Total Organic Carbon in Soils

SOP: 2625

UKAS accredited; MCERTS accredited

Total organic carbon (TOC)

The sample is first acidified to remove any inorganic carbon.  Total organic carbon is then determined by high temperature combustion in oxygen using an elemental analyser.  The resultant carbon dioxide is measured by infrared (IR) detection.

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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 BR279 (1995) has largely been superseded by analytical procedures as detailed in TRL 447 and BRE Special Digest:1 2005 3rd Edition.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