KORN ET AL.: UPTAKE AND DEPURATION OF '"C-BENZENE 



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Figure 2.-Mean '-"C-benzene depuration from tissues (nl/g wet weight) of striped bass; sample number in Table 4. ND = nondetectable 

 level (see Methods). The concentrations on the Y-axis are calculated from total '^C radioactivity and may include metabolites of 

 benzene. 



predominantly in tissues that exhibit a high lipid 

 content or represent apparent major metabolic 

 sites. Thus, lipid-rich mesenteric fat and brain 

 tissues had high accumulations; while liver, gall- 



bladder, intestine, and colon (which are tissues 

 associated with the metabolic breakdown and 

 excretion of benzene) also accumulated benzene to 

 higher levels (Table 3). 



Table 4. -Percent residues' remaining in northern anchovy and striped bass after termination of 48-h exposure to benzene. (Sample 



sizes in parentheses.) 



'Actual nanoliters per gram tissue residues = (benzene in nanoliters) / (tissue wet weight in grams) (mean tissue residue) / 48-h mean 

 tissue residue) (100% residue). 

 'The initial mean benzene seawater concentrations (ul/liter) were 0.11 for test 2a, 0.0097 for test 2b, and 0.088 for test 4. 

 ^ND = nondetectable. 



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