Dioxin-like activity of the crude sediment extracts and the multilayer fractions in the RTL-W1 and H4IIE.luc assays expressed as biological toxicity equivalents (Bio-TEQ) in pg/g dw.

n.d. = not detectable/below detection limit. Data are given as means of 3 replicates ± SD. If no standard deviation is given, Bio-TEQ values could only be calculated for one single triplicate.