Hear new voices of radon-induced lung cancer survival woven throughout the Symposium. Be inspired by how three Keynote Speakers diagnosis and recovery shifted personal passions to an action planBe a part of their plan and take away new tools to increase radon testing and mitigation in your service area.  You will discover new directions for radon policy, emerging technical advances in measurement and mitigation, and cutting-edge radon science and research.  Visit  the  Trade Show featuring radon and business-related companies offering useful and interesting products and services.
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Tuesday, October 2 • 3:45pm - 4:05pm
Science & Research: Quality Assurance In Measurement Of Radon In Water By Liquid Scintillation Counting

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Quality Assurance in Measurement of Radon in Water By Liquid Scintillation Counting
 Uttam Saha 1, Leticia Sonon 1, Pamela Turner 2, Dana Lynch 3, and Gabrielle Dean 2
1 Agricultural and Environmental Services Laboratories, College of Agricultural and Environmental Sciences, The University of Georgia, Athens, GA, USA.
2 Department of Financial Planning, Housing and Consumer Economics, College of Family and Consumer Sciences, The University of Georgia, Athens, GA, USA.
3 Family and Consumer Sciences Agent, The University of Georgia Cooperative Extension, Monroe County Extension, Athens, GA, USA.
Our papers in 2016 and 2017 Symposia discussed optimum sampling and analysis methods for radon in waterThis presentation discusses quality assurance. The counting efficiencies of multiple liquid radium standards purchased from a commercial manufacturer produced inconsistent and unacceptable counting efficiencies; thus, their use in the analysis appeared questionable. Duplicate analysis of radon in 142 well water samples mostly yielded relative percentage deviation (RPD) ≤15 and seldom >15. However, >15 RPD was associated with the presence of an air bubble in one of the duplicate samples. Repeated analyses of two radon proficiency-test samples, regenerated at 40 to 60 day intervals over a period of two years, consistently yielded acceptable precision (based on the duplicate analyses) and accuracy (closeness to the theoretical radon concentration). Thus, a proficiency testing for radon in water is a valid and valuable option, and should be part of programs that analyze radon in water. 

avatar for Uttam Saha

Uttam Saha

Program Coordinator and Public Service Associate, Agricultural and Environmental Services Laboratories, University of Georgia
Dr. Uttam Kumar Saha is the Program Coordinator and Public Service Associate, Agricultural and Environmental Services Laboratories, University of Georgia. Dr. Saha has a long 26 years of research, teaching, and outreach experience in soil fertility & crop production, hydroponic production... Read More →

Tuesday October 2, 2018 3:45pm - 4:05pm EDT