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environmental health laboratory branch

OAQ Staff and Research Specialties

Acting Chief, Outdoor Air Quality Section

Jeff Wagner, Ph.D., Research Scientist

Electron microscopy, FTIR micro-spectroscopy, environmental forensics, particle samplers, natural occurences of asbestos


Emergency Preparedness Unit

Kevin Chao, Ph.D., Research Scientist

All hazards preparedness training, CBRNE, chemical incident response, chemical release exposure and plume modeling

David Pierotti, Ph.D., Research Scientist

All hazards substance screening, Chemical incident response, mobile laboratory, GC/MS, canister sampling


Environmental Exposure Investigations Unit

Sutapa Ghosal, Ph.D., Research Scientist

Raman micro-spectroscopy, flame retardants, environmental forensics, bioaerosols, secondary ion mass spectrometry

Paul Wong, M.S., Research Scientist (retired)

Environmental lead, trace metals, ion chromatography, ICP/MS, XRF


Forensic Special Studies Unit

Zhong-Min Wang, Ph.D., Research Scientist

Nanoparticle generation, nanoparticle sampling, electron microscopy, XRD, XRF

Stephen Wall, Ph.D., Research Scientist (retired)

Subject matter expert in environmental forensics methods development and laboratory information management system (LIMS) applications.

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