Research on regulation of releasing concentration of selenium-supplement cup and its relative influential factors

  Objective   To research the regulation and influential factors of selenium-releasing concentration in selenium-supplement cup.

  Methods   To screen out the formula of selenium-supplement reagent, combine the reagent and instrument to adjust the concentration of selenium and search for the suitable radius of the instrument and select the appropriate dose of the reagent.

  Results   Under following circumstances, water temperature 20-100℃, turbidity 3-5 degree, pH 6.5-8.5, usual cations and anions in water in accordance with the state standard, the concentration of selenium in water is controlled within 30-46 μg/L.

  Conclusion   By checking out water quality, the filtering water supplement cup accords with the state drinking-water sanitary standard and the concentration of selenium tallies with the state mineral water criteria.