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Total Petroleum Hydrocarbons (TPH) |
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Method
References: U.S. Patent #5,834,655. U.S. Patent #4,992,379. EPO Application #94 302 944. Roberts, R. M. and Khalaf, A. A., Friedel Crafts Alyklation Chemistry: A Century of Discovery, Marcel Dekker, Inc., NY, p. 790 (1984). Schmid, George H., Organic Chemistry, Mosby-Yearbook, Inc., QD251.2S354, p. 935 (1996).
Detection of total petroleum hydrocarbons (TPH) in soil can indicate contamination from leaking underground storage tanks (USTs), petroleum refineries, or other fuel sources.
The RemediAid™ Total Petroleum Hydrocarbon Test Kit 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 Kit 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 sodium sulfate, a drying agent. A pre-measured volume of dichloromethane is then added to the reaction tube. This organic solvent extracts the petroleum hydrocarbons 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 hydrocarbon concentration in the sample. The absorbance of the sample is measured in a portable, battery-powered, LED-based colorimeter and converted to mg/kg hydrocarbon in the soil by use of a formula. |
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| • Click to View MSDS and Kit instructions |
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 Instrumental Kits |
(1) 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
Friedel Crafts |
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Cat# |
| RemediAid (TPH) Starter Kit (No consumables) |
I-9312 |
| | RemediAid (TPH) Starter Kit comes in a plastic case and contains TPH Photometer, pocket scale, 3-channel timer, TPH reaction tube plug/snapper, tip-breaking tool, 2 AA batteries, and instruction booklet. | |
| | RemediAid (TPH) Refill (for use with I-9312) | R-9310 |
| | Refill comes in a cardboard box and contains 16 tests, 80g bottle sodium sulphate, reagent blank ampoule and MSDS. | |
| | Note: R-9310 TPH Refill must be purchased separately from I-9312 | |
| | (1) - Expected dynamic range of the test in soil sample matrix (The instructions include dilution procedures, if an extended range is required.) | |
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Kit Components common to TPH |
| Description |
Cat# |
| | Tip Breaking Tool (1 ea) | A-0079 |
| | Reagent Blank Ampoule Pack (2 ea) | A-0161 |
| | Sodium Sulfate, 80 g bottle | A-0162 |
| | TPH Reaction Tube Plug/Snapper (1 ea) | A-0168 (2) |
| | (2) - Consumption of this accessory is solely dependent on the moisture content of the soil being tested. If the soil being tested has a moisture content above 10%, the bottle of sodium sulphate will be depleted after approximately 10 tests. | |
| | If no shelf life is listed for a product, then the shelf life is at least 2 years. | |
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