Seawater analysis by ambient mass-spectrometry-based seaomics
-
Published:2020-05-28
Issue:10
Volume:20
Page:6243-6257
-
ISSN:1680-7324
-
Container-title:Atmospheric Chemistry and Physics
-
language:en
-
Short-container-title:Atmos. Chem. Phys.
Author:
Zabalegui Nicolás, Manzi Malena, Depoorter AntoineORCID, Hayeck NathalieORCID, Roveretto Marie, Li Chunlin, van Pinxteren ManuelaORCID, Herrmann HartmutORCID, George ChristianORCID, Monge María EugeniaORCID
Abstract
Abstract. 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.
Publisher
Copernicus GmbH
Subject
Atmospheric Science
Reference65 articles.
1. Bayliss, N. S. and Bucat, R. B.: Photolysis of Aqueous Nitrate Solutions,
Aust. J. Chem., 28, 1865–1878, 1975. 2. Bridoux, M. C. and Machuron-Mandard, X.: Capabilities and limitations of
direct analysis in real time orbitrap mass spectrometry and tandem mass
spectrometry for the analysis of synthetic and natural polymers, Rapid
Commun. Mass Spectrom., 27, 2057–2070, https://doi.org/10.1002/rcm.6664,
2013. 3. Brüggemann, M., Hayeck, N., and George, C.: Interfacial photochemistry
at the ocean surface is a global source of organic vapors and aerosols, Nat.
Commun., 9, 2101, https://doi.org/10.1038/s41467-018-04528-7, 2018. 4. Bylesjö, M., Rantalainen, M., Cloarec, O., Nicholson, J. K., Holmes, E.,
and Trygg, J.: OPLS discriminant analysis: combining the strengths of PLS-DA
and SIMCA classification, J. Chemom., 20, 341–351,
https://doi.org/10.1002/cem.1006, 2006. 5. Cajka, T., Riddellova, K., Tomaniova, M., and Hajslova, J.: Ambient mass
spectrometry employing a DART ion source for metabolomic
fingerprinting/profiling: a powerful tool for beer origin recognition,
Metabolomics, 7, 500–508, https://doi.org/10.1007/s11306-010-0266-z, 2011.
Cited by
5 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献
|
|