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Analytical Method: Copper in soils

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. 114553  Spectroquant® Copper Cell Test
Cat.No. 114767  Spectroquant® Copper Test
Cat.No. 100456  Nitric acid 65 % for analysis
Cat.No. 105432  Ammonia 25 % for analysis
Cat.No. 109532  MColorpHastTM pH-indicator strips pH 7.5 - 14
Cat.No. 116754  Water for analysis
 
Sample preparation:
In a 200-ml Erlenmeyer flask place 10 g of air dried and sieved (mesh 2 mm) sample, with 30 ml water for analysis and 10 ml nitric acid 65 % and heat for 1 hour. After cooling slowly and under swinging add 23 ml ammonia
25 %. The pH - value should be 9 - 10 (check with pH-indicator strips).
 
Filter off the insoluble parts and wash the filter 3 times with water for analysis. Collect the filtrate and the washings in a 200-ml volumetric flask, fill up to volume with water for analysis and mix well.
 
Analysis:
Determine with the above mentioned test kit.
 
Calculation:
Copper content in mg/kg Cu = analysis value in mg/l Cu x 20

Materials

     
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