Havlík B, Hanusová J, Rálková J
J Hyg Epidemiol Microbiol Immunol. 1980;24(4):396-404.
In surface waters of the mining and processing areas of uranium ore there is an increased content of free and bound barium ions due to the use of barium salts for the treatment of waste and mine waters containing radium. In model experiments with the algae Ankistrodesmus falcatus, Chlorella kessleri and Scenedesmus obliquus, we studied the effect of Ba2+ on the accumulation of 226Ra. It was found that the accumulation of radium by algae is negatively influenced with barium concentrations higher than 1 mg.l-1. The accumulation of barium of organisms of primary production was studied using 133BaCl2. At a barium content in the medium of 4.0, 0.46 and 0.04 mu. l-1, the algae accumulated 30-60% of the added amount of barium during an exposure of 15 days. Biochemical analyses showed that barium is bound to the cellular membrane and to other components of the algal cell that cannot be extracted with water or alcohol.
在铀矿开采和加工区域的地表水中，由于使用钡盐处理含镭的废水和矿井水，游离和结合态钡离子的含量增加。在对镰刀形纤维藻、凯氏小球藻和斜生栅藻进行的模型实验中，我们研究了Ba2+对226Ra积累的影响。结果发现，当钡浓度高于1mg·l-1时，藻类对镭的积累会受到负面影响。使用133BaCl2研究了初级生产生物对钡的积累情况。在培养基中钡含量为4.0、0.46和0.04μg·l-1时，藻类在15天的暴露期间积累了添加钡量的30-60%。生化分析表明，钡与细胞膜以及藻细胞的其他成分结合，这些成分不能用水或酒精提取。
