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Analytical Method: Nickel (total) in effluents (Photometry, DIN decomposition)

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. 114554  Spectroquant® Nickel Cell Test
Cat.No. 114785  Spectroquant® Nickel Test
Cat.No. 100456  Nitric acid 65 % for analysis
Cat.No. 107209  Hydrone peroxide 30 % (Perhydrol®) for analysis
Cat.No. 109137  Sodium hydroxide solution 1 mol/l
Cat.No. 109535  MColorpHastTM Universal Indicator strips pH 0 - 14
Cat.No. 116754  Water for analysis
 
Sample preparation:
Place 25 ml sample in a 600-ml beaker along with 5 ml 65 % nitric acid and 5 ml Perhydrol®, mix and slowly evaporate, almost to dryness, on a heating plate. Dissolve the residue in water for analysis and transfer to a 25-ml volumetric flask.
Measure the pH immediately using Universal indicator strips 0 - 14 and adjust to pH 3 - 7, if necessary, using 1 mol/l sodium hydroxide solution. Only now make up to the mark with water for analysis and mix.
 
Analysis:
Determine with the above mentioned test kits
 
Calculation:
Nickel (total) content in mg/l Ni = analysis value in mg/l Ni

Materials

     
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