Advance of Methodology for Determination of Low-Level ⁹⁰Sr

This paper presents a review on the method of radiochemical analyses, including samples pretreatment, chemical separation and counting, for the determination of low-level ⁹⁰Sr in environmental and biological samples. The recommended standard methods in China and abroad are summarized, and a series of studies of this field in the world are described as well. It is suggested that the national standard methods for the determination of ⁹⁰Sr should be improved further, and a fast method for detecting ⁹⁰Sr in the nuclear and radiological emergency samples should be developed.