Products Catalog

Specification

Detection of total petroleum hydrocarbons ( TPH) in
soil can indicate contamination from leaking under-
ground storage tanks ( USTs) , petroleum refineries, or
other fuel sources.
The RemediAidâ„¢ Total Petroleum Hydrocarbon Test
is a rapid, simple field test for measuring aromatic
petroleum hydrocarbon contamination in soil. The
patented test is based upon the Friedel-Crafts Reaction
with one fundamental difference— the intermediate
that is formed in the solvent is the colored species that
is measured.
The RemediAid Test determines TPH across a
wide range of soil types and petroleum products.
RemediAid allows the user to analyze for specific
fractions, including: BTEX, PAH, diesel fuel, leaded and
unleaded gasoline, weathered gasoline, brent crude,
and lubricating oil.
In the test method, a pre-measured sample of soil is
added to a reaction tube that contains anhydrous sodi-
um sulfate, a drying agent. A pre-measured volume of
dichloromethane is then added to the reaction tube.
This organic solvent extracts the petroleum hydrocar-
bons from the soil sample. In order to remove polar
hydrocarbons and color interferences, the soil extract
is treated with Florisil. Finally, a vacuum-sealed
ampoule, containing aluminum chloride, draws in a
predetermined volume of the hydrocarbon-containing
solvent. The hydrocarbons in the solvent react with
the aluminum chloride to produce a soluble colored
product directly proportional to the petroleum hydro-
carbon concentration in the sample. The absorbance
of the sample is measured in a portable, battery-pow-
ered, LED-based colorimeter and converted to mg/ kg
hydrocarbon in the soil by use of a formula.

Ranges :
Unleaded Gasoline: 40-330 mg/ kg
Weathered Gasoline: 40-320 mg/ kg
Diesel: 60-750 mg/ kg
Brent Crude: 60-680 mg/ kg
Lube Oil: 160-1730 mg/ kg
BTEX: 20-120 mg/ kg
Leaded Gasoline: 40-400 mg/ kg
PAH ( 18 component mixture) : 8-70 mg/ kg
Method: Friedel Crafts