Comparative Study of Ecotoxicological Effect of Triorganotin Compounds on Various Biological Subjects

The toxic and inhibitory effect of 10 triorganotin compounds (triphenlyl-, tribenzyl-, and tributyltins) were determined under standardized conditions on four biological subjects:Tubifex tubifex, Chironomus plumosus, Sinapis albaseeds, and the algaScenedesmus quadricauda.Observed were the mortality ofT. tubifexandCh. plumosusafter 96 hr, the root growth inhibition ofS. albaseeds after 72 hr, and the inhibition of growth, photosynthesis, and chlorophyllacontent ofS. quadricaudaafter 12 days of cultivation. The effect of triorganotins was expressed as LC50values for mortality and EC50values for inhibition. For each subject and observed parameter the rank order of toxicity/or inhibition was arranged.