Hach Digesdahl 23130-20 - Page 83

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Iron, 1,10 Phenanthroline (Method 8008)
A = mg/L reading from instrument
B = g sample amount from table
C = mL analysis volume from table
Iron, Ferrozine (Method 8147)
A = mg/L reading from instrument
B = g sample amount from table
C = mL analysis volume from table
Expected Fe
conc. (mg/kg)
Sample
amount (g)
Analysis
Volume (mL)
12-700 0.500 20.0
35-1700 0.400 10.0
85-4500 0.300 5.00
650-35000 0.200 1.00
2500-140000 0.100 0.50
Expected Fe
conc. (mg/kg)
Sample
amount (g)
Analysis
Volume (mL)
6-300 0.500 20.0
15-800 0.400 10.0
40-2000 0.300 5.00
300-15000 0.200 1.00
1200-65000 0.100 0.50
A 2500×
BC×
------------------------ mg/kg Total Fe=
A 2500×
BC×
------------------------ mg/kg Total Fe=
DIGESTION PROCEDURE FOR SOLIDS, continued
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