Question

Determination of total phosphorus by stannous chloride method

Answer 1

Explanation:

Selection depends largely on the concentration range of orthophosphate. The vanadomolyb- dophosphoric acid method (C) is most useful for routine analysis in the range of 1 to 20 mg P/L. The stannous chloride method (D) or the ascorbic acid method (E) is more suited for the range of 0.01 to 6 mg P/L.