Hach Digesdahl 23130-20, Instrument Manual

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48
Nickel, PAN (Method 8150)
A = mg/L reading from instrument
B = mL 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 = mL sample amount from table
C = mL analysis volume from table
Expected Ni
conc. (mg/L)
Sample
amount (mL)
Analysis
Volume (mL)
Dilute to
0.05-3 40.0 20.0 25.0 mL
0.2-12 20.0 10.0 25.0 mL
0.8-47 10.0 5.00 25.0 mL
8-470 5.00 1.00 25.0 mL
80-4700 1.00 0.50 25.0 mL
Expected
Nitrogen
conc. (mg/L)
Sample
amount (mL)
Analysis
Volume (mL)
Dilute to
0.5-28 40.0 10.0* 25.0 mL*
2-112 20.0 5.00* 25.0 mL*
11-560 10.0 2.00* 25.0 mL*
45-2250 5.00 1.00* 25.0 mL*
425-22500 1.00 0.50* 25.0 mL*
A 2500
×
B C
×
------------------------ mg/L Total Ni =
A 75
×
B C
×
-----------------
mg/L TKN
=
DIGESTION PROCEDURE FOR AQUEOUS LIQUIDS,
continued
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