Fig. 3.

Separation and identification of triclosan in all analysed matrices (influent and effluent wastewater, river water and digested sludge). XIC at m/z 286.9439 (0.005-Da mass-window width, black trace), at m/z 288.9413 (0.005-Da mass-window width, blue trace) and at m/z 290.9383 (0.005-Da mass-window width, red trace) in four different matrices (from top to bottom). The right column shows the mass spectra of the peak eluted at 14.6 min and the black, blue and red arrows indicate respectively [M]⁻, [M + 2] ^-, [M + 4] ^– peaks with relative intensities matching those expected from a compound with three chlorines within 5% of the predicted abundance