ASTM D4785-20 PDF

Scope: 1.1 This test method covers the quantification of low levels of radioactive iodine in water by means of chemical separation and counting with a high-resolution gamma ray detector. Iodine is chemically separated from a 4 L water sample using ion exchange and solvent extraction and is then precipitated as cuprous iodide for counting. 1.2 The values stated in SI units are to be regarded as standard. The values given in parentheses after SI units are provided for information only and are not considered standard. 1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. For specific hazard statements, see 8.16, 8.17, 8.18, Section 9, and 13.2.11. 1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

ASTM D4785-20 Referenced Document

ANSI N42.22 Traceability of Radioactive Sources to the National Institute of Standards and Technology (NIST) and Associated Instrument Quality Control
ASTM D1129 Standard Terminology Relating to Water
ASTM D1193 Standard Specification for Reagent Water
ASTM D2777 Standard Practice for Determination of Precision and Bias of Applicable Methods of Committee D-19 on Water
ASTM D3370 Standard Practices for Sampling Water from Closed Conduits
ASTM D3648 Standard Practices for the Measurement of Radioactivity
ASTM D3649 Standard Test Method for High-Resolution Gamma-Ray Spectrometry of Water
ASTM D4448 Standard Guide for Sampling Ground-Water Monitoring Wells
ASTM D5847 Standard Practice for Writing Quality Control Specifications for Standard Test Methods for Water Analysis
ASTM D6001 Standard Guide for Direct-Push Water Sampling for Geoenvironmental Investigations
ASTM D7282 Standard Practice for Setup, Calibration, and Quality Control of Instruments Used for Radioactivity Measurements*， 2021-05-15 Update
ASTM D7902 Standard Terminology for Radiochemical Analyses

2020 ASTM D4785-20 Standard Test Method for Low-Level Analysis of Iodine Radioisotopes in Water
2008 ASTM D4785-08(2013)e1 Standard Test Method for Low-Level Analysis of Iodine Radioisotopes in Water
2008 ASTM D4785-08 Standard Test Method for Low-Level Analysis of Iodine Radioisotopes in Water
2000 ASTM D4785-00a Standard Test Method for Low-Level Iodine-131 in Water
1993 ASTM D4785-93 Standard Test Method for Low-Level Iodine-131 in Water