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Environ Toxicol Chem

Title:		"PAHs, nitro-PAHs, hopanes, and steranes in lake trout from Lake Michigan"
Author(s):		Huang L; Chernyak SM; Batterman SA;
Address:		"Department of Environmental Health Sciences, University of Michigan, Ann Arbor, Michigan, USA"
Journal Title:		Environ Toxicol Chem
Year:		2014
Volume:		33
Issue:		8
Page Number:		1792 - 1801
DOI:		10.1002/etc.2620
ISSN/ISBN:		1552-8618 (Electronic) 0730-7268 (Print) 0730-7268 (Linking)
Abstract:		"The present study examines concentrations and risks of polycyclic aromatic hydrocarbons (PAHs), nitro-PAHs (NPAHs), steranes, and hopanes in lake trout collected in Lake Michigan. A total of 74 fish were collected in 2 seasons at 3 offshore sites. The total PAH concentration (Sigma9 PAH) in whole fish ranged from 223 pg/g to 1704 pg/g wet weight, and PAH concentrations and profiles were similar across season, site, and sex. The total NPAH (Sigma9 NPAH) concentrations ranged from 0.2 pg/g to 31 pg/g wet weight, and carcinogenic compounds, including 1-nitropyrene and 6-nitrochrysene, were detected. In the fall, NPAH concentrations were low at the Illinois site (0.2-0.5 pg/g wet wt), and site profiles differed considerably; in the spring, concentrations and profiles were similar across sites, possibly reflecting changes in fish behavior. In the fall, the total sterane (Sigma5 Sterane) and total hopane (Sigma2 Hopane) levels reached 808 pg/g and 141 pg/g wet weight, respectively, but concentrations in the spring were 10 times lower. Concentrations in eggs (fall only) were on the same order of magnitude as those in whole fish. These results demonstrate the presence of target semivolatile organic compounds in a top predator fish, and are consistent with PAH biodilution observed previously. Using the available toxicity information for PAHs and NPAHs, the expected cancer risk from consumption of lake trout sampled are low. However, NPAHs contributed a significant portion of the toxic equivalencies in some samples. The present study provides the first measurements of NPAHs in freshwater fish, and results suggest that additional assessment is warranted"
Keywords:		"Animals Biota Chrysenes/analysis/chemistry/toxicity Environmental Monitoring/*methods Humans Hydrocarbons, Aromatic/*analysis/chemistry/toxicity Illinois Lakes/*chemistry Phenanthrenes/analysis/chemistry/toxicity Polycyclic Aromatic Hydrocarbons/analysis/;"
Notes:		"MedlineHuang, Lei Chernyak, Sergei M Batterman, Stuart A eng P30 ES017885/ES/NIEHS NIH HHS/ Research Support, U.S. Gov't, Non-P.H.S. 2014/04/26 Environ Toxicol Chem. 2014 Aug; 33(8):1792-801. doi: 10.1002/etc.2620"