The coupling of surface seawater organic nitrogen and the marine aerosol as inferred from enantiomer-specific amino acid analysis

Wedyan, Mohammed; Preston, Martin

doi:10.1016/j.atmosenv.2008.04.038

Cited by 103 publications

(92 citation statements)

References 48 publications

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“…Several types of L-amino acids have been identified in marine atmospheric aerosol samples ( Fig. 1), including, proline (PRO), serine (SER), glycine (GLY), alanine (ALA), valine (VAL), methionine (MET) and phenylalanine (PHE) (Mace et al, 2003a, b, c;Zhang and Anastasio, 2003;Malder et al, 2004;Wedyan and Preston, 2008). Over the central Arctic Ocean reaction products of L-methionine was suggested as being responsible for observed periods of new particle formation (Leck and Bigg, 1999).…”

Section: Introductionmentioning

confidence: 99%

Cloud droplet activation mechanisms of amino acid aerosol particles: insight from molecular dynamics simulations

Hede

et al. 2013

Tellus B: Chemical and Physical Meteorology

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A B S T R A C T Atmospheric amino acids constitute a large fraction of water-soluble organic nitrogen compounds in aerosol particles, and have been confirmed as effective cloud condensation nuclei (CCN) materials in laboratory experiments. We present a molecular dynamics (MD) study of six amino acids with different structures and chemical properties that are relevant to the remote marine atmospheric aerosolÁcloud system, with the aim of investigating the detailed mechanism of their induced changes in surface activity and surface tension, which are important properties for cloud drop activation. Distributions and orientations of the amino acid molecules are studied; these L-amino acids are serine (SER), glycine (GLY), alanine (ALA), valine (VAL), methionine (MET) and phenylalanine (PHE) and are categorised as hydrophilic and amphiphilic according to their affinities to water. The results suggest that the presence of surface-concentrated amphiphilic amino acid molecules give rise to enhanced LennardÁJones repulsion, which in turn results in decreased surface tension of a planar interface and an increased surface tension of the spherical interface of droplets with diameters below 10 nm. The observed surface tension perturbation for the different amino acids under study not only serves as benchmark for future studies of more complex systems, but also shows that amphiphilic amino acids are surface active. The MD simulations used in this study reproduce experimental results of surface tension measurements for planar interfaces and the method is therefore applicable for spherical interfaces of nano-size for which experimental measurements are not possible to conduct.

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Section: Introductionmentioning

confidence: 99%

Cloud droplet activation mechanisms of amino acid aerosol particles: insight from molecular dynamics simulations

Hede

et al. 2013

Tellus B: Chemical and Physical Meteorology

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“…Wedyan & Preston (Wedyan and Preston, 2008) observed a strong enantiomeric excess of L-AAs in marine aerosols, indicating a relevant proportion of fresh rather than microbially degraded material. In addition, they reported the presence of D-AAs, among which D-Ala was the most abundant AA.…”

Section: Discussionmentioning

confidence: 99%

“…In urban environments, the literature reports atmospheric concentrations of L-FAAs ranging between 334 and 2470 pmol m −3 (Barbaro et al, 2011;Di Filippo et al, 2014;Yang et al, 2005;Zhang and Anastasio, 2003). In marine and marine remote aerosols, lower levels ranging from 1.5 to 648 pmol m −3 were observed (Barbaro et al, 2015;Mace et al, 2003b;Mace et al, 2003c;Matsumoto and Uematsu, 2005;Wedyan and Preston, 2008). At a Polar coastal site in the Arctic (Ny Alesund, Svalbard Islands) (Scalabrin et al, 2012), during the summer, FAAs ranged from 0.59 to 4.7 pmol m −3…”

Section: D-l Amino Acidsmentioning

confidence: 99%

Five primary sources of organic aerosols in the urban atmosphere of Belgrade (Serbia)

Zangrando

Barbaro

Kirchgeorg

et al. 2016

Science of The Total Environment

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Biomass burning and primary biological aerosol particles (PBAPs) represent important primary sources of organic compounds in the atmosphere. These particles and compounds are able to affect climate and human health. In the present work, using HPLC-orbitrapMS, we determined the atmospheric concentrations of molecular markers such as anhydrosugars and phenolic compounds that are specific for biomass burning, as well as the concentrations of sugars, alcohol sugars and D- and L-amino acids (D-AAs and L-AAs) for studying PBAPs in Belgrade (Serbia) aerosols collected in September–December 2008. In these samples, high levels of all these biomarkers were observed in October. Relative percentages of vanillic (V), syringic compounds (S) and p-coumaric acid (PA), as well as levoglucosan/mannosan (L/M) ratios, helped us discriminate between open fire events and wood combustion for domestic heating during the winter. L-AAs and D-AAs (1% of the total) were observed in Belgrade aerosols mainly in September–October. During open fire events, mean D-AA/L-AA (D/L) ratio values of aspartic acid, threonine, phenylalanine, alanine were significantly higher than mean D/L values of samples unaffected by open fire. High levels of AAs were observed for open biomass burning events. Thanks to four different statistical approaches, we demonstrated that Belgrade aerosols are affected by five sources: a natural source, a source related to fungi spores and degraded material and three other sources linked to biomass burning: biomass combustion in open fields, the combustion of grass and agricultural waste and the combustion of biomass in stoves and industrial plants. The approach employed in this work, involving the determination of specific organic tracers and statistical analysis, proved useful to discriminate among different types of biomass burning events

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“…Primary productivity heavily influenced the abundance and composition of amino acids (Fig. 2), and concentrations above the LOD (110 and 472 μg C L −1 ) were detected for the following amino acids: [65].…”

Section: Comparison Of Quantitative Performance Between Ltq-orbitrap mentioning

confidence: 99%

d- and l-amino acids in Antarctic lakes: assessment of a very sensitive HPLC-MS method

et al. 2014

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Amino acids represent a fraction of organic matter in marine and freshwater ecosystems, and a source of carbon, nitrogen and energy. L-Amino acids are the most common enantiomers in nature because these chiral forms are used during the biosynthesis of proteins and peptide. To the contrary, the occurrence of D-amino acids is usually linked to the presence of bacteria. We investigated the distribution of L-and D-amino acids in the lacustrine environment of Terra Nova Bay, Antarctica, in order to define their natural composition in this area and to individuate a possible relationship with primary production. A simultaneous chromatographic separation of 40 L-and D-amino acids was performed using a chiral stationary phase based on teicoplainin aglycone (CHIROBIOTIC TAG). The chromatographic separation was coupled to two different mass spectrometers-an LTQ-Orbitrap XL (Thermo Fisher Scientific) and an API 4000 (ABSciex)-in order to investigate their quantitative performance. High-performance liquid chromatography coupled with mass spectrometry methods were evaluated through the estimation of their linear ranges, repeatability, accuracy and detection and quantification limits. The high-resolution mass spectrometer LTQ-Orbitrap XL presented detection limits between 0.4 and 7 μgL −1 , while the triple quadrupole mass spectrometer API 4000 achieved the best detection limits reported in the literature for the quantification of amino acids (between 4 and 200 ngL −1 ). The most sensitive method, HPLC-API 4000, was applied to lake water samples.

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The coupling of surface seawater organic nitrogen and the marine aerosol as inferred from enantiomer-specific amino acid analysis

Cited by 103 publications

References 48 publications

Cloud droplet activation mechanisms of amino acid aerosol particles: insight from molecular dynamics simulations

Cloud droplet activation mechanisms of amino acid aerosol particles: insight from molecular dynamics simulations

Five primary sources of organic aerosols in the urban atmosphere of Belgrade (Serbia)

d- and l-amino acids in Antarctic lakes: assessment of a very sensitive HPLC-MS method

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