Link to U.S. Geological Survey home page.

In cooperation with the U.S. Air Force Aeronautical System Center, Environmental Management Directorate

Data on Occurrence of Selected Trace Metals, Organochlorines, and Semivolatile Organic Compounds in Edible Fish Tissues From Lake Worth, Fort Worth, Texas, 1999

By J.B. Moring

U.S. Geological Survey
Open-File Report 02–016


Document Accessibility: Adobe Systems Incorporated has information about PDFs and the visually impaired. This information provides tools to help make PDF files accessible. These tools convert Adobe PDF documents into HTML or ASCII text, which then can be read by a number of common screen-reading programs that synthesize text as audible speech. In addition, an accessible version of Acrobat Reader 5.0 for Windows (English only), which contains support for screen readers, is available. These tools and the accessible reader may be obtained free from Adobe at http://access.adobe.com/.

pdf (8.70 MB)


Contents

Abstract

Introduction

Sampling and Analytical Approach

Fish Collection

Field Processing of Fish

Data Quality

Sampling Tracking and Disposition

Washing of Equipment

Analyses of Trace Metals and Organic Compounds

References

Figures

1.   Map showing Lake Worth, U.S. Air Force Plant 4, and Naval Air Station, Joint Reserve Base, Carswell Field, Fort Worth, Texas

Tables

1.   Information by species on individual fish samples collected in Lake Worth for the analysis of contaminants in edible tissues
2.   Trace metals analyzed in fish fillets from Lake Worth and minimum reporting levels
3.   Concentrations (wet weight) of selected trace metals in edible fish tissues from Lake Worth
4.   Concentrations (dry weight) of selected trace metals in edible fish tissues from Lake Worth
5.   Organochlorine pesticides and polychlorinated biphenyls (PCBs) analyzed in fish fillets from Lake Worth and minimum reporting levels
6.   Concentrations (wet weight) of selected organochlorine pesticides and polychlorinated biphenyls (PCBs) in edible fish tissues from Lake Worth
7.   Semivolatile organic compounds (SVOCs) analyzed in fish fillets from Lake Worth and minimum reporting levels

Abstract

A public-health assessment conducted for the Texas Department of Health and the Agency for Toxic Substances and Disease Registry concluded that exposure to contaminants through the aquatic food chain is an indeterminate human-health hazard in Lake Worth, Fort Worth, Texas. In 1999, the U.S. Geological Survey, in cooperation with the U.S. Air Force and in collaboration with the Texas Department of Health, collected samples of edible fish tissues from Lake Worth for analysis of selected trace metals, organochlorines, and semivolatile organic compounds to support a human-health risk assessment. Left-side, skin-off fillet samples were collected from 10 individuals each of channel catfish, common carp, freshwater drum (gaspergou), largemouth bass, and white crappie but only from five smallmouth buffalo. The U.S. Geological Survey National Water Quality Laboratory analyzed the samples for 22 trace metals, 40 organochlorine pesticides and polychlorinated biphenyls, and 75 semivolatile organic compounds.

 


[an error occurred while processing this directive]