Abstract
As a result of the Fukushima first nuclear power plant accident, the facility is holding large quantities of contaminated water, which includes seawater component. To establish a method for measuring the levels of low-concentration barium and strontium in the saltwater from which the scaling components (Ca, Mg and others) had been removed, a pretreatment method based on the solid-phase extraction of Ba and Sr with chelating resin was studied.
When the NaCl concentration of a sample solution was high, the extraction of Ba and Sr was inhibited. On the other hand, when the sample solution was diluted by adding ultrapure water before sample filtration, it was shown that the Ba and Sr can be extracted with sufficient accuracy.
The pH of the sample solution needed to be adjusted higher than neutral.
When the ammonium acetate concentration or the volume of the rinsing solution for the chelating resin after sample filtration was increased, it was found that the extraction of the Ba and Sr was affected.
