| source of radium in a well-water-augmented florida lake. | a study of the lake waters of saddleback lake, florida was undertaken with the goal of determining the source of elevated radium activities in the lake. four radium isotopes, (226)ra, (228)ra, (223)ra and (224)ra, were measured and activities of all the four radium isotopes were substantially greater in the well water used to augment the lake as compared to the lake waters. in the surface water, radium activities were highest close to the well used for augmentation in the initial sampling. activ ... | 2006 | 16730106 |