Different to dioxins, polychlorinated biphenyls (PCBs) were produced intentionally. These compounds were used for plenty of technical purposes until the 1980s. In transformers, electric capacitors, in hydraulic systems, as well as in softeners of dyes, insulators, plastics and caulking compounds. This shows, everyone is in direct daily contact to potential PCB sources.
Since the 1980s development and regulation of maximum levels for dioxins and/or PCBs has been given in food, feed and environmental matrices. The European Union Regulations 589/2014, 252/2012, 709/2014, 152/2009, 709/2014 or 882/2004 are just a few examples. In addition to these documents regulations, norms, and recommendations from US authorities EPA and FDA form the global role models for almost every lab dealing with dioxins and PCBs.
Due to the omnipresence of both, dioxins and PCBs, there is a certain background exposure not being expected to affect human health. However, owing to the highly toxic potential, constant efforts need to be undertaken to reduce background exposure and keep the dietary uptake at a minimum. As already lowest concentrations (in the range of femtogram = 10-15 g) of these substance classes can cause severe toxic effects, it is necessary to go for highly sophisticated analysis and sample preparation. For the latter, LCTech offers unique, technically world-leading solutions.