General view of employee Lloyd Monkman using a Perkin-Elmer Atomic Absorption Spectrophotometer to analyze the lead content of an airborne particulates sample in a laboratory at the Chemistry Division of the Air Pollution Control Directorate. Per notations accompanying the photograph, the laboratory analyzed 10,000 such samples annually as part of National Air Surveillance network efforts to track toxic lead and cadmium levels.
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Perkin-Elmer Corporation. “Perkin-Elmer Atomic Absorption Spectrophotometer in Use at Air Pollution Control Directorate,” 1970–1979. Photographs from the Perkin-Elmer-Applera Collection, Box 4. Science History Institute. Philadelphia. https://digital.sciencehistory.org/works/0c483k344.
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