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Resumo:
Sediment samples were taken from seven locations in the
WeIland River in December 1986 and April 1987. The DMSO extracts
of these sediment samples showed a significant (pgenotoxicity study indicated that station
D-l in the WeIland River was contaminated with genotoxic
materials. The genotoxic materials may have induced the observed
increased frequency in chironomid labial plate deformities .
Samples from stations C and D-l, located in a downstream
portion of the river bounded by an industrialized area were
slightly toxic according to -the alkaline phosphatase inhib_ii~ion
component of the 50S chromotest analyses. The toxicity of these
samples was only evident once they had been activated by the 59 (liver extract) mixture.