Chlorinated catechols, guaiacols and syringols are by-products of pulp bleaching with chlorine (Lindstr Full-size image (<1 K) Full-size image (<1 K) m and Nordin, 1976; Kachi et al., 1980; Voss et al., 1980; McKague, 1981; Knuutinen, 1982). Recent changes in bleaching technology, particularly the implementation of chlorine dioxide bleaching, have minimized formation of the more highly chlorinated derivatives so that concentrations of these compounds in ...