PCB's IN LAKE TROUT FROM GRAND TRAVERSE BAY, MICHIGAN





Sharyn Howard
School of Science and Natural Resources
Lake Superior State University
Sault Ste. Marie, MI 49783  USA




Abstract. PCB concentrations were analyzed from twelve lake trout
(Salvelinus naymaycush) caught in Grand Traverse Bay, MI.  Two
fillets from each fish were prepared for a total of 24 samples.
One fillet was trimmed-meat only, the other fillet was untrimmed-
meat, skin and fat.  Fish oil was extracted using a modified
version of the procedure by Williams et al (1989) . The samples
were analyzed using high-performance liquid chromatography.
Solutions of 0 ,.2,.4,.6,. 8, and 1 ppm PCB's were also run as
standards.  A standard curve and linear regression curve were
plotted from the standards. It was observed that there was a
difference in PCB concentrations between the trimmed and
untrimmed fillets.  Out of the 24 samples, 5 were above the FDA's
approved limits for PCB's in fish of 2 ppm.




Selected References



Williams, L.L., J.P. Geisy, N. DeGalan, D.A. Verbrugge, D.E.
Tillitt, and G.T. Ankley.  1989. Size and seasonal
variations of PCBs in chinock salmon (Oncorhynchus
twshawytscha) fillets from Lake Michigan, Ludington,
Michigan, USA.  Michigan Sea Grant College Program
MICHU-SG-89-202, Michigan State University, East
Lansing, Michigan, USA.



Mikowski, B.E.  1995.  High performance chromatography as a
screening procedure for determining the total PCB
concentration present in Atlantic Salmon.  Senior
thesis.  Lake Superior State University. Sault Ste.
Marie, Michigan, USA.