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Answer to Question #2345 Submitted to "Ask the Experts"Category: Environmental and Background Radiation — Geological Formation, Ores The following question was answered by an expert in the appropriate field: Q
How do I convert Bq/g to ppm for U, Th, and K in rocks?
A
Uranium (238U)
1 ppm = 0.33 pCi/g 1 pCi/g = 3 ppm Thorium (232Th) 1 ppm = 0.11 pCi/g 1 pCi/g = 9.1 ppm Potassium 1 ppm = 0.000817 pCi/g 1 pCi/g = 1224 ppm One becquerel (Bq) = 27 picocuries (pCi) One picocurie (pCi) = 0.037 becquerels (Bq) Paul W. Frame, CHP, PhD
Answer posted on 9 April 2003. The information and material posted on this Web site is intended as general reference information only. Specific facts and circumstances may alter the concepts and applications of materials and information described herein. The information provided is not a substitute for professional advice and should not be relied upon in the absence of such professional advice specific to whatever facts and circumstances are presented in any given situation. Answers are correct at the time they are posted on the Web site. Be advised that over time, some requirements could change, new data could be made available, or Internet links could change. For answers that have been posted for several months or longer, please check the current status of the posted information prior to using the responses for specific applications.
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