GB/T 13071-2010 "Determination of the Radioactivity Ratio of 234U/238U, 230Th/232Th in Geological Water Samples - Extraction Chromatography Separation by Extraction Resin-α Spectroscopy" standard specifies the method of extracting chromatography separation by Extraction Resin, and the method of determining the radioactivity ratio of 234U/238U and 230Th/232Th in geological water samples by α Spectroscopy. This standard is suitable for the analysis of uranium and thorium isotopes in different types of geological water samples. It provides the technical requirements and operating procedures for the determination of these radioisotopes to ensure the accuracy and Reliability of the determination results. The standard has important reference value for relevant laboratories and geological researchers.