青岛市~7Be,^(210)Pb和^(210)Po大气沉降通量的测定

Measurements of atmospheric deposition fluxes of ~7Be,^(210)Pb and ^(210)Po

运用本实验室建立的大气沉降中7Be,210Pb的γ谱分析方法和210Po的α谱分析方法,测定了青岛大气沉降通量。结果表明,青岛市2002年4~11月大气沉降的7Be和210Pb通量平均为1.67和0.32 Bq/(m2.d);2004年5~9月7Be,210Pb和210Po通量平均值为2.15,0.51和0.083 Bq/(m2.d)。

The measurement methods of atmospheric deposition fluxes of 7 ^Be,210^ Pb and 210^Po have been developed, 7^Be and 210^Pb are measured by γ spectroscopy, and 210^Po is determined using a spectroscopy. The formulas from the activities of measuring time to deposition spectroscopy have been deduced. The formulas from the activities of measuring time to deposition fluxes have been deduced, too. The atmospheric deposition fluxes of 7^Be, 210^Pb and 210^Po at Qingdao have been studies. The result shows that the average fluxes of 7^Be, 210^Pb are 1.67 and 0. 32 Bq/（m^2 · d） respectively during April to November 2002 and average fluxes of 7^Be, 210^Pb and 210^Po are 2.15, 0.51 and 0. 083 Bq/（m^2· d） during May to September 2004.