1. Fed. Reg., EPA method 604, Phenols, Part VIII, 40 CFR Part 136, US Environmental Protection Agency, Washington, DC, 26 October 1984, p. 58.
2. EPA Method 625, Base/neutrals and acids, Part VIII, 40 CFR Part 136, US Environmental Protection Agency, Washington, DC, 26 October 1984, p. 153.
3. EPA Method 8041, Phenols by Gas Chromatography: Capillary Column Technique, US Environmental Protection Agency, Washington, DC, 1995, p.1.
4. Gas-chromatographic determination of phenols in aqueous samples after solid phase extraction
5. C18 reversed-phase trace enrichment of chlorinated phenols, guaiacols and catechols in water