Rapid Determination for TEQ Evaluation of Dioxins/Furans(PCDD/DFs) and Coplanar Polychlorinated Biphenyls(Coplanar PCBs) by Use of Indicator Isomer.
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概要
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We have analyzed a variety of samples for PCDD/DFs and coplanar PCBs. In these numerous data, besides, a great impact of 2, 3, 4, 7, 8-PeCDF to toxicity equivalency quantity (TEQ) contribution was common to different sample matrixs. Consequently, a usage of this isomer for the determination of total TEQ was evaluated and discussed. For example, there was found a good correlation coefficient between the levels of 2, 3, 4, 7, 8-PeCDF and total TEQ in exhaust gas, ash, ambient air, soil, sediment, environmental water and human blood. In addition, only in sediment and environmental water, the second indicator isomer was also considered to play a vital role for the total TEQ. Based on these findings, it was quiet possible to calculate the total TEQ just using the correlation factor of indicator isomers. Consequently, in this study, a simple and rapid analytical method was established for the total TEQ of PCDD/DFs and coplanar PCBs.
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