Michael E. Ketterer

Michael E. Ketterer Profile Photo

Michael E. Ketterer, PhD, is an analytical chemist and Professor Emeritus of Chemistry and Biochemistry at Northern Arizona University (NAU).
He specializes in understanding the sources, transport, and environmental fates of long-lived radioactive contaminants (such as uranium and plutonium) near former and active nuclear sites.
He has performed mass spectrometric studies of uranium isotopes in off-site samples near the Portsmouth Nuclear Site (PORTS) which show conclusively that the contamination originated from PORTS.
Dr. Ketterer provides expert technical assistance to affected communities.

36
Sept. 26, 2025

S4E36: The Fallout You Never Knew About: California's Hidden Nuclear Legacy

Michael E. Ketterer's plutonium fingerprinting reveals that eastern California received Nevada Test Site fallout comparable to recognized downwind areas, strengthening the case for expanded mapping and compensation.
27
Sept. 18, 2024

S3E27: Los Alamos's Dark Legacy: Plutonium Pollution in Plain Sight

Chris Clarke talks with chemist Michael Ketterer about plutonium contamination in Acid Canyon, isotopic tracing, downstream risks, environmental justice, and the enduring consequences of Los Alamos's nuclear legacy.