1. European Committee for Standardization (2004) prEN 14039:2004:E. Characterization of waste – determination of hydrocarbon content in the range of C10 to C40 by gas chromatography. European Committee for Standardization, Brussels
2. ISO (2004) ISO/DIS 16703:2004. Soil quality - determination of content of hydrocarbon in the range C10 to C40 by gas chromatography. ISO, Geneva
3. US Environmental Protection Agency (1994–2007) EPA methods 3540C, 3541, 3545, 3550B, 3560, 4030, 8270C, 8275A, 8440. Test methods for evaluating solid waste, physical/chemical methods: EPA publication SW-846. http://www.epa.gov/epaoswer/hazwaste/test/main.htm . Accessed 19 June 2008
4. Government of British Columbia, Ministry of Water, Land and Air Protection (2005) Extractable petroleum hydrocarbons in solids by GC/FID. British Columbia Environmental Laboratory Manual, Ministry of Environment, Government of British Columbia, Canada
5. American Society for Testing and Materials (ASTM) (1990) Standard practice for oil spill identification by gas chromatography and positive ion electron impact low resolution mass spectrometry. ASTM, Conshohocken