|
|
| (One intermediate revision by the same user not shown) |
| Line 1: |
Line 1: |
| {{encyclopedia|moderator=Henrik}}TEF (TCDD equivalency factor, toxic equivalency factor), a relative toxicity factor of a PCDD/F or PCB congener as related to TCDD. TEF values vary from 1 to 0.00001 or 0 (Table 4; see also TEq). The latest re-evaluation of TEF values was that by WHO in 1998, and these TEF values have been used in this booklet as WHO-TEF for PCDD/Fs and PCB-TEF for PCBs. TEq = ΣTEFi*Ci, where Ci is the amount (or concentration) of congener i.
| | #REDIRECT [[Toxic equivalency factor]] |
| | |
| '''Table 4. Toxic equivalency factors for all PCDD/Fs and PCBs that have a TEF>0. Other congeners are not supposed to have dioxin-like effects. IUPAC numbers for PCBs are given in parenthesis.'''
| |
| | |
| {| border="2"
| |
| |-
| |
| ! Congener
| |
| ! WHO-TEF
| |
| |-
| |
| | PCDDs
| |
| |
| |
| |-
| |
| | 2,3,7,8-TCDD
| |
| | 1
| |
| |-
| |
| | 1,2,3,7,8-PeCDD
| |
| | 1
| |
| |-
| |
| | 1,2,3,4,7,8-HxCDD
| |
| | 0.1
| |
| |-
| |
| | 1,2,3,6,7,8-HxCDD
| |
| | 0.1
| |
| |-
| |
| | 1,2,3,7,8,9-HxCDD
| |
| | 0.1
| |
| |-
| |
| | 1,2,3,4,6,7,8-HpCDD
| |
| | 0.01
| |
| |-
| |
| | OCDD
| |
| | 0.0001
| |
| |-
| |
| | PCDFs
| |
| |
| |
| |-
| |
| | 2,3,7,8-TCDF
| |
| | 0.1
| |
| |-
| |
| | 1,2,3,7,8-PeCDF
| |
| | 0.05
| |
| |-
| |
| | 2,3,4,7,8-PeCDF
| |
| | 0.5
| |
| |-
| |
| | 1,2,3,4,7,8-HxCDF
| |
| | 0.1
| |
| |-
| |
| | 1,2,3,6,7,8-HxCDF
| |
| | 0.1
| |
| |-
| |
| | 1,2,3,7,8,9-HxCDF
| |
| | 0.1
| |
| |-
| |
| | 2,3,4,6,7,8-HxCDF
| |
| | 0.1
| |
| |-
| |
| | 1,2,3,4,6,7,8-HpCDF
| |
| | 0.01
| |
| |-
| |
| | 1,2,3,4,7,8,9-HpCDF
| |
| | 0.01
| |
| |-
| |
| | OCDF
| |
| | 0.0001
| |
| |-
| |
| | Non-ortho-PCBs
| |
| |
| |
| |-
| |
| | 3,3’,4,4’-TCB (77)
| |
| | 0.0001
| |
| |-
| |
| | 3,4,4’,5-TCB (81)
| |
| | 0.0001
| |
| |-
| |
| | 3,3’,4,4’,5-PeCB (126)
| |
| | 0.1
| |
| |-
| |
| | 3,3’,4,4’,5,5’-HxCB (169)
| |
| | 0.01
| |
| |-
| |
| | Mono-ortho-PCBs
| |
| |
| |
| |-
| |
| | 2,3,3’,4,4’-PeCB (105)
| |
| | 0.0001
| |
| |-
| |
| | 2,3,4,4’,5-PeCB (114)
| |
| | 0.0005
| |
| |-
| |
| | 2,3’,4,4’,5-PeCB (118)
| |
| | 0.0001
| |
| |-
| |
| | 2’,3,4,4’,5-PeCB (123)
| |
| | 0.0001
| |
| |-
| |
| | 2,3,3’,4,4’,5-HxCB (156)
| |
| | 0.0005
| |
| |-
| |
| | 2,3,3’,4,4’,5’-HxCB (157)
| |
| | 0.0005
| |
| |-
| |
| | 2,3’,4,4’,5,5’-HxCB (167)
| |
| | 0.00001
| |
| |-
| |
| | 2,3,3’,4,4’,5,5’-HpCB (189)
| |
| | 0.0001
| |
| |}
| |
| [[category:Dioxin synopsis]]
| |