Atmospheric Dioxin Sources Apportionment in PM2.5 and Evaluation of the Relative Health Risk in Taiwan

摘要

The name "dioxins" is often used for the family of structurally and chemically related polychlorinated dibenzo para dioxins (PCDDs) and polychlorinated dibenzofurans (PCDFs). Polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) are persistent organic pollutants (POPs), of the 75 PCDDs and 135 PCDFs compounds, only seventeen PCDD/F congeners, which have chlorines in 2,3,7,8 positions are most toxic to humans. PCDD/Fs are formed and released unintentionally from anthropogenic sources, and may be transported long distances to other environmental compartments, so the atmosphere is a major pathway for the transport and deposition.