Hach Micro Dist Manuel D'utilisation page 16

Method information
Method Sample type
Cyanide-1 Free and
Combined
Cyanide/L
Cyanide-2 Free and
Combined
Cyanide/L in
caustic extract
(1.25 M NaOH)
Cyanide-3 (WAD) Free and Weak
Acid
Dissociable
(WAD)
Cyanide/L
Cyanide-5 Free and
Combined
Cyanide/L in
the presence of
sulfide
Phenolics-1 Phenolics/L
Sulfide-1 Acid-soluble
sulfide
Sulfide-2 Acid-soluble
sulfide/L
16 English
Range Quantity
0.002–100 mg Liquid sample or standard:
6.0 mL or 6 g
Soil or sludge
0.5–50 mg
0.5 to 1.0 g mixed with 5 mL of
deionized water
Note: The amount of cyanide in the
soil or sludge in 6 mL should be
between about 0.012 and 600 μg.
0.002–0.50 mg
0.05–50 mg
0.002–50.0 mg Liquid sample or standard:
6.0 mL or 6 g
Soil or sludge
0.5 to 1.0 g mixed with 5 mL of
deionized water
Adjust to approximately pH
4 with 1 M NaOH or 10%
H SO
2 4
0.2–50 mg/kg Standard:
5.5 mL or 5.5 g
Liquid sample:
1.0 g mixed with 5 mL of
deionized water
Soil or sludge
0.5 to 1.0 g mixed with 5 mL of
deionized water
0.01–10.0 mg Liquid sample or standard:
6.0 mL or 6 g
Soil or sludge
0.5 to 1.0 g mixed with 5 mL of
deionized water
Temperature
120 °C
1
:
130 °C
1
:
120 °C
1
:
1
:
Time
30 min
90 min
30 min