ANDREW BROOKES, NATIONAL PHYSICAL LABORATORY / SCIENCE PHOTO LIBRARY ANDREW BROOKES, NATIONAL PHYSICAL LABORATORY / SCIENCE PHOTO LIBRARY
Editorial use only.
Polycyclic aromatic hydrocarbon analysis. Researcher using a combined gas chromatograph and mass selective detector (GC/MSD) to carry out analysis of polycyclic aromatic hydrocarbons (PAHs) in samples of UK air. This analysis is part of the DEFRA (Department for Environment Food and Rural Affairs) air quality network. Photographed in 2015, at the National Physical Laboratory, Teddington, UK.
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