Hach Digesdahl 23130-20 Instrument Manual page 56

DIGESTION PROCEDURE FOR AQUEOUS LIQUIDS,
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Lead, Dithizone (Method 8033)
Expected Pb
conc. (µg/L)
0.1-5.0
0.4-20
1.5-80
15-800
150-8000
×
A 25
----------------- = µg/L Total Pb
×
B C
A = µg/L reading from instrument
B = mL sample amount from table
C = mL analysis volume from table
Manganese, PAN (Method 8149)
Expected Mn
conc. (mg/L)
0.05-2.1
0.2-8.7
0.8-35
8-350
80-3500
×
A 2500
mg/L Total Mn
----------------------- - =
×
B C
A = mg/L reading from instrument
B = mL sample amount from table
C = mL analysis volume from table
Sample
amount (mL) Volume (mL)
40.0
20.0
10.0
5.00
1.00
Sample
amount (mL) Volume (mL)
40.0
20.0
10.0
5.00
1.00
47
continued
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Analysis
Dilute to
20.0 250 mL
10.0 250 mL
5.00 250 mL
1.00 250 mL
0.50 250 mL
Analysis
Dilute to
20.0 25.0 mL
10.0 25.0 mL
5.00 25.0 mL
1.00 25.0 mL
0.50 25.0 mL
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