Hach Digesdahl 23130-20 - Page 85

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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)
4-220 0.500 20.0
10-580 0.400 10.0
25-1500 0.300 5.00
200-11000 0.200 1.00
750-45000 0.100 0.50
Expected Nitrogen
conc. (mg/kg)
Sample
amount (g)
Analysis
Volume (mL)
42-2200 0.500* 10.0*
106-5600 0.400* 5.00*
350-18000 0.300* 2.00*
1000-56000 0.200* 1.00*
4200-220000 0.100* 0.50*
A 2500×
BC×
------------------------ mg/kg Total Ni=
A75×
BC×
----------------- mg/kg TKN=
DIGESTION PROCEDURE FOR SOLIDS, continued
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