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Solid phase extraction (SPE) was used as sample preparation method in the SPE/OC procedure, for the qualitative and quantitative determination of potential products of biodegradation in water samples. The group of examined compounds consisted of aliphatic hydrocarbons, non-ionic surfactant as emulsifier, polyethylene glycols, fatty alcohols and carboxylic acids. The applicability of various sorbent/eluent...