中文摘要：

用α能谱法对莱州湾南岸地下卤水中的铀进行分析,发现卤水中溶解铀的浓度范围为3.4～96.0μg/L,80%以上站位卤水铀浓度超过了30μg/L,高于某些铀矿区地下水中铀的浓度。从卤水的形成过程及环境、含水层沉积物的铀含量及地下卤水对沉积物的淋溶作用、地表水下渗等几个方面对高浓度铀的成因进行了分析,发现卤水形成时海水的蒸发浓缩和锰氧化物还原可能是主要成因,藻类的矿化分解使其吸附的大量铀解吸进入地下水也可能是1个重要影响因素。

英文摘要：

In this study,the geochemical anomaly of high dissolved uranium concentration is found via alpha spectrometry present in the underground brines at the south coast,Laizhou Bay.The dissolved uranium concentration is in the range of 3.4~96.0 μg/L,and more than 80% of the samples measured exceed 30 μg/L.The reasons for the high dissolved uranium concentration are evaporation of seawater,reduction of manganese oxide,and remineralization of algae.