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Significance and Use
5.1 The most prevalent of the five radium isotopes in ground water, having a half life greater than one day, are 226Ra and 228Ra. These two isotopes also present the greatest health risk compared to the other naturally occurring nuclides of equal concentrations if ingested via the water pathway.
5.2 Although primarily utilized on a water medium, this technique may be applicable for the measurement of the 226Ra content of any media once the medium has been completely decomposed and put into an aqueous solution.
5.3 The general methodology and basis of this technique are similar to the methodology “Radium-226 in Drinking Water (Radon Emanation Technique)” as described in the document EPA-600//4-80-032.
1.1 This test method covers the measurement of soluble, suspended, and total 226Ra in water in concentrations above 3.7 × 10−3 Bq/L. This test method is not applicable to the measurement of other radium isotopes.
1.2 This test method may be used for quantitative measurements by calibrating with a 226Ra standard, or for relative measurements by comparing the measurements made with each other.
1.3 This test method does not meet the current requirements of Practice .
1.4 The values stated in SI units are to be regarded as standard. The values given in parentheses are mathematical conversions to inch-pound units that are provided for information only and are not considered standard.
1.5 Hydrofluoric acid (HF) is very hazardous and should be used in a well-ventilated hood. Wear rubber gloves, safety glasses or goggles, and a laboratory coat. Avoid breathing any HF fumes. Clean up all spills promptly and wash thoroughly after using HF.
1.6 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.
1.7 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.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
D1129 Terminology Relating to Water
D1193 Specification for Reagent Water
D2777 Practice for Determination of Precision and Bias of Applicable Test Methods of Committee D19 on Water
D3370 Practices for Sampling Water from Closed Conduits
D3649 Practice for High-Resolution Gamma-Ray Spectrometry of Water
D5847 Practice for Writing Quality Control Specifications for Standard Test Methods for Water Analysis
D7902 Terminology for Radiochemical Analyses
ICS Number Code 13.060.50 (Examination of water for chemical substances)
UNSPSC Code 12142207(Radioisotope sources)
|Link to Active (This link will always route to the current Active version of the standard.)|
ASTM D3454-18, Standard Test Method for Radium-226 in Water , ASTM International, West Conshohocken, PA, 2018, www.astm.orgBack to Top