处220Rn浓度在45 Bq m(-3)至48 kBq m(-3)之间变化。222Rn的浓度与深度关系曲线在断层带、铀矿床或两者之上发育的土壤中有所不同。大气气温与土壤气体中的222Rn和220Rn呈负相关。在陡坡的采样点，220Rn浓度随深度降低。
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