Fig. 3From: Equilibrium sampling of HOCs in sediments and suspended particulate matter of the Elbe RiverCfree (pg L−1) of PCBs (a, c) and selected PAHs (b, d) in sediment and SPM samples along the German part of the River Elbe. Data points are mean values and the error bars represent the standard deviations. Cfree sediment n = 3 (Meißen km 80, Cfree n = 2). Cfree SPM n = 3 (Barby km Cfree n = 2)Back to article page