Accession Number:

ADA199368

Title:

Marine Microcosm Experiments on Effects of Copper and Tributylin-Based Antifouling Paint Leachates

Descriptive Note:

Final rept. Oct 1980-Jun 1983

Corporate Author:

NAVAL OCEAN SYSTEMS CENTER SAN DIEGO CA

Personal Author(s):

Report Date:

1988-06-01

Pagination or Media Count:

51.0

Abstract:

A broad spectrum of marine plants and animals were excluded from flowthrough seawater microcosms by chronic exposures to TBTO tributyltin derived from antifouling paints. Rapid recovery of leachate-treated microcosms demonstrated that residual organotins were depurated quickly from sediments and or had low toxicity. Community metabolic studies showed that the net impact on organic productivity of bottom-living harbor organisms would probably be minimal at sub-microgramL TBTO concentrations. Gobiid fish and sea cucumbers experienced significant uptake of organotin-Sn over 2- to 3-month exposures to 0.8 microgram organotin-SnL. Sediments took up organotin-Sn at a nearly constant rate during a 3-month exposure to 0.8 microgram organotin-SnL, and rapidly released about 50 percent of absorbed tin in a 3-month depuration period. Two species of coral were found to be very sensitive indicators of total organotin concentrations. Toxic responses of corals indicated that, on a molar basis, TBTO-Sn was at least 10 times more toxic than copper. Keywords Antifouling paint, Organotin paint leachates, Marine microcosms, Benthic organisms, Harbor pollutants, Tributyltin. JES

Subject Categories:

  • Coatings, Colorants and Finishes

Distribution Statement:

APPROVED FOR PUBLIC RELEASE