فهرس المقالات Dioxovanadium(V)

• حرية الوصول المقاله
  • صفحة الملخص
  • نص كامل
  
  1 - Interaction of Dioxovanadium(V) Ion with Methionine at Different Ionic Strengths
  M. Kia F. Gharib G. Ghasemi
  The dependence on ionic strength of protonation of methionine and its complexation with dioxovanadium(V) isreported in sodium perchlorate solution as supporting electrolyte. The measurements have been performed at 25􀁻C using a combination of potentiometric and spectrop أکثر

  The dependence on ionic strength of protonation of methionine and its complexation with dioxovanadium(V) isreported in sodium perchlorate solution as supporting electrolyte. The measurements have been performed at 25􀁻C using a combination of potentiometric and spectrophotometric techniques. The overall analysis of the presentand the previous data dealing with determination of stability constants at different ionic strengths allowed us toobtain a general equation, by which a formation constant determined at a fixed ionic strength can berecalculated, with a good approximation for another ionic strength in the range of 0.1 0.7 mol dm-3. تفاصيل المقالة
• حرية الوصول المقاله
  • صفحة الملخص
  • نص كامل
  
  2 - Study on the Interaction of Dioxovanadium(V) with Nitrilotriacetic Acid at Different Ionic Strengths by Using Extended Debye-Hiickel Equation
  K. Zare S. Rezaienejad
  In this research complexation of dioxovanadium(V) with nitrilotriacetic acid (NTA) at differentionic strengths (0.1 to 1.0 mol dm-3) of sodium perchlorate as supporting electrolyte and pH rangeof 1.00-2.50 at 25 °C has been investigated by a combination of potentiom أکثر

  In this research complexation of dioxovanadium(V) with nitrilotriacetic acid (NTA) at differentionic strengths (0.1 to 1.0 mol dm-3) of sodium perchlorate as supporting electrolyte and pH rangeof 1.00-2.50 at 25 °C has been investigated by a combination of potentiometric and UVspectrophotometric measurements. Stability constants of two species, V0211L- and VO2H2L havebeen calculated. Ionic strength dependence semi-empirical parameters for the dissociation andstability constants were derived on the basis of extended Debye-Htickel type equation. تفاصيل المقالة