山东近岸海域总铀的分布研究

The Distribution of Uranium along the Shandong Inshore

在2006-08,12月和2007-04,10月对山东近海进行了4个航次的调查,分析了该海区海水、沉积物(秋季)和生物体(秋季)中总铀的含量分布和时空变化特征。结果表明,海水中总铀的含量变化范围为2.46~4.59μg/L,平均浓度为3.32μg/g,均处于正常的本底水平,水平分布比较均匀,没有明显的规律性,季节分布表明,秋季浓度最高,其他3个季节浓度接近。沉积物中总铀的含量变化范围为1.46~2.24μg/g,平均浓度为2.01μg/g,平面分布呈现近岸海域大于远岸海域,青岛近海含量较高的分布特征。生物体中总铀的含量范围为0.23~1.07μg/g(干重),平均浓度为0.50μg/g(干重),各站位生物体中总铀的相对含量总体呈现胶州湾内较高、南部海域高于北部的分布特征。

This paper researched the Uranium in seawater,sediment and organism along the Shandong inshore,based on the results of the four cruises during 2006～2007.The result showed that: The concentrations of Uranium in seawater varied from 2.46 to 4.59 μg/L,and the average was 3.32 μg/L.All the values were under the background.The highest value of Uranium in seawater was in autumn,and lower in winter Spring is more lower and summer is the lowest.The concentration in the sediment varied from 1.46 to 2.24 μg/g,the average is 2.01 μg/g,and the concentrations near the Qingdao area were much higher.The concentrations in the biology varied from 0.23 to 1.07 μg/g(dry weight), the average concentrations were 0.50 μg/g(dry weight),and the concentrations in the south sea area were higher appreciably than in the north.