抄録
Waste combustion, commercial PCB products, and two agrochemicals, PCP and CNP, are considered as four major sources of dioxins in the environment of Japan. In this study, 2,3,4,7,8-PeCDF, 2,3,3',4,4'-PeCB (#105), 1,2,3,4,6,7,8-HpCDD, and 1,2,3,7,8-PeCDD were selected as respective indicator isomers for the above-mentioned four dioxin sources. Formulas to estimate the respective TEQs originated from the four sources using the concentrations of the four indicator isomers were proposed, and were validated by comparison with the previous reports. The formulas were applied to environmental samples such as ambient air, soil, river sediment, and river water. The estimated total TEQ was approximately equal to the observed total TEQ.
