Included are the pesticide chlordane, arsenic, tributyltin, nicotine, tobacco smoke and bisphenol A. (scientificamerican.com)
For example, toxaphene, DDT, PCBs and chlordane were found nearly two decades ago in beluga whales. (sciencenews.org)
Chlordane, toxaphene, DDT and PCBs are all examples of persistent organic pollutants — chemicals that were once widely used in agriculture and manufacturing (or accidentally produced through industrial processes or combustion) but are now banned due to their adverse effects on human health and the environment. (sciencenews.org)