Total Petroleum Hydrocarbons (TPH) in Soils by GC-FID

SOP: 2670

UKAS accredited; MCERTS accredited

UKAS & MCERTS accredited: Total petroleum hydrocarbons in the range C6–C40

UKAS accredited: Gasoline Range Organics (GRO), Diesel Range Organics (DRO)

Optional carbon banding is available.

Methodology – Extraction of an as received soil sample, following chemical drying with sodium sulphate, into dichloromethane followed by determination of total petroleum hydrocarbons by gas chromatography using flame ionisation detection (GC-FID).

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A number of different publications and standards cite sulphate methods. BR279 (1995) has largely been superseded by analytical procedures as detailed in TRL 447 and BRE Special Digest:1 2005 3rd Edition. In addition further reference may be made to BS EN 144-1:2009 + A1:2012 for the testing of aggregates and BS 1377:2018 for soils for civil engineering purposes.

Testing to meet the requirements of UKWIR Report Ref. No. 10/WM/03/21 Guidance for the selection of water supply pipes to be used in brownfield sites.

Testing & reporting is undertaken in accordance with BS 3882:2015 Specification for topsoil and BS 8601:2013 Specification for subsoil and requirements for use

All Asbestos Methods