斯洛文尼亚波斯托伊纳溶洞中包裹氡衰变产物的纳米气溶胶（10 - 1100纳米）浓度及粒径分布的日变化和季节变化
Diurnal and seasonal variations of concentration and size distribution of nano aerosols (10-1100 nm) enclosing radon decay products in the Postojna Cave, Slovenia.
作者信息
Bezek M, Gregoric A, Kávási N, Vaupotic J
机构信息
Department of Environmental Sciences, JoŽef Stefan Institute, Jamova cesta 39, 1000 Ljubljana, Slovenia.
出版信息
Radiat Prot Dosimetry. 2012 Nov;152(1-3):174-8. doi: 10.1093/rpd/ncs218. Epub 2012 Aug 23.
At the lowest point along the tourist route in the Postojna Cave, the activity concentration of radon ((222)Rn) short-lived decay products and number concentration and size distribution of background aerosol particles in the size range of 10-1100 nm were measured. In the warm yearly season, aerosol concentration was low (52 cm(-3)) with 21 % particles smaller than 50 nm, while in the cold season, it was higher (1238 cm(-3)) with 8 % of <50 nm particles. Radon activity concentrations were 4489 and 1108 Bq m(-3), and fractions of unattached radon decay products were 0.62 and 0.13, respectively.
在波斯托伊纳溶洞旅游路线的最低点，测量了氡（(222)Rn）短寿命衰变产物的活度浓度以及粒径范围在10 - 1100 nm的背景气溶胶粒子的数浓度和粒径分布。在温暖的年份季节，气溶胶浓度较低（52 cm⁻³），粒径小于50 nm的粒子占21%；而在寒冷季节，气溶胶浓度较高（1238 cm⁻³），粒径小于50 nm的粒子占8%。氡活度浓度分别为4489和1108 Bq m⁻³，未附着的氡衰变产物的比例分别为0.62和0.13。
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