Methods X-ray-fluorescence analysis, AAS, gravimetries, the thermo-gravimetry which are differential-scanning calorimetries, titrymetries, spectrophotometries, photocolorimetries, X-ray crystal analysis study solubility Ni(II) in systems Ni(II)–NaOH–H 2O , Ni(II)–NH 3–H 2O and Ni(II)–NaOH–NH 3–H 2O . Residual concentration Ni(II) in modelling solutions are defined, is created simulation model of systems Ni(II)–NaOH–H 2O , Ni(II)–NH 3–H 2O and Ni(II)–NaOH–NH 3–H 2O and conditional quality performance of the spent solution s of the etching are valuing . The composition of sediments is exploring , possibility of existence of separate forms of complexes of nickel in a solution depending on pH a solution is theoretically estimated. Correlation between concentration of various forms of nickel complexes and concentration of hydroxide ions and ammonia is carried out at room temperatures. Constants ofequilibriumsof nickel coordination compound sarecalculated .
гидроксокомплексы никеля, аммиакатные комплексы никеля, отработанные растворы травления, управление качеством, hydroxidecomplexes of nickel, ammoniacomplexes of nickel, spent solutions of the etching, qualitymanagement
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