Organic impurities in natural potable waters can be related to amino carboxylic acids the most essential property whereof is ability to complex formation with copper (II) cations. Materials: bottled waters, solutions of trilon B- 2 to 5 mg/l, of copper (II) -1.0 mg/cm3, of potassium iodide- ?= 45%. The calibrated dependence between iodine content in the system and the value of optic density measured at wave length 285 nm on UV spectrometer was plotted for quantitative evaluation of processes. Reviewing the data presented in the table one can come to conclusion that when using trilon B in concentrations from 2 to 5 mg/l per TOC, the percentage of reducing of disengagement of iodine amount in the system will consistently rise from 19 to 52% respectively and will be 9.5% per TOC unit, as an average value. Impurities concentration in natural potable bottled waters will be from 0.76 to 6.48 mg/l per TOC; however, their activity in relation to copper (II) differs substantially: from 0.31 to 1.7 being comparable to trilon B. Activity of organic impurities shall be considerably influenced by treatment of initial water by red light.TABLE: Composition of water solutions and iodine content upon interaction with iodic potassium

Properties of organic impurities of potable waters in relation to copper (II) cations

248th National Meeting (2014)

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