Following the method outlined in "Journal of Chemical Education Vol. 71 pg 323-324, 1994" (including a number of changes for practical use), this investigation has set out to:

Create a practical method sheet (with results) which can be used by subsequent courses (e.g. BSc yr2 and Environmental Chemists).

The practicals involve reduction by Ascorbic acid, complexation with 1,5 Diphenyl carbazide and colorimetric techniques (spectrophotometry).