秦山核电基地外围环境陆生植物放射性水平监测

Monitoring of Radiactivity Levels in Terrestrial Plants in External Envinonmental around Qinshan NPP Base

自1992年,浙江省辐射环境监测站对秦山核电基地外围环境辐射水平进行了连续的监督性监测。1992-2004年,秦山核电基地外围陆生植物样品中放射性核素137Cs9、0Sr3、H平均含量的监测结果分别为:大米,0.12、0.07、0.44 Bq/kg(干重);青菜,0.05、0.28、1.6 Bq/kg(鲜重);萝卜,0.02、0.08、2.6 Bq/kg(鲜重);茶叶,0.51 Bq/kg(干重)、3.7 Bq/kg(干重)4、.7 Bq/kg(鲜重);松针,0.12、10.8、4.2 Bq/kg(鲜重)。与基地运行前本底值和对照点监测值相比,除2004年松针样品中3H含量外,其它样品中各核素含量均在正常范围内波动。

Contiuned monitoring of environmental radiation levels was counducted around the QNPP Base since 1992 by Environmental Radiation Monitoring Center of Zhejiang Province. During 1992 -2004, the contents of 137Cs, 90Sr, 3H, as monitored in the environment, were 0.12, 0.07, 0.44 Bq/kg （dried weigh） for rice; 0.05, 0.28, 1.6 Bq/kg （fresh） for green vegetables; 0.02, 0.08, 2.6 Bq/kg （fresh） for radish; 0.51 Bq/kg （dry weigh）, 3.7 Bq/kg （dry weigh）, 4.7 Bq/kg （fresh） for tea; and 0.12, 10.8, 4.2 Bq/kg （fresh） for pine needle, respectively. Compared with the monitored values of background and control points prior to operation, the values of contents of nuclides varied in the normal range, without radioactive contamination to terrestrial plants except for pine needle samples in 2004.