Determination of Volatile Fuel Oxygenates in Water by Gas Chromatography–Triple Quadrupole Mass Spectrometry: Effect of Automated Sample Preparation Techniques
| Autor: | Qing Sun, Kai Zhu, Yucan Liu, Min Zhao, Lihua Huang |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
lcsh:Hydraulic engineering
Geography Planning and Development BTEX 010501 environmental sciences Aquatic Science 01 natural sciences Biochemistry Ethylbenzene chemistry.chemical_compound lcsh:Water supply for domestic and industrial purposes lcsh:TC1-978 Sample preparation Oxygenate 0105 earth and related environmental sciences Water Science and Technology lcsh:TD201-500 Chromatography aromatic compounds 010401 analytical chemistry Xylene gasoline additives Toluene 0104 chemical sciences Triple quadrupole mass spectrometer headspace solid–phase microextraction chemistry purge and trap Gas chromatography gas chromatography–triple quadrupole mass spectrometry |
| Zdroj: | Water Volume 12 Issue 8 Water, Vol 12, Iss 2266, p 2266 (2020) |
| ISSN: | 2073-4441 |
| DOI: | 10.3390/w12082266 |
| Popis: | Considering the adverse effects of gasoline additives and aromatic compounds on the quality of the water supply and the ecological environment of the water, a methodology, with short chromatographic separation time (22.5 min) and high separation quality, was optimized for the determination of 11 common gasoline additives and aromatic compounds using gas chromatograph coupled with triple quadrupole mass spectrometer (GC&ndash QqQ&ndash MS/MS) system. The extraction procedure of analytes was performed by headspace solid&ndash phase microextraction (HS&ndash SPME) and purge and trap (P& T), respectively. Both of the two extraction methods provided excellent chromatographic resolution in subsequently GC&ndash MS/MS detection system, with the coefficients of linear regression of the calibration curves with HS&ndash SPME and P& T pretreatments were 0.9965~0.9998 and 0.9961~0.9999, respectively, n = 7. The limit of detections (LODs) of these selected oxygenate compounds were discovered to be 0.52~32 ng/L in the P& T&ndash GC&ndash MS/MS detection system and 0.11~151 ng/L in the HS&ndash SPME&ndash MS/MS detection system. For benzene, toluene, ethylbenzene and xylene isomers (BTEX), the HS&ndash MS/MS system provided outstanding detection performance because of the lower LOD obtained. However, for other selected compounds, the P& MS/MS system offered lower LODs. The proposed extraction&ndash detection procedure is a simple and sensitive analytical approach for the detection of gasoline additives and aromatic compounds in water. |
| Databáze: | OpenAIRE |
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