Hach Micro Dist Manuel D'utilisation page 17

Method Sample type
Ammonia-1: N/L
Phenate
Method/ISE
Ammonia-2: N/L
Nesslerization
Method
Tritium-1 Volatile tritiated
compounds
Note: If the
sample is primarily
oil, do not distill,
but count directly
with the
scintillation
counter.
1
Refer to Distill a solid sample
Trapping solutions
Methods not shown do not use a trapping solution.
Method
Cyanide-1
Cyanide-2
Cyanide-3 (WAD)
Cyanide-5
Sulfide-1
Sulfide-2
Ammonia-1: Phenate
Method/ISE
Ammonia-2:
Nesslerization Method
1
Other concentrations of standardized solution can be used. Adjust the amount added to each tube accordingly.
Range
0.010–2.0 mg
0.010–2.0 mg
—
on page 23 to identify the best weight of sample to add to each tube.
1
Trapping solution
1.5 mL or 1.55 g of 1.00 M standardized
NaOH solution
1.5 mL or 1.55 g of trapping solution
2.0 mL or 2.0 g of 0.043 M zinc acetate
solution
1.5 mL or 1.55 g of 1.00 M standardized
NaOH solution
1.0 mL or 1.0 g of 0.016 M standardized
sulfuric acid solution
2.0 mL or 2.0 g of 0.13 M boric acid
solution
Quantity
Liquid sample or standard:
6.0 mL or 6 g
1
Soil or sludge :
0.5 to 1.0 g mixed with 5 mL of
deionized water
Liquid sample or standard:
6.0 mL or 6 g
1
Soil or sludge :
0.5 to 1.0 g mixed with 5 mL of
deionized water
Liquid sample or standard:
6.0 mL or 6 g
Preparation
Dissolve 0.80 g of PbCO
1.00 M standardized NaOH solution.
Combine:
• 8.78 g zinc acetate dihydrate
• 0.10 g concentrated HCl
• 880.0 g deionized water
• 43.2 g of a 37% formaldehyde
solution
Mix well until dissolved.
Dissolve 8.0 g of boric acid in 995.0 g of
deionized water.
Temperature Time
120 °C 30 min
120 °C 90 min
—
in 1 L of
3
—
—
English 17