Abstract.Two methods for analysis of chlorinated organic compounds found in pulp bleaching effluents have been compared in order to determine their efficiencies. Method A uses a solid phase extraction followed by derivatization with acetic anhydride. Method B consists in an in situ derivatization followed by liquid-liquid extraction of the acetic esters. Both methods have proved to be efficient for analyzing chlorinated organic compounds and, with the exception of 3,4,5-trichlorosyringol which appeared in a very low concentration when method A was employed, all compounds present in the standard mixture as well as in a pulp bleaching effluent sample have been detected. A detection limit of 0.4 ppb has been established. Quantitative determinations are being carried out and will be presented in a future article. 0 1995 John Wiley 9: Sona, Inc.
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