DDT in Biota of Paranagua Bay, Southern Brazil: Recent Input and Rapid Degradation

作者：Liebezeit Gerd^*; Brepohl Daniela; Rizzi Juliane; Guebert Flavia; Krome Mats; Machado Eunice; Pijanowska Ursula

来源：Water, Air, and Soil Pollution, 2011, 220(1-4): 181-188.

DOI：10.1007/s11270-011-0745-5

• DDT
• Mussel
• Oyster
• Turtle
• Fish
• Brazil
• Paranagua Bay

The presence of recent dichlorodiphenyltrichloroethane (DDT) inputs is established for Paranagua Bay biota, i.e. bivalves, fish and one sponge. Values ranged from 6.9 to 156.2 ng I DDT pound/g dry weight. Three fish species analysed showed I DDT pound values from 36.8 to 92.1 ng/g dry weight. The highest contents (up to 156.2 ng I DDT pound/g dry weight) were found for mangrove oysters (Crassostrea rhizophorae) at locations affected by sewage discharge from Paranagua City. Turtles as herbivores were not affected by this input with values of 0.7 and 2.2 ng I DDT pound/g dry weight. The areal distribution of samples suggests that usage of DDT is widespread around the bay. Fresh DDT input is degraded to DDE and DDD within approximately 5 months.

• 出版日期2011-9