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Persistent Organic Pollutants: Contaminated Site Investigation and Management Toolkit

… data No data No data No data No data No data Most of the PCB congeners in pure form are colourless, odourless crystals. Commercial PCB mixtures are clear viscous liquids. Viscosity ofmixtures … Holding Company of Nigeria (PHCN) was a major user of PCB-containing transformer oil between 1921 and 1989. The …
20 May 2026 Document