Encyclopedia of Environmental Science and Engineering, Volume I and II

PCBs AND ASSOCIATED AROMATICS 899

TABLE 31

Concentration of PCDDs and PCDFs in human milk on a wet weight or whole milk basis

Concentration

Population Isomer Mean Range

South Vietnam 2,3,6,8-TCDD 11.4 ND–55

(1970)

2,3,7,8-TCDD 0.68 ND–3.1

South Vietnam 1,2,3,7,8-P 5 CDD 0.44 ND–1.3

(1984) H 6 CDD 3.0 0.7–10.4

1,2,3,4,6,7,8-H 7 CDD 5.3 0.41–21.3

O 8 CDD 39.8 4.2–102.3

2,3,4,7,8-P 5 CDF 0.63 0.13–1.4

H 6 CDF 1.7 0.41–5.0

1,2,3,4,6,7,8-H 7 CDF 0.9 0.13–2.2

2,3,7,8-TCDD 0.039 ND

North Vietnam 1,2,3,7,8-P 5 CDD 0.24 ND–0.11

H 6 CDD 0.59 ND–0.72

1,2,3,4,6,7,8-H 7 CDD 2.8 ND–1.7

O 8 CDD 0.31 ND–6.2

2,3,4,7,8-P 5 CDF 0.32 ND–0.88

H 6 CDF 0.09 ND–0.6

1,2,3,4,6,7,8-H 7 CDF ND–0.32

2,3,7,8-TCDD 0.48 0.33–0.70

Japan† H 6 CDD 0.56 0.26–1.11

H 6 CDD 2.81 1.59–5.07

1,2,3,4,6,7,8-H 7 CDD 5.55 3.96–7.36

O 8 CDD 29.2 20.98–37.41

2,3,7,8-TCDF 0.63 0.19–1.70

2,3,4,7,8-P 5 CDF 1.26 0.81–1.70

1,2,3,4,7,8-H 6 CDF 0.63 0.41–0.85

1,2,3,4,7,8,9-H 7 CDF 0.26 0.07–0.56

O 8 CDF 0.78 3.40–9.40

2,3,7,8-TCDD 0.19 ND–0.38

United States 1,2,3,7,8-P 5 CDD 1.2 ND–6.8

H 6 CDD 2.7 0.3–12.4

1,2,3,4,6,7,8-H 7 CDD 3.3 ND–14.6

O 8 CDD 21 2.4–46.9

2,3,7,8-TCDF 0.34 ND–1.2

2,3,4,7,8-P 5 CDF 1.0 ND–2.9

H 6 CDF 0.68 0.1–1.3

1,2,3,4,6,7,8-H 7 CDF 0.68 ND–2.1

O 8 CDF 2.3 ND–13.5

† The Japanese data have been recalculated from data presented on a liquid basis. The assumption was made

that the liquid content of the milk was an average of about 3.7%—see values reported by Schecter et al., 1987,

reference (76).

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