1986年4月26日,苏联切尔诺贝利核电站发生反应堆堆芯熔化事故,将大量放射性物质释放到大气中。我们用高压电离室在我院连续测量近地面空气中照射量率,并从5月1日开始,采集并收集了我院工作区和生活区、北京密云水库和通县、沈阳、包头、甘肃、浙江秦山、乌鲁木齐等地区的空气、沉降灰、雨水、水库恕植物、土壤等样品, On April 26, 1986, a reactor core melting accident occurred at the Chernobyl nuclear power plant in the Soviet Union, releasing a large amount of radioactive material into the atmosphere. We used the high-pressure ionization chamber to continuously measure the radiation dose in the near-surface air in our hospital. From May 1, we collected and collected the working and living areas in our hospital, Beijing Miyun Reservoir and Tongxian, Shenyang, Baotou, Gansu , Zhejiang Qinshan, Urumqi and other regions of the air, sedimentation ash, rainwater, reservoirs, plants and soil samples,