云南省某三个地区气溶胶中γ核素放射性水平调查

Investigation on the Radioactivity Level of γ-Nuclides in Aerosols in Certain Areas of Yunnan Province

通过气溶胶中γ核素放射性含量了解云南省某三个地区的空气中放射性水平高低以及变化情况。分析结果显示:Pb-210和Be-7能够检出,且均在正常范围内波动,其余核素均为未检出。通过1a的监测,这三个地区的气溶胶中γ核素放射性水平均在正常范围内波动,且波动情况受季节和降水影响。

The level and change of radioactivity in the air of three areas in Yunnan Province were determined by the content of radionuclide in aerosol.The aerosol was collected using a very large flow sampler and compressed and sealed for 20 days,and then analyzed by high purity germanium gamma spectrometer.The results showed that 210Pb and 7Be could be detected and fluctuated in the normal range.Other nuclides were not detected.Through a year-long monitoring,the radioactivity level of γnuclide in aerosols in these three areas fluctuated in a normal range,and the fluctuation was affected by seasons and precipitation.