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Answer to Question #2165 Submitted to "Ask the Experts"Category: Radon The following question was answered by an expert in the appropriate field: Q
With respect to radon, what does Activity Median Diameter (AMD) mean?
A
I believe the concept you are asking about is called the "activity median aerodynamic diameter" (AMAD). A Google search with this descriptor on the Internet gave over 1,000 hits. A number of references provide the technical definition of AMAD and describe its relevance and use. AMAD can be applied to radon and radon daughters like any other aerosol.
James E. Turner, PhD, CHP
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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