PCB

PCBs (polychlorinated biphenyl) are a complex mixing of organochlorine compounds. In the past, PCBs were largely used in construction, especially because of their low cost. In 1972, PCBs have been banned in open systems (for example paints, sealants, rubber cement, cloth and paper) because of their toxic effect on environment and human being. In 1986, a total ban was finally placed on any form of PCB use.

PCBs are easily absorbed by the gastrointestinal tract, by skin and lungs. They spread quickly through the body and accumulate in adipose tissue. PCB can provoke skin affection, liver, spleen and kidneys damages, and affect the immune system. The carcinogenic effect of PCBs has been established on animals, but could not be confirmed for humans by now. In Japan, an accident in 1986 spread out large quantities of PCB in rice oil, which were absorbed by the population during several months, causing neurological troubles and numerous miscarriages.