Analytical methods for the determination of oil carryover from CNG/biomethane refueling stations recovered in a solvent
| Autor: | Ahmad El Masri, Andreas Fischer, Oliver Büker, Karine Arrhenius, Francois Lestremau, Tim Robinson, Hervé Adrien |
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| Přispěvatelé: | Research Institutes of Sweden, Institut National de l'Environnement Industriel et des Risques (INERIS) |
| Rok vydání: | 2020 |
| Předmět: |
Chemical substance
Chromatography 020209 energy General Chemical Engineering 010401 analytical chemistry 02 engineering and technology General Chemistry 01 natural sciences 0104 chemical sciences Working range Matrix (chemical analysis) Biogas [SDE]Environmental Sciences 0202 electrical engineering electronic engineering information engineering Measurement uncertainty Environmental science Gas chromatography Gas compressor Bar (unit) |
| Zdroj: | RSC Advances RSC Advances, Royal Society of Chemistry, 2020, 10 (20), pp.11907-11917. ⟨10.1039/d0ra01399d⟩ |
| ISSN: | 2046-2069 |
| DOI: | 10.1039/d0ra01399d |
| Popis: | Vehicle gas is often compressed to about 200 bar at the refueling station prior to charging to the vehicle's tank. If a high amount of oil is carried over to the gas, it may cause damage to the vehicles; it is therefore necessary to accurately measure oil carryover. In this paper, three analytical methods for accurate quantification of the oil content are presented whereby two methods are based on gas chromatography and one on FTIR. To better evaluate the level of complexity of the matrix, 10 different compressor oils in use at different refueling stations were initially collected and analysed with GC and FTIR to identify their analytical traces. The GC traces could be divided into three different profiles: oils exhibiting some well resolved peaks, oils exhibiting globally unresolved peaks with some dominant peaks on top of the hump and oils exhibiting globally unresolved peaks. After selection of three oils; one oil from each type, the three methods were evaluated with regards to the detection and quantification limits, the working range, precision, trueness and robustness. The evaluation of the three measurement methods demonstrated that any of these three methods presented were suitable for the quantification of compressor oil for samples. The FTIR method and the GC/MS method both resulted in measurement uncertainties close to 20% rel. while the GC/FID method resulted in a higher measurement uncertainty (U = 30% rel.). |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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