Hach Digesdahl 23130-20 - Page 69

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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)
25-1400 0.250 20.0
60-3500 0.200 10.0
160-9300 0.150 5.00
1200-70000 0.100 1.00
Expected Fe
conc. (mg/kg)
Sample
amount (g)
Analysis
Volume (mL)
11-650 0.250 20.0
30-1600 0.200 10.0
75-4300 0.150 5.00
560-32000 0.100 1.00
A 2500×
BC×
------------------------ mg/kg Total Fe=
A 2500×
BC×
------------------------ mg/kg Total Fe=
DIGESTION PROCEDURE FOR OILS, continued
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