Hach Digesdahl 23130-20 - Page 71

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Nickel, PAN (Method 8150)
A = mg/L reading from instrument
B = g sample amount from table
C = mL analysis volume from table
Nitrogen TKN (Method 8075)
*These are guidelines only. See the spectrophotometer procedure manual.
A = mg/L reading from instrument
B = g sample amount from table
C = mL analysis volume from table
Expected Ni
conc. (mg/kg)
Sample
amount (g)
Analysis
Volume (mL)
7-470 0.250 20.0
20-1200 0.200 10.0
50-3100 0.150 5.00
350-23000 0.100 1.00
Expected Nitrogen
conc. (mg/kg)
Sample
amount (g)
Analysis
Volume (mL)
85-4500 0.250 10.0*
210-11000 0.200 5.00*
2100-110000 0.100 1.00*
A 2500×
BC×
------------------------ mg/kg Total Ni=
A75×
BC×
----------------- mg/kg TKN=
DIGESTION PROCEDURE FOR OILS, continued
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