This report describes an analytical methodology developed in support of the Canadian Environmental Protection Act. The methodology is used to identify and quantify trace amounts of polychlorinated dibenzo-para-dioxins (PCDDs) and polychlorinated dibenzofurans (PCDFs) in pulp and paper mill effluents. The method detection limit depends on sample matrix characteristics and can be as low as 2-20 pg/L (parts per quadrillion) for PCDD and PCDF cogeners. The report describes sample collection, extraction, cleanup, chromatographic separation, and identification and quantification of tetra- through octa-CDD/CDF cogeners, including 2,3,7,8-tetrachlorodibenzo-para-dioxin (2,3,7,8-TCDD) and 2,3,7,8-tetrachlorodibenzofuran (2,3,7,8-TCDF).

Air, Air pollution, Quality, Internal, Buildings, Chemical analysis and testing, Determination of content, Gas analysis, Polychlorinated biphenyls, Halogenated benzenoid hydrocarbons, Aromatic hydrocarbons, Test specimens, Sampling methods