Gulf Coast environmental issues are highlighted in several papers being presented at the national meeting of the American Chemical Society, the world's largest scientific society, in New Orleans, Aug. 22 - 26. Subjects include toxic compounds in Gulf oysters, how weather affects ozone levels in the region, and the quality of Mississippi River water. All papers are embargoed until the time of presentation, unless otherwise noted.
Toxic Compounds in Oysters - Tributyltin (TBT) - a biocide used primarily on ship hulls, docks and buoys to guard against the growth of barnacles, algae and other marine organisms - is highly toxic to crustaceans and can retard growth in oysters. Federal regulations adopted in 1988 restricted the use of TBT-paint on most ships less than about 50 feet in length, and set standards for the amount of TBT that can leach from the paint into the water. Researchers at Texas A&M University have found that oysters from the Gulf of Mexico have detectable levels of TBT, probably from uptake or ingestion of sediments, ship yard wastes and TBT-paints used on larger vessels. (J. Sericano - Texas A&M University, College Station, Texas; AGRO 59; Monday, Aug. 23, 2:45 p.m.; Convention Center, Room 218. See page 67 in the final program.)
How Weather Affects Ozone Levels in Louisiana and Texas - Heat, humidity and
reduced air circulation are well known to residents of Gulf Coast states. These
weather patterns, combined with pollution from the urban and industrial areas,
can cause ozone levels to soar, particularly from April through October. New
Orleans is an exception. The city generally enjoys good air movement, which
helps keep ozone levels from becoming excessive. Specific atmospheric phenomena
- including some local meteorological conditions - that contribute to high ozone
levels will be the subject of this presentation. (S. Hsu - Louisiana State
University, Baton Rouge, La.; ENVR 67; Wednesday, Aug. 25, 9:25 a.m.; Conv
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Contact: Charmayne Marsh
y_marsh@acs.org
202-872-4445
American Chemical Society
25-Aug-1999