摩纳哥地表空气中 7Be、137Cs 和 210Pb 活度浓度的时间变化及其与气象参数的相关性。
Temporal changes of 7Be, 137Cs and 210Pb activity concentrations in surface air at Monaco and their correlation with meteorological parameters.
机构信息
Environment Laboratories, International Atomic Energy Agency, MC 98000, Monaco.
出版信息
J Environ Radioact. 2011 Nov;102(11):1045-54. doi: 10.1016/j.jenvrad.2011.06.002. Epub 2011 Jun 29.
Results of analysis of (7)Be, (137)Cs and (210)Pb on aerosol filters carried out from 1998 to 2010 in Monaco show that a weak correlation between activity concentrations of these radionuclides in the atmosphere and meteorological parameters has been found for (7)Be and temperature (r = 0.50), (210)Pb and temperature and humidity (r = 0.43 and 0.41, respectively), and (137)Cs and precipitation (r = 0.51). The minimum and maximum (7)Be activity concentrations were observed during 2000 and 2009, corresponding with the maximum and minimum solar activity, respectively. The maximum (137)Cs activity concentration found in May-June 1998 was due to the accident at Algeciras in Spain. The deposition velocities of (7)Be, (137)Cs and (210)Pb depended on the precipitation rate, and attained maximum values during dry seasons. The investigated radionuclides may be used as atmospheric tracers, especially in long-term periods.
对 1998 年至 2010 年期间在摩纳哥采集的气溶胶滤膜上的（7）Be、（137）Cs 和（210）Pb 进行分析的结果表明，这些放射性核素在大气中的活度浓度与气象参数之间存在弱相关性，（7）Be 与温度（r = 0.50）、（210）Pb 与温度和湿度（r = 0.43 和 0.41）呈正相关，（137）Cs 与降水（r = 0.51）呈正相关。（7）Be 的最小和最大活度浓度出现在 2000 年和 2009 年，分别对应太阳活动的最大值和最小值。1998 年 5 月至 6 月发现的（137）Cs 最大活度浓度是由于西班牙阿尔赫西拉斯的事故造成的。（7）Be、（137）Cs 和（210）Pb 的沉积速度取决于降水率，并在旱季达到最大值。研究的放射性核素可用作大气示踪剂，特别是在长期时期。
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