福岛核事故期间北京某菜园露天菠菜和土壤的放射性水平监测  

Monitoring of the vegetable garden open air spinach and soil radioactivity in Beijing during the Japan Fukushima nuclear accident

作　　者：周强[1] 徐翠华[1] 拓飞[1] 张京[1] 李文红[1] 张庆[1] 张伟军[1] 张建峰[1] 苏旭[1] 

机构地区：[1]中国疾病预防控制中心辐射防护与核安全医学所辐射防护与核应急中国疾病预防控制中心重点实验室,北京100088

出　　处：《中华放射医学与防护杂志》2012年第6期635-637,共3页Chinese Journal of Radiological Medicine and Protection

摘　　要：目的检测日本福岛核事故期间北京某菜园露天菠菜及菜园土壤中人工放射性核素的含量，研究其放射性污染特点。方法连续采集该菜园的露天菠菜样品6份，土壤样品3份，采用高纯锗（HPGe）1能谱仪分析样品中131I等人工放射性核素的活度浓度。结果在6份露天菠菜样品中均检测到131I，在3份土壤样品中均检测到137Cs，仅有1份无菠菜遮挡的表层土壤样品中检测出微量的131I。结论福岛核事故后，北京的露天菠菜受到人工放射性核素131I的污染，污染的峰值出现在2011年4月4日前后，但其污染较轻，不会对人体健康造成危害。Objective To detect artificial radionuclide content in the spinach and soil in open air vegetable garden in Beijing during Fukushima nuclear accident and to study the radioactive contamination characteristics of the samples. Methods 6 spinach samples and 3 soil samples in open air vegetable garden were obtained through continuously sampling. High-purity germanium （HPGe） γ spectrometry was used to analyze activity concentrations of artificial radionuclide 131I etc in these samples. Results Artificial radionuclide 131I was detected in the 6 open air spinach samples. Artificial radionuclide 137 Cs was detected in 3 vegetable garden soil samples, trace amount of 13lI was detected in 1 open-air surface soil sample alone. Conclusions Following the Fukushima nuclear accident, spinach in Beijing＇s open-air vegetable garden was slightly polluted by artificial radionuclide 131I, with the highest values of pollution appeared around April 4, 2011, but it could not cause harm to human health.

关 键 词：福岛核事故 菠菜 131I Γ能谱 

分 类 号：S124[农业科学—农业基础科学]