Polychlorinated biphenyls (PCBs) are a class of organic compounds based on biphenyl substituted with 1-10 chlorine atoms. Till the 1980s PCBs were used as coolants and dielectric fluid in transformers, flame retardants, hydraulic fluids, additives in plastics and for many other applications. They are toxic, persistent and bioaccumulate in terrestrial and aquatic biosystems and are ubiquitous in the environment. Production and use is nowadays banned nearly worldwide.
This Application Note describes the extraction and determination of PCBs in a dried sediment SETOC sample according to EPA 3541. The sample was extracted with the UniversalExtractor E-800 in the Soxhlet warm mode. The quantification was done by Labor Veritas Zurich, an ISO 17025 accredited laboratory.