Leeder Consulting offer a new method for detecting ultra-trace levels of Polynuclear Aromatic Hydrocarbons (PAHs) at low nanogram per litre levels in waters.

GC–MS chromatogram showing trace levels of several PAHs
Black: Phenanthrene and Anthracene
Green: Fluoranthene and Pyrene
Blue: Benzo(a)anthracene and Chrysene
Purple: Benzo(b)fluoranthene, Benzo(k)fluoranthene, and Benzo(a)pyrene

PAHs occur in the environment as a result of incomplete combustion of hydrocarbons, such as bushfires, automobile emissions, cigarette smoke, or wood-fired heating systems. ANZECC/ARMCANZ guidelines (1996) specify a concentration limit of 10 ng/L of benzo(a)pyrene in drinking water. This limit has also been adopted by NHMRC. Several other PAHs are also noted for their toxicity. These compounds are increasingly “under the microscope” as our understanding of their toxicity at ultra-trace levels grows.

All these PAHs can be analysed with a reporting limit of 10 ng/L in water in one comprehensive test. Leeder Consulting has attained NATA accreditation for the analysis of PAHs at these low levels. Leeder Consulting are acknowledged as pioneers in the field of ultra-trace level measurement.