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Traditional liquid-liquid extraction of wastewaters for TPH (Total Petroleum Hydrocarbons) generally requires large samples i.e.1L to be extracted with an appropriate solvent, the resulting extract concentrated to a suitable volume and a small i.e. 1-3μl volume injected into a GC-FID. This technique while effective is nonetheless labor intensive and requires large amounts of sample and solvent. As most of the glassware is used repetitively the possibility of cross contamination is present despite thorough cleaning.
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