Measurement of polycyclic aromatic hydrocarbons (PAHs) using gas chromatography - mass spectrometry (GC-MS).

Introduction

PAHs are a group of persistent organic pollutant compounds found at trace levels in ambient air. The accurate and traceable measurement of these compounds, which are toxic and possible or proven human compounds, is important in order to protect the health of the public and the environment. Some examples of PAHs are shown below:

Analytes

NPL holds UKAS accreditation for a wide range of PAHs in the particulate and vapour phases of ambient air, including benzo[a]pyrene, the PAH most harmful to human health. A full list of possible analytes is available on request.

Extraction and analysis

Samples are extracted using Soxhlet extraction, cleaned-up and then analysed by GC-MS:

Other PAH services

NPL also offers services for the analysis of liquid samples for PAHs, and the sampling of PAHs in ambient air. Complete measurement campaigns at industrial sites and consultancy services are also available.

For further information, please contact us.