Oceanography

Reagents

• Ammonium molybdate: Dissolve 15g of ammonium molybdate in 500ml of distilled water.
• Sulphuric acid: Add 140 ml of conc. H₂SO₄ to 900 ml distilled water.
• Ascorbic acid solution: Dissolve 27g of ascorbic acid in 500 ml distilled water.
• Potassium - Antimonyl - Tartarate (PAT): Dissolve 0.34 of PAT in 250ml of distilled water.
• Mixed reagent: To prepare 500 ml of mixed reagent, mix together 100 ml ammonium molybdate, 250ml H₂SO₄, 100ml ascorbic acid and 50 ml PAT. Prepare this reagent for use and discard any excess.