PCB Congener Toxicity Equivalency Factor

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PCB Congener Toxicity Equivalency Factors1
3,3',4,4'-TeCB (PCB-77) 0.0001
3,4,4',5- TeCB (PCB-81) 0.0003
3,3',4,4',5-PeCB (PCB-126) 0.1
2,3,3',4,4'-- PeCB (PCB-105) 0.00003
2,3,4,4',5-- PeCB (PCB-114) 0.00003
2,3',4,4',5-- PeCB (PCB-118) 0.00003
2',3,4,4',5-- PeCB (PCB-123) 0.00003
2,3,3',4,4',5-HxCB (PCB-156) 0.00003
2,3,3',4,4',5'- HxCB (PCB-157) 0.00003
2,3',4,4',5,5'- HxCB (PCB-167) 0.00003
3,3',4,4',5,5'- HxCB (PCB-169) 0.03
2,3,3',4,4',5,5'- HpCB (PCB-189) 0.00003

1Van Den Berg, et al:The 2005 World Health Organization’s Re-evaluation of Human and Mammalian Toxic Equivalency Factors For Dioxins and Dioxin-like Compounds

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