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Analytical Method: Iron (total) in peaty water

Instruments and Reagents:

Cat.No. 173016  Spectroquant® VIS Spectrophotometer Prove 100 or

Cat.No. 173017  Spectroquant® UV/VIS Spectrophotometer Prove 300 or

Cat.No. 173018  Spectroquant® UV/VIS Spectrophotometer Prove 600 or

Cat.No. 109748  Spectroquant® Photometer NOVA 30 or

Cat.No. 109751  Spectroquant® Photometer NOVA 60 or

Cat.No. 173632  Spectroquant® Colorimeter Move 100

Cat.No. 114946  Rectangular cells 10 mm and/or

Cat.No. 114947  Rectangular cells 20 mm and/or

Cat.No. 114944  Rectangular cells 50 mm
Cat.No. 114549  Spectroquant® Iron Cell Test
Cat.No. 114761  Spectroquant® Iron Test
Cat.No. 100796  Spectroquant® Iron Test
Cat.No. 100731  Sulfuric acid 95 - 97 % for analysis
Cat.No. 109137  Sodium hydroxide solution 1 mol/l for analysis
Cat.No. 109531  MColorpHastTM pH-indicator strips pH 0 - 6
Cat.No. 116754  Water for analysis
 
Sample preparation:
In a glass beaker mix 25 ml of the sample solution with 5 ml sulfuric acid 95 - 97 % and evaporate slowly to dryness on the heating plate. Dissolve the residue in water for analysis and transfer to 25-ml volumetric flask.
Before filling up to the mark with water for analysis, determine the pH of the solution, by using pH- indicator strips. The optimum range is pH 2 - 4; if necessary, adjust with sodium hydroxide solution 1 mol/l. After that fill up to volume with water for analysis and mix well.
 
Analysis:
Determine with the above mentioned test kits.
 
Calculation:
Iron (total) content in mg/l Fe = analysis value in mg/l Fe

Materials

     
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