TOXIC PROPERTIES OF SODIUM THIOPHOSPHATE AND ITS COMPLEX WITH IRON(II) WHEN ESTIMATING WATER QUALITY BY MEANS OF MODEL TEST REACTION OF LECITHIN PEROXIDAL OXIDATION AND BACTERIAL TEST SYSTEM ECOLUM
Abstract
Three model systems have been used for evaluating properties of aquatic environment ingredients which are capable to cause its toxicity. Formation of complex between sodium thiophosphate and Fe2+ ions has been confirmed by means of UV spectroscopy. An effect of sodium thiophosphate, Fe2+ ions and their complex on the intensity of lecithin spontaneous oxidation in aqueous medium has been shown in experimental conditions. The complex of sodium thiophosphate with Fe2+ ions has been found to cause a significant increase in bioluminescence intensity of “Ecolum” bacterial test system. Thus, the presence of iron(II) ions, sulfur- and phosphorus-containing organic compounds in the aqueous medium leads to a change in total redox balance which plays an important role in forming toxic properties of aquatic environment.
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