Recommended Radium-226 Values for Four CCRMP Uranium Reference Materials |
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| Authors: | Henry F STEGER CW SMITH |
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| Institution: | Minerals Research Program, Mineral Sciences Laboratories, CANMET, Energy, Mines and Resources Canada, Ottawa |
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| Abstract: | The Canadian Certified Reference Materials Project announces recommended values for radium-226 activity in four reference materials previously certified for uranium. Thirteen laboratories participated in the interlaboratory program for DL-la, DH-la, BL-4a and BL-5. Four measurement techniques were applied. Procedural and instrument calibrations were performed with certified radium solutions from the National Bureau of Standards, thereby establishing traceability of the recommended values for radium-226 in DL-la, DH-la, BL-4a and BL-5. These reference ores are also shown to be close to, if not in, radioactive equilibrium. |
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