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Depth Distribution of Sulfonamide Antibiotics in Pore Water of an Undisturbed Loamy Grassland Soil

^a Dep. of Urban Water Management, Swiss Federal Institute for Aquatic Science and Technology (Eawag), Überlandstrasse 133, 8600 Dübendorf, Switzerland
^b Dep. of Environmental Chemistry, Swiss Federal Institute for Aquatic Science and Technology (Eawag), Überlandstrasse 133, 8600 Dübendorf, Switzerland

View larger version (16K): [in this window] [in a new window]   Fig. 1. Absolute Br concentration CBr (mg L–1) as a function of depth for manured and control plots, 1 d or 3 d contact time of the applied matrix and 1 d after irrigation, respectively. Markers represent median values and error bars show the standard deviation (n = 7 per depth).

View larger version (31K): [in this window] [in a new window]   Fig. 2. Absolute concentration of Brilliant Blue (CBB, mg L–1), sulfadimidine (CSDM, µg L–1), sulfadiazine (CSDZ, µg L–1), and sulfathiazole (CSTZ, µg L–1) as a function of depth for manured and control plots and 1 d or 3 d contact time of the applied matrix and 1 d after irrigation, respectively. Filled markers represent median values and open markers show maximum values (n = 7 per depth). Missing symbols at a given depth indicate values <limit of detection (LOD).

View larger version (35K): [in this window] [in a new window]   Fig. 3. Relative concentrations of the substances (C%) as a function of depth in pore water normalized to the relative Br concentrations (CBr%) (Brilliant Blue = BB, sulfadimidine = SDM, sulfadiazine = SDZ, sulfathiazole = STZ). Filled symbols represent median values and open symbols show maximum values (n = 7 per depth). Missing symbols at a given depth indicate absolute values <limit of detection (LOD).