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Abstract

Benzene, with initial concentrations of 100 and 50 mg per liter, was dosed in duplicates into four compartments of a small pond. The decrease of chemical concentration in the water was exponential with a mean half-life of 4.7 +- 0.9 days. Following benzene application, the phytoplankton density and diversity slightly increased relative to the controls. Both concentrations were lethal for the daphnids present. During 24 hr in-vitro tests with Daphnia pulex (initial benzene concentrations <50 mg per liter), a direct correlation between mobility and decreasing chemical concentration was observed.

Additional information

Authors: LAY J P, GESELLSCHAFT FUER STRAHLEN- UND UMWELTFORSCHUNG MBH MUENCHEN, NEUHERBERG (GERMANY);SCHAUERTE W, GESELLSCHAFT FUER STRAHLEN- UND UMWELTFORSCHUNG MBH MUENCHEN, NEUHERBERG (GERMANY);PEICHL L, GESELLSCHAFT FUER STRAHLEN- UND UMWELTFORSCHUNG MBH MUENCHEN, NEUHERBERG (GERMANY);KLEIN W, GESELLSCHAFT FUER STRAHLEN- UND UMWELTFORSCHUNG MBH MUENCHEN, NEUHERBERG (GERMANY);KORTE F GESELLSCHAFT FUER STRAHLEN- UND UMWELTFORSCHUNG MBH MUENCHEN, NEUHERBERG (GERMANY), GESELLSCHAFT FUER STRAHLEN- UND UMWELTFORSCHUNG MBH MUENCHEN, NEUHERBERG (GERMANY)
Bibliographic Reference: ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY, VOL. 10, PP. 218-227
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