Method for determination of (sup 90)Sr in vegetation

摘要

This report describes a method for determination of (sup 90)Sr in vegetation. The method consists of wet-ashing the samples and separating Sr from the sample matrix by oxalate precipitation and extraction chromatography. (sup 90)Y ingrowth is awaited after which Y is separated from Sr and (sup 90)Y measured in a proportional counter. The method has been applied on two reference materials and the (sup 90)Sr results agree well with the recommended values. The method has also been used on 20 samples of blueberry twigs and the mean recovery of Sr was 74%