Because of PCBs' environmental toxicity and classification as a persistent organic pollutant, PCB production was banned by the United States Congress in 1979 and by the Stockholm Convention on Persistent Organic Pollutants in 2001. Environmental Protection Agency (EPA), PCBs cause cancer in animals and are probable human carcinogens.
The International Agency for Research on Cancer (IARC), rendered PCBs as definite carcinogens in humans. Many rivers and buildings including schools, parks, and other sites are contaminated with PCBs, and there have been contaminations of food supplies with the substances.
(Elements & Compounds) any of a group of compounds in which chlorine atoms replace the hydrogen atoms in biphenyl: used in industry in electrical insulators and in the manufacture of plastics; a toxic pollutant that can become concentrated in animal tissue.
Alpha Analytical's experienced staff has written and/or collaborated with several industry consultants to publish a number of environmental technical reports and presentations on various contaminants and analytical methods.
This article discusses the use of Standard Reference Materials (SRMs) as part of a quality assurance program requiring greater analytical precision and accuracy than routine compliance testing.
Analysis of biological tissue presents a difficult challenge to the laboratory in that organisms come in all shapes and sizes, and very often require some preparation such as homogenization and/or dissection before digestion and analysis.
Results from an ultra-fast gas chromatograph are compared with results from USEPA TO-15 and USEPA TO-13.