دورية أكاديمية
Seawater analysis by ambient mass-spectrometry-based seaomics
| العنوان: | Seawater analysis by ambient mass-spectrometry-based seaomics |
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| المؤلفون: | N. Zabalegui, M. Manzi, A. Depoorter, N. Hayeck, M. Roveretto, C. Li, M. van Pinxteren, H. Herrmann, C. George, M. E. Monge |
| المصدر: | Atmospheric Chemistry and Physics, Vol 20, Pp 6243-6257 (2020) |
| بيانات النشر: | Copernicus Publications, 2020. |
| سنة النشر: | 2020 |
| المجموعة: | LCC:Physics LCC:Chemistry |
| مصطلحات موضوعية: | Physics, QC1-999, Chemistry, QD1-999 |
| الوصف: | An analytical method coupled to multivariate statistical analysis was developed based on transmission-mode direct analysis in real-time quadrupole time-of-flight mass spectrometry (TM-DART-QTOF-MS) to interrogate lipophilic compounds in seawater samples without the need for desalinization. An untargeted metabolomics approach is addressed here as seaomics and was successfully implemented to discriminate the sea surface microlayer (SML) from the underlying water (ULW) samples (n=22, 10 paired samples) collected during a field campaign at the Cabo Verde islands during September–October 2017. A panel of 11 ionic species detected in all samples allowed sample class discrimination by means of supervised multivariate statistical models. Tentative identification of the species enriched in the SML samples suggests that fatty alcohols, halogenated compounds, and oxygenated boron-containing organic compounds are available at the surface for air–water transfer processes. A subset of SML samples (n=5) were subjected to on-site experiments during the campaign by using a lab-to-field approach to test their secondary organic aerosol (SOA) formation potency. The results from these experiments and the analytical seaomics strategy provide a proof of a concept that can be used for an approach to identifying organic molecules involved in aerosol formation processes at the air–water interface. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 1680-7316 1680-7324 |
| Relation: | https://www.atmos-chem-phys.net/20/6243/2020/acp-20-6243-2020.pdf; https://doaj.org/toc/1680-7316; https://doaj.org/toc/1680-7324 |
| DOI: | 10.5194/acp-20-6243-2020 |
| URL الوصول: | https://doaj.org/article/fe0f41b0feb649dab55a94ac30d37458 |
| رقم الأكسشن: | edsdoj.fe0f41b0feb649dab55a94ac30d37458 |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 16807316 16807324 |
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| DOI: | 10.5194/acp-20-6243-2020 |