Table 3. Concentrations of 2,3,7,8-TCDD measured in selected 

 organisms and nonbiological materials collected from various 

 locales. All values are in parts-per-tril 1 ion (ng/kg) fresh weight, 



Ecosystem, taxonomic group, 

 collection locale, year of 

 collection, species, tissue, 

 and other variables 



Concentration 

 (ppt) 



Reference 



AQUATIC ORGANISMS 



Amphi bi ans 



Seveso, Italy, 1978 

 Toad, Bufo sp., whole 200 



Mol luscs 



South Vietnam, during military 

 defoliation operations with 2,4,5-T 



Various species, whole Max. 810 



Fish 



Panel li et al . 1980c 



Ramel 1978 



Massachusetts, 1983 

 Lake Winthrop 

 Muscle with skin 

 Brown bullhead, 

 Ictalurus nebulosus 



25 



ND 



Other fish species 

 Other bodies of water (5) 

 Muscle with skin, 8 spp. 

 Missouri , 1982 

 Spring River 

 Whole fish 

 Fillets 

 Meremac River 

 Whole 

 Missouri , 1981 



Spring River, whole 



Distance, in km downstream from 



hexachlorophene manufacturing facility 



1 19 



5 37 



9 36 



74 1 



NO 



26 

 18 



78 



Anon. 1984 



Powell 1984 



Kleopfer and Zirschky 

 1983 



111 



0.8 



10 



