Determination of Diesel Fuel and Motor Oil in Water and Wastes by a Modified Diesel-Range Organics Total Petroleum Hydrocarbon Method
| Autor: | William M. Draper, Frank J. Baumann, S Kusum Perera, Joginder S. Dhaliwal |
|---|---|
| Rok vydání: | 1996 |
| Předmět: |
Pharmacology
chemistry.chemical_classification Chromatography business.product_category Chemistry business.industry Fuel oil complex mixtures Analytical Chemistry law.invention Diesel fuel chemistry.chemical_compound Petroleum product Hydrocarbon law Environmental Chemistry Flame ionization detector Petroleum Total petroleum hydrocarbon business Agronomy and Crop Science Motor oil Food Science |
| Zdroj: | Journal of AOAC INTERNATIONAL. 79:508-519 |
| ISSN: | 1944-7922 1060-3271 |
| DOI: | 10.1093/jaoac/79.2.508 |
| Popis: | The American Petroleum Institute method for determination of diesel-range total petroleum hydrocarbon (TPH) by gas-liquid chromatography with flame ionization detection was modified to allow simultaneous determination of motor oil. Motor oil elutes as a broad hump of unresolved alkanes and can be distinguished readily from diesel fuel and other fuel oils by its profile. The boiling point ranges for No. 2 diesel fuel and motor oil are C{sub 10{minus}} C{sub 21} and C{sub 21}-C{sub 38}, respectively, and these ranges define TPHs in diesel fuel (TPH-D) and motor oil (TPH-M). By this convention, less than 6% of No. 2 diesel is characterized as TPH-M, and less than 9% of motor oil is quantitated as TPH-D. Inlet discrimination was observed when motor oil was injected with a splitless injector. Accurate motor oil quantitation with splitless sample introduction requires calibration with the product or triacontane, which has a similar response factor. Detector response to motor oil (and other petroleum products) and a homologous series of n-alkanes was nearly constant when on-column injection was used. Instrument detection limit for motor oil was about 0.5 {mu}g (splitless injection, total area under the curve), and the widest linear range (up to 100 {mu}g) was obtained bymore » subtracting the solvent chromatogram. Procedures for isolation of motor oil from oil-in-water (O/W) and water-in-oil (W/O) emulsions are described. Method detection limits for diesel fuel and motor oil in purified water were 0.041 and 1.5 mg/L, respectively. 11 refs., 6 figs., 6 tabs.« less |
| Databáze: | OpenAIRE |
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