摘要
本文报道1995—2006年我国部分地区的粮食、蔬菜、水果等主要陆生食用植物和部分指示植物样品中放射性核素水平的监测结果。监测结果表明:各植物样品中天然放射性核素238U2、32Th2、26Ra4、0K比活度均在正常范围内。大米、小麦和玉米3大种类主要粮食样品中90Sr平均比活度分别为0.17、0.33、0.36 Bq/kg(鲜),137Cs平均比活度分别为0.24、0.130、.08 Bq/kg(鲜);青菜、白菜和萝卜3类主要蔬菜样品中的90Sr平均比活度分别为0.18、0.10、0.17 Bq/kg(鲜),137Cs平均比活度分别为0.02、0.03、0.03 Bq/kg(鲜);苹果样品中90Sr平均比活度为0.05 Bq/kg(鲜),137Cs平均比活度为0.02 Bq/kg(鲜);海洋植物马尾藻样品中90Sr平均比活度为0.08 Bq/kg(鲜),137Cs平均比活度为0.06 Bq/kg(鲜);指示植物松针样品中90Sr平均比活度为4.29 Bq/kg(鲜),137Cs平均比活度为0.08 Bq/kg(鲜)。此外,还报道了茄子、柿子、山楂、荔枝、牧草和茶叶等样品中放射性核素水平的监测结果。
The monitoring results of radionuclides in foodstuff,vegetables and fruits in several areas are presented during 1995-2006.The result indicated that the specific activities of 238U,232Th,226Ra,40K are all in the normal range.The average specific activity of 90Sr is 0.17,0.33 and 0.36 Bq/kg(fresh) in rice,wheat and corn;0.18.0.10 and 0.17 Bq/kg(fresh) in greengrocery,cabbage and radish;0.05 Bq/kg(fresh) in apple;0.08 Bq/kg(fresh) in oceanic gulfweed and 4.29 Bq/kg(fresh) in pine needle sample,respectively.The average specific activity of 137Cs is 0.24,0.12 and 0.08 Bq/kg(fresh) in rice,wheat and corn;0.02,0.03 and 0.03 Bq/kg(fresh) in greengrocery,cabbage and radish;0.02 Bq/kg(fresh) in apple;0.06 Bq/kg(fresh) in oceanic gulfweed and 0.08 Bq/kg(fresh) in pine needle.Also the radioactivity levels in eggplant,persimmon,hawkthorn,lichee,grazing and tea samples are also reported.
出处
《辐射防护通讯》
2010年第3期17-24,共8页
Radiation Protection Bulletin
关键词
环境监测
放射性核素
植物
Environment monitoring Radionuclides Plant