Analytical Method: Iron (total) in plant material

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. 114896  Spectroquant® Iron Cell Test*
Cat.No. 114761  Spectroquant® Iron Test
Cat.No. 100796  Spectroquant® Iron Test
Cat.No. 100456  Nitric acid 65 % for analysis
Cat.No. 100731  Sulfuric acid 95 - 97 % for analysis
Cat.No. 100519  Perchloric acid 70 % for analysis
Cat.No. 116754  Water for analysis
   
*not compatible with Move 100
   
Sample preparation:
Ground the plant material finely and pass through a sieve (mesh 0.4 - 0.7 mm) and dry the material at 105 °C for 3 hours.
Add 1.0 g of the dried material to a mixture of 1.5 ml nitric acid 65 %, 0.5 ml perchloric acid 70 %, 1 ml sulfuric acid 95 - 97 % and heat until white fumes are envolved (fume cupboard!). Dissolve the residue, after cooling, in water for analysis and fill up to the mark in a 100-ml standard volumetric flask and mix well.
 
Analysis:
Determine with the above mentioned test kits.
 
Calculation:

Iron (total) content in mg/kg Fe  =   analysis value in mg/l Fe x 100
weight of sample in g


 

Materials

     
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