东山口岸环境放射性监测报告

A radioactivity monitoring report at Dongshan Port

目的掌握东山口岸环境放射性基本情况,判断港区是否受到日本核辐射污染,为口岸放射性监测工作提供科学依据。方法在港区选择3个监测点,连续进行3个月监测,对监测数据采用重复测量设计的方差分析进行分析。结果不同监测点间放射性监测值差别具有显著性(P<0.001),其中检疫查验科办公室放射性最低,码头堆场最高,但监测值均未超过东山口岸放射性本底值3倍及1μSv/h的放射性超标上限;不同时间点间放射性监测值无显著性差别(P>0.05)。结论监测时间段内,东山口岸环境放射性未发生明显变化;从监测结果可以判定,东山港区未受到日本放射性污染影响。

Objective To monitor and assess environment radioaction of Dongshan Port during Japanese nuclear leaking period and provide scientific basis for radioactive background of Dongshan Port. Methods We selected 3 representative monitoring stations in Dongshan Port, monitored environment radioaction during 3mounths, and ana- lyzed data by repeated measuring the variances. Results Environment radioaction results of 3 monitoring stations had significant difference （ P 〈 0.001 ）. The port station had the highest environment radioaction and the office sta- tion had the lowest. All the Environment radioaction results did not exceed than 3 times of the radioactive back- ground of Dongshan Port and the country radioactive limiting standard （ 1 μSv/h）. Conclusion The environment radioaction of Dongshan Port had no significant change during Japanese nuclear leaking period.