Fig.8-6 Flowchart for the analysis of rare earth elements (REEs) and REE content in groundwater samples by onsite extraction methods
(a) Outline of the REE analysis with a chelate resin. After the onsite extraction, REE content was measured by the ICP-MS at JAEA. We improved the preparation method for the ultratrace analysis of REEs in groundwater (less than 0.1 ng/L). (b) Reproducibility of the REE analysis confirmed for groundwater by a chelate resin.
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