# Commission Regulation (EU) 2017/644 of 5 April 2017 laying down methods of sampling and analysis for the control of levels of dioxins, dioxin-like PCBs and non-dioxin-like PCBs in certain foodstuffs and repealing Regulation (EU) No 589/2014 (Text with EEA relevance), Appendix: WHO-TEFs for human risk assessment based on the conclusions of the World Health Organisation (WHO) 0151 International Programme on Chemical Safety (IPCS) expert meeting which was held in Geneva in June 2005

Extent: E+W+S+N.I.

Abbreviations used: ‘T’ = tetra; ‘Pe’ = penta; ‘Hx’ = hexa; ‘Hp’ = hepta; ‘O’ = octa; ‘CDD’ = chlorodibenzodioxin; ‘CDF’ = chlorodibenzofuran; ‘CB’ = chlorobiphenyl.
Congener
TEF value
Congener
TEF value
Dibenzo-p-dioxins (‘PCDDs’)
‘Dioxin-like’ PCBs
Non-ortho PCBs + Mono-ortho PCBs
2,3,7,8-TCDD
1
1,2,3,7,8-PeCDD
1
Non-ortho PCBs
1,2,3,4,7,8-HxCDD
0,1
PCB 77
0,0001
1,2,3,6,7,8-HxCDD
0,1
PCB 81
0,0003
1,2,3,7,8,9-HxCDD
0,1
PCB 126
0,1
1,2,3,4,6,7,8-HpCDD
0,01
PCB 169
0,03
OCDD
0,0003
Dibenzofurans (‘PCDFs’)
Mono-ortho PCBs
2,3,7,8-TCDF
0,1
PCB 105
0,00003
1,2,3,7,8-PeCDF
0,03
PCB 114
0,00003
2,3,4,7,8-PeCDF
0,3
PCB 118
0,00003
1,2,3,4,7,8-HxCDF
0,1
PCB 123
0,00003
1,2,3,6,7,8-HxCDF
0,1
PCB 156
0,00003
1,2,3,7,8,9-HxCDF
0,1
PCB 157
0,00003
2,3,4,6,7,8-HxCDF
0,1
PCB 167
0,00003
1,2,3,4,6,7,8-HpCDF
0,01
PCB 189
0,00003
1,2,3,4,7,8,9-HpCDF
0,01
OCDF
0,0003

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Source: https://www.legislation.gov.uk/eur/2017/644/annex/III/appendix (the official version)
Page: https://openlegislation.uk/eu-regulation-2017-644/annex-III/appendix
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.