Modeling of 210Pb and 210Po radionuclide emissions from local power plants in central Poland,Environmental Science: Processes & Impacts

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Modeling of 210Pb and 210Po radionuclide emissions from local power plants in central Poland
Environmental Science: Processes & Impacts ( IF 4.3 ) Pub Date : 2020-10-14 , DOI: 10.1039/d0em00141d
Magdalena Długosz-Lisiecka _{1,

2,

3,

4,

5} , Damian Perka _{1,

2,

3,

4,

5}

Affiliation

Due to the more volatile nature of ²¹⁰Po in relation to ²¹⁰Pb, an imbalance of activity concentrations in high temperature combustion processes can be observed, especially in fine particulates (diameter < 0.1, 0.2 and 0.5 μm). In the atmosphere and in the soil around coal-fired power plants, ²¹⁰Pb and ²¹⁰Po concentrations are a combination of activities from natural and anthropogenic sources. In this study only portions of ²¹⁰Po and ²¹⁰Pb radionuclides resulting from energy production activities were analyzed. Due to the high mobility of fine particles, a surface area of 172 km × 140 km in central Poland was chosen for simulation. For validation of the modeling approach, three grid versions were applied: 1 km, 2 km and 4 km. Simulated results confirmed experimental–computational values of an excess of both radionuclides in the atmosphere in 2017 in the city of Lodz. Different aerosol fractions, seasons and various grids in the selected area were subjected to 36 individual simulations. The ²¹⁰Po activity concentrations measured in winter and summer 2017 were 42.5 and 8.99 μBq m⁻³, respectively. Simulated and measured values of artificial ²¹⁰Po and ²¹⁰Pb activities are well correlated.

中文翻译：

波兰中部地方发电厂的210Pb和210Po放射性核素排放模型

由于²¹⁰ Po相对于²¹⁰ Pb具有更高的挥发性，因此可以观察到高温燃烧过程中活性浓度的不平衡，特别是在细颗粒（直径<0.1、0.2和0.5μm）中。在燃煤电厂周围的大气和土壤中，²¹⁰ Pb和²¹⁰ Po的浓度是自然和人为来源的活动的结合。在这项研究中，只有²¹⁰ Po和^{210的一部分}分析了能源生产活动中产生的铅放射性核素。由于细颗粒的高迁移率，因此在波兰中部选择了172 km×140 km的表面积进行模拟。为了验证建模方法，应用了三种网格版本：1 km，2 km和4 km。模拟结果证实了罗兹市2017年大气中两种放射性核素过量的实验计算值。对所选区域中的不同气溶胶分数，季节和各种网格进行了36个单独的模拟。2017年冬季和夏季测得的²¹⁰ Po活性浓度分别为42.5和8.99μBqm ^-3。人工²¹⁰ Po和^210的模拟和测量值铅的活动有很好的相关性。

更新日期：2020-11-03

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