Abstract
Saponification extraction of sediment samples was performed for the analysis of phenolic acids. After separation of phenolic acids by silica gel column chromatography, p-hydroxybenzoic, vanillic, syringic, p-coumaric ( cis and trans), ferulic ( cis and trans) and protocatechuic acids were identified, and the presence of o- and m-hydroxybenzoic acids was indicated by gas chromatography-mass spectrometry in lake, river and sea sediments. The content of each phenolic acid was less than 110 μg per gram of dry sample. These phenolic acids are mainly derived from vascular plants and their detritus.
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