除草剤PCPの浅海水産生物に対する毒性-IV

Abstract

A test for the toxicity of pentachlorophenate (PCP) to a shell-fish, Venerupis philippinarum, was carried out under a continuous supply of PCP-containing sea water, since it was found in a previous work1) that the PCP concentration of sea water was decreased remarkably when the shell-fish were kept alive. Furthermore, a test was made of the toxic effect of PCP-containing mud on the shell-fish. Data presented here revealed that when PCP was constantly supplied, the level as low as 0.1 ppm was still lethal to the shell-fish. The amount of PCP adsorbed on an estuary mud as much as 8mg/kg wet mud was found not toxic to the shell-fish at 23°C, but toxic when the amount was as high as 23mg/kg.