Abstract
Phenol was listed as an item to be monitored for preserving aquatic life on November, 2003. The lowest guide-line value was set at 10 μg/l in a trout special area. Studies of the analytical method that is used to determine phenol and chlorophenols by solid-phase extraction and derivatization GC/MS clarified the following: a 500 ml water sample adjusted below pH 4 was passed to a solid-phase extraction cartridge; after elution and enrichment, phenol and chlorophenols were derivatized with pentafluorobenzyl bromide and determined by GC/MS. The detection and quantitation limits of phenol and chlorophenols by the proposed method were 0.016∼0.024 μg/l and 0.048∼0.071 μg/l, respectively. Using the proposed method, the concentrations of phenol and chlorophenols in river water sampled at 20 sites in Tochigi prefecture were determined. The results show that the concentration range of phenol is between ND and 0.39 mg/l. Except for 2,4-dichlorophenol at one site, no chlorophenols were detected.
