related study q's

• Reactants in measurement of phosphorus are inorganic phosphorus and ammonium molybdate in the presence of sulfuric acid
• o   U/V method [unreduced, no complexes]:

  • Advantages - simplicity, speed, stability
  • Disadvantages - greater interferences from icterus, hemolysis, lipemia
• o   Colorimetric method [reduced, complexes]:

  •   Advantages - less interferences from icterus, hemolysis, lipemia
  •   Disadvantages – control pH; MUST be acidic for complexes to form