Pre-Validation Study for Dioxin and Dioxin-Like Compound Analysis in WWTP Sludge With the CALUX Bioassay – Emphasis on Obtaining Extracts Suitable for Both Chemo- and Bio-Analytical Determination. Publication Attachment: 4710.pdf Authors: Van Langenhove K, Keupers I, Croes K, Vandermarken T, Denison MS, Baston DS, Elskens M, Baeyens W Year: 2011