1. Analytical Research & Development, Merck, Rahway, New Jersey 07065, USA
2. Department of Chemistry (retired), University of California Davis, Davis, California 95616, USA
3. A. R. Smith Department of Chemistry and Fermentation Sciences, Appalachian State University, Boone, North Carolina 28608, USA
4. Department of Chemistry and Biochemistry, California State University, Fullerton, California 92831, USA
5. Department of Chemistry (retired), Wittenberg University, Springfield, Ohio 45501, USA
6. Retired, Waxahachie, Texas 75165, USA
7. Department of Chemistry, The State of New York College at Geneseo, Geneseo, New York 14454, USA
8. Department of Biochemistry and Molecular Biology, Indiana University Purdue University Indianapolis, Indianapolis, Indiana 46262, USA
9. PID Analyzers, LLC, Sandwich, Massachusetts 02563, USA
10. Department of Chemistry, Saint Peter’s University, Jersey City, New Jersey 07306, USA
11. A. R. Smith Department of Chemistry and Fermentation Sciences (retired), Appalachian State University, Boone, North Carolina 28608, USA
12. Risk Management and Safety, Auburn University, Auburn, Alabama 36849, USA