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Lipid Methodology and Pollutant Normalization Relationships for Neutral Nonpolar Organic Pollutants by Robert C. Randall; David R. Young; Henry Lee II; Scott F. Echols is a Environmental Science article available to read on EtoBox.

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This work compares the ability of hexane and chloroform with methanol (C/M) to extract lipid, polychlorinated biphenyls (PCBs), and p,pЈ-DDE from white croaker (Geneonus lineatus) muscle tissue. Hexane extracted on average 25% of the lipid and 73% of the PCB congeners that were extracted by C/M. Both solvents extracted similar quantities of p,pЈ-DDE. Consequently, PCB and p,pЈ-DDE lipid-normalized concentrations using hexane values were 2.9 and 3.9 times greater than with C/M values, and greater than fivefold differences are possible using hexane lipid values with C/M pollutant values. Because the solvents primarily extract different lipid pools, the results conceivably approximate the largest lipid-normalized pollutant concentration differences obtainable using common solvents. The differences suggest that lipid-normalized pollutant concentrations in fish muscle tissue will vary among studies without a standardized total lipid method, but more research is required to better identify complex neutral pollutant and lipid relationships before a final standard methodology can be selected. In the interim, we recommend that the Bligh-Dyer method with C/M be used to obtain total lipid for

Who reads Lipid Methodology and Pollutant Normalization Relationships for Neutral Nonpolar Organic Pollutants?

Author

Robert C. Randall; David R. Young; Henry Lee II; Scott F. Echols

Publisher

John Wiley and Sons; Wiley (John Wiley & Sons); Wiley-Blackwell; Wiley; Research Square (ISSN 0730-7268)

Published

1998

Language

EN

Field

Environmental Science (Physical Sciences)