TPH (Total Petroleum Hydrocarbons)
TPH (Total Petroleum Hydrocarbons)
Page 2 of 12
TPHSoil_None_Other_IMM_Eng_Ody.fm
1. Weigh out 10 g of soil
in the plastic weighing
boat.
2. Carefully pour the
soil into an extraction
vial.
3. Use the 5-gram scoop
to add one scoop of
sodium sulfate to the
extraction vial.
4. Use the graduated
cylinder to transfer 10 mL
of Soil Extractant into the
extraction vial.
5. Cap the extraction
vial tightly and shake
vigorously for
one minute.
6. Allow to settle for at
least one minute.
Carefully open the
extraction vial.
7. Using the disposable
bulb pipet, withdraw
1.0–1.5 mL from the
liquid layer at the top of
the extraction vial.
Transfer it into the
filtration barrel (the
bottom part of the filtering
assembly into which the
plunger inserts).
Note: Do not use more than
1.5 mL. The bulb is marked in
0.25-mL increments
8. Insert the filtration
plunger into the filtration
barrel. Press firmly on the
plunger until the sample
extract is forced upward
into the center of the
plunger.
Use the resultant filtrate
for the immunoassay in
theImmunoassay Procedure
for Soil Extracts and Water
Samples on page 3.
Note: It may be necessary to
place the filtration assembly on
a table and press down on the
plunger.
Soil Extraction Procedure
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