COMPARATIVE-STUDY OF ECOTOXICOLOGICAL EFFECT OF TRIORGANOTIN COMPOUNDS ON VARIOUS BIOLOGICAL SUBJECTS

The toxic and inhibitory effect of 10 triorganotin compounds (triphenl yl-, tribenzyl-, and tributyltins) were determined under standardized conditions on four biological subjects: Tubifex tubifex, Chironomus pl umosus, Sinapis alba seeds, and the alga Scenedesmus quadricauda. Obse rved were the mortality of T. tubifex and Ch. plumosus after 96 hr, th e root growth inhibition of S. alba seeds after 72 hr, and the inhibit ion of growth, photosynthesis, and chlorophyll a content of S. quadric auda after 12 days of cultivation, The effect of triorganotins was exp ressed as LC(50) values for mortality and EC(50) values for inhibition , For each subject and observed parameter the rank order of toxicity/o r inhibition was arranged. (C) 1997 Academic Press.