Effects of tin(IV) chloride and of organotin compounds on aquatic micro-organisms

✍ Scribed by Maria Alejandra Nudelman; Cecilia Carro; N. Sbarbati Nudelman

• Publisher: John Wiley and Sons
• Year: 1998
• Tongue: English
• Weight: 100 KB
• Volume: 12
• Category: Article
• ISSN: 0268-2605
• DOI: 10.1002/(sici)1099-0739(199801)12:1<67::aid-aoc673>3.0.co;2-#

✦ Synopsis

The growth response of the alga Chlorella kessleri and the euglenoid Euglena gracilis has been studied as a model system to determine the effects of a tin salt (SnCl 4 •5H 2 O) and of some organotin (OT) derivatives, namely tetrabutyltin (TeBT), tributyltin (TBT) and tributyltin oxide (TBTO). Abiotic degradation was studied as well. Cells were exposed to a toxicity series (0-50 g/mL ؊ 1 ) for the four chemicals in seven-day bioassays. Both microorganisms are tolerant of the inorganic salt, but growth inhibition was significant for all OT compounds, and especially large for TBT and TBTO. Although C. kessleri and E. gracilis are known to be tolerant towards metals and organic chemicals, the present results show that both are sensitive to organotin compounds: the inhibition of the growth was greater for C. kessleri.