Table 5.

PCDD/F concentrations in tree fruits, sorted by year of publication.

Reference	Growing environment	Source of PCDD/F	Soil concentration (pg TEQ/g) (dw)	Plant type (part)	n	Mean plant concentration (pg TEQ/g)	Range of plant concentration (pg TEQ/g)
Prinz et al. 1991	Field conditions	Incinerator	670	Plum	2	~ 1.1 (dw)
				Strawberry	2	~ 0.8 (dw)
				Apple	2	~ 1.4 (dw)
Muller et al. 1993	Field conditions	Chlorine–alkaline–electrolysis residues	48 (subsoil)	Pear 2 (washed, whole)	1	25 (fw)
			14,530 (subsoil)	Pear 1 (unprocessed, whole)	2	33 (fw)	20–46
				Pear 1 (washed, peel)	2	123.5 (fw)	105–142
				Pear 1 (washed, pulp)	2	15 (fw)	8–22
				Pear 1 (washed, whole)	2	36 (fw)	27–45
				Pear 1 (wrapped, whole)	2	14 (fw)	11–17
			1,950 (subsoil)	Apple (washed, pulp)	1	8 (fw)
				Apple (washed, peel)	1	46 (fw)
				Apple (washed, whole)	1	14 (fw)

Abbreviations: dw, dry weight; fw, fresh weight.