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Characterization of the Pesticide Chlordane in Estuarine River Sediments

Y. Ouyanga,*, L.-T. Oub and G. C. Siguac

a Department of Water Resources, St. Johns River Water Management District, P.O. Box 1429, Palatka, FL 32178-1429
b Soil and Water Science Department, University of Florida, Gainesville, FL 32611-0290
c USDA-ARS-STARS, 22271 Chinsegut Hill Road, Brooksville, FL 34601



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  		Fig. 1. Location of the study area showing the Cedar and Ortega rivers watershed and sampling points (circles).

 


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  		Fig. 2. Spatial distribution of kriging-estimated chlordane concentrations (µg/kg).

 


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  		Fig. 3. Total organic carbon (TOC)-normalized chlordane concentrations as a function of distance in the X direction (easting).

 


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  		Fig. 4. Relationships between three chlordane compounds and total chlordane obtained using linear regression and principal axis analysis.

 


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  		Fig. 5. Total chlordane distribution in sediments from the Cedar and Ortega rivers. Chlordane concentrations above the probable effect level (4.79 µg/kg) are displayed in black.

 




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