Accurate and ultrasensitive determination of 72 parent and halogenated polycyclic aromatic hydrocarbons in a variety of environmental samples via gas chromatography-triple quadrupole mass spectrometry
| Autor: | Masahiro Tokumura, Yuichi Miyake, Takashi Amagai, Qi Wang, Kento Sei |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Environmental Engineering
Health Toxicology and Mutagenesis 0208 environmental biotechnology Environmental media 02 engineering and technology 010501 environmental sciences Mass spectrometry 01 natural sciences Gas Chromatography-Mass Spectrometry Tandem Mass Spectrometry Triple quadrupole mass spectrometry Environmental Chemistry Polycyclic Aromatic Hydrocarbons 0105 earth and related environmental sciences Vehicle Emissions Detection limit Chromatography Chemistry Public Health Environmental and Occupational Health Ms analysis General Medicine General Chemistry Pollution 020801 environmental engineering Ambient air Chromatographic separation Gas chromatography |
| Zdroj: | Chemosphere. 271 |
| ISSN: | 1879-1298 |
| Popis: | Polycyclic aromatic hydrocarbons (PAHs) and their halogenated derivatives (XPAHs) are ubiquitous in various environmental media. Analytical problems, however, make it difficult to accurately determine their concentrations. To develop a satisfactory analytical method suitable for a diversity of PAHs and XPAHs in multiple environmental samples, we evaluated three commercial analytical columns (DB-5MS, Select PAH, and Rxi-PAH) for better chromatographic separation and optimized the analytical conditions for gas chromatography-triple quadrupole mass spectrometry (GC-MS/MS). Comparison of the abilities of the columns to separate peaks revealed that the Rxi-PAH was the best column for both PAH and XPAH analyses. Optimization of analytical conditions for GC-MS/MS resulted in sensitivities for PAHs and XPAHs that were 4.2-fold-2600-fold higher than the sensitivities of GC-high-resolution MS (GC-HRMS) (an example of a traditional analytical method). Although there were no statistically significant differences between the instrumental detection limits (IDLs) of PAHs and XPAHs measured by GC-HRMS, the IDLs of XPAHs were significantly lower than those of PAHs when measured by GC-MS/MS. This difference could be attributed to the unique ionization patterns of XPAHs in the GC-MS/MS analysis, which suppressed background noise and increased the analytical sensitivity. Analyses of PAHs and XPAHs in grilled chicken, vehicle exhaust, sea sediment, ambient air, and indoor dust via the analytical method optimized in this study revealed that the proposed method was sufficiently sensitive, comprehensive, and versatile for risk assessment purposes, and could eliminate interferences associated with the co-elution of target PAHs and XPAHs. |
| Databáze: | OpenAIRE |
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