Determination by MS‐MS of 1,1‐dichlorodimethyl sulfone from pulp mill bleach plant effluents in aquatic organisms

Gas chromatography (GC) with electron capture detection (ECD), GC combined with mass spectrometry (MS), GC with multi‐stage mass spectometry (MS‐MS), and direct inlet MS‐MS have been used to determine 1,1‐dichlorodimethyl sulfone (DDS) in aquatic organisms in the receiving waters outside a pulp mill bleach plant. Both GC‐MS‐MC and direct inlet MS‐MS of tissue extracts of fish and mussel appear to be sensitive, selective, and rapid analytical techniques for the determination of DDS.