Separation and Detection of Hydrocarbons and Gasoline in Automotive Engine Oil Using a Teflon® AF2400-coated Golddeposited Surface Plasmon Resonance-based Glass Rod Sensor
| Autor: | Ei Uchiyama, Ryoji Kajiya, Masaru Mitsushio, Sadafumi Nakatake, Toshifumi Yoshidome, Morihide Higo |
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| Rok vydání: | 2018 |
| Předmět: |
chemistry.chemical_classification
010401 analytical chemistry 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Analytical Chemistry Overlayer law.invention Hydrocarbon chemistry Chemical engineering Crankcase dilution law Gasoline Surface plasmon resonance 0210 nano-technology Porosity Layer (electronics) Light-emitting diode |
| Zdroj: | Analytical Sciences. 34:1085-1091 |
| ISSN: | 1348-2246 0910-6340 |
| Popis: | A gold (Au)-deposited surface plasmon resonance (SPR)-based glass rod sensor that is coated with an α-mercaptoethyl-ω-methoxy polyoxyethylene (PEG thiol) layer (approximately 13 nm thick) and a Teflon AF2400 overlayer (12 μm thick) was used to detect the hydrocarbon and gasoline contents of automotive engine oil. Hydrocarbons and gasoline present in the engine oil penetrate through the porous Teflon layer and accumulate in the PEG thiol layer, and are then detected using the SPR sensor. The refractivities of the selective layers that contain a hydrocarbon on the Au-deposited glass rod sensor were estimated from the sensor responses when using light-emitting diodes (LEDs) with various operating wavelengths as light sources. Gasoline concentrations up to 10%, w/w in commercial engine oil can be measured directly using this sensor when it is coated with the selective layers. The responses of an SPR-based optical waveguide sensing system using Au films coated with identical selective layers were also measured. The results demonstrate the value of the Au-deposited SPR glass rod sensor coated with the selective layers for the detection of the gasoline content and fuel dilution of automotive engine oil. |
| Databáze: | OpenAIRE |
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