Determination of Source, Amount, and Area of Pesticide Pollution in some Texas Bays
This study was initiated to determine the source, amount, and area of pesticide contamination within some Texas bays, including Galveston Bay. The commercial oyster (Crassostrea virginica) was used as the indicator organism. Whole oysters were prepared for analysis by electron capture gas liquid chromatography. Analyses were made for the following chlorinated hydrocarbons: Aldrin, BHC, Dieldrin, DDD, DDE, DDT, Endrin, Heptachlor epoxide, Lindane, and Methoxychlor. The estimated crop land within each watershed being sampled was determined. Approximate pounds of each pesticide applied per year were determined to pinpoint areas of high application.