Chemical characterization of extractable water soluble matter associated with PM10 from Mexico City during 2000

Gutiérrez-Castillo, María Eugenia; Olivos-Ortiz, M.; Vizcaya-Ruiz, Andrea De; Cebrián, Mariano E.

doi:10.1016/j.chemosphere.2005.03.063

Cited by 36 publications

(23 citation statements)

References 25 publications

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“…The seasonal variations of fungal glucans and sugar alcohols are consistent with prior studies of glucans [Hwang et al, 2014;Madsen et al, 2011;Thorn, 2001] and sugar alcohols [Fu et al, 2012;Jia et al, 2010;Liang et al, 2013;Sullivan et al, 2011], in which fungal spore levels increase during warmer months characteristic of growing seasons that favor fungal growth and spore dispersal [Manninen et al, 2014;Shelton et al, 2002]. Accordingly, this work demonstrates that seasonal variations of fungal spores in Iowa follow those previously observed in different locations of the world.…”

Section: Fungal Spores 321 Seasonal Variation In Fungal Spore Tracerssupporting

confidence: 89%

“…The protein concentrations observed in Iowa were comparable to levels measured in Rubidoux, CA, U.S., which had a mean concentration of 2.7 µg m −3 of proteins for a study conducted from October to May [ Miguel et al ., ]. Meanwhile, the observed levels in Iowa were much lower than those measured in Mexico City, where protein levels averaged 81 µg m −3 from July to December [ Gutiérrez‐Castillo et al ., ], and Hefei, China, where levels averaged 11 µg m −3 from June to February [ Kang et al ., ]; in these impacted environments, high protein levels were attributed to anthropogenic and/or crustal sources. Even though proteins are not measured widely in outdoor environments it is valuable to determine their ambient levels as an indicator of biologically derived material that is often connected with negative health impacts [ Madsen et al ., ; Puc , ; Schäppi et al ., ].…”

Section: Resultsmentioning

confidence: 99%

“…Water-soluble proteins also showed moderate Journal of Geophysical Research: Atmospheres 10.1002/2015JD024538 correlations (r s = 0.5) with temperature. Glucose is associated with vegetative emissions [Fu et al, 2012;Speranza et al, 1997;Sullivan et al, 2011] and exhibited high positive correlations with temperature (r s = 0.8). Associations between bioaerosols and temperature have been observed previously in diverse geographical regions of the world.…”

Section: Correlation Of Bioaerosols With Temperaturementioning

confidence: 99%

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Urban enhancement of PM₁₀ bioaerosol tracers relative to background locations in the Midwestern United States

et al. 2016

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Bioaerosols are well-known immune-active particles that exacerbate respiratory diseases. Human exposures to bioaerosols and their resultant health impacts depend on their ambient concentrations, seasonal and spatial variation, and co-pollutants, which are not yet widely characterized. In this study, chemical and biological tracers of bioaerosols were quantified in respirable particulate matter (PM10) collected at three urban and three background sites in the Midwestern United States across four seasons in 2012. Endotoxins from gram negative bacteria (and a few gram positive bacteria), water-soluble proteins, and tracers for fungal spores (fungal glucans, arabitol and mannitol) were ubiquitous and showed significant seasonal variation and dependence on temperature. Fungal spores were elevated in spring and peaked in summer, following the seasonal growing cycle, while endotoxins peaked in autumn during the row crop harvesting season. Paired comparisons of bioaerosols in urban and background sites revealed significant urban enhancements in PM10, fungal glucans, endotoxins and water-soluble proteins relative to background locations, such that urban populations have a greater outdoor exposure to bioaerosols. These bioaerosols contribute, in part, to the urban excesses in PM10. Higher bioaerosol mass fractions in urban areas relative to background sites indicate that urban areas serve as a source of bioaerosols. Similar urban enhancements in water-soluble calcium and its correlation with bioaerosol tracers point towards wind-blown soil as an important source of bioaerosols in urban areas.

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Section: Fungal Spores 321 Seasonal Variation In Fungal Spore Tracerssupporting

confidence: 89%

Section: Resultsmentioning

confidence: 99%

Section: Correlation Of Bioaerosols With Temperaturementioning

confidence: 99%

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Urban enhancement of PM₁₀ bioaerosol tracers relative to background locations in the Midwestern United States

et al. 2016

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“…One important DON group are proteinaceous compounds that include amino acids either free (FAA) or in combined form (CAA). The proteinaceous compounds are often analysed as a sum parameter 'proteins' using an analytical staining method with Coomassie blue developed by Bradford (1976) and often applied in previous studies (Gutiérrez-Castillo et al, 2005;Mandalakis et al, 2011;Rastelli et al, 2017). Besides determining the sum parameter 'proteins', it is important to 15 investigate FAA, because these compounds are more utilizable sources of nitrogen than proteins for aquatic organism such as phytoplankton and bacteria (Antia et al, 1991;McGregor and Anastasio, 2001).…”

Section: Introductionmentioning

confidence: 99%

Concerted measurements of free amino acids at the Cape Verde Islands: High enrichments in submicron sea spray aerosol particles and cloud droplets

Triesch¹,

Pinxteren²,

Engel³

et al. 2020

Preprint

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Abstract. This study presents measurements of free amino acids (FAA) in the marine environment to elucidate their transfer from the ocean into the atmosphere to marine aerosol particles and to clouds. FAA were investigated in seawater (underline water (ULW), sea surface microlayer (SML)), in ambient marine size-segregated aerosol particle samples at two heights (ground based at the Cape Verde Atmospheric Observatory (CVAO) and at the Mt. Verde, 744 m height) and in cloud water using concerted measurements. The ∑FAA concentration in the SML varied between 0.13–3.64 µmol L−1, in the ULW between 0.01–1.10 µmol L−1 and a strong enrichment of ∑FAA in the SML (EFSML: 1.1–298.4, average of 57.2) was observed. In the submicron (0.05–1.2 µm) aerosol particles at the CVAO, the composition of FAA was more complex and higher atmospheric concentration of ∑FAA (up to 6.3 ng m−3) compared to the supermicron (1.2–10 µm) aerosol particles (maxima of 0.5 ng m−3) were observed. The total ∑FAA concentration (PM10) was between 1.8–6.8 ng m−3 and tended to increase during the campaign. Averaged ∑FAA concentrations on the aerosol particles at the Mt. Verde were lower (submicron: 1.5 ng m−3, supermicron: 1.2 ng m−3) compared to the CVAO. A similar percentage contribution of ∑FAA to dissolved organic carbon (DOC) in the seawater (up to 7.6&tinsp;%) and to water-soluble organic carbon (WSOC) on the submicron aerosol particles (up to 5.3 %) indicated a related transfer process of FAA and DOC in the marine environment. The FAA were strongly enriched in the submicron aerosol particles (EFaer(∑FAA) 4∙102–3∙104, EFaer(WSOC) 2∙103–1∙104), possibly resulting from film droplet formation. The enrichment in supermicron aerosol particles was several orders of magnitude lower compared to supermicron size range with EFaer(∑FAA) 1∙101–2∙101, EFaer(WSOC) 3∙102–4∙102. A case study showed that several amino acids were transported from the ocean up to cloud level (e.g. aspartic acid, glutamic acid, proline) while other amino acids might not be transferred or quickly degraded (e.g. phenylalanine, tyrosine) or produced (e.g. GABA). The cloud water samples exhibited a similar composition of FAA compared to the SML but a strong variation of the atmospheric concentration of ∑FAA during the campaign (11.2–489.9 ng m−3). FAA in cloud water samples showed a strong enrichment by a factor of 4∙103 compared to the SML. The presence of high concentrations of FAA in general and of biologically produced FAA (aspartic acid) in particular together with the presence of inorganic marine tracers (sodium, methane sulfonic acid) demonstrates the influence of oceanic sources on marine clouds.

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“…Water-soluble proteins have been assessed to determine levels of biological particles in the atmosphere in Mexico City, 61,62 China, 63 and tropical forest area. 64 Proteins are relatively non-specific, having a multitude of sources including soil resuspension from traffic and construction, biomass burning, pollens, fungi and bacteria.…”

Section: Water-soluble Proteinsmentioning

confidence: 99%

Bioaerosols in the Midwestern United States

Rathnayake¹

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Most importantly, a very special thank you to my "amma" (mother) and "thaththa" (father) for their endless support and love throughout my life. Thank you for making me who I am today! I would not forget all my friends back in Sri Lanka and here in Iowa who have also been a massive part of this journey. I appreciate all the wonderful things you have done to make this journey memorable. I thank my loving husband, Ashabha, for giving me the strength to be myself and last but not least, I would like to remind my daughter Miheli whose smiling face takes all my stress away the moment I enter home.

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Chemical characterization of extractable water soluble matter associated with PM10 from Mexico City during 2000

Cited by 36 publications

References 25 publications

Urban enhancement of PM₁₀ bioaerosol tracers relative to background locations in the Midwestern United States

Urban enhancement of PM₁₀ bioaerosol tracers relative to background locations in the Midwestern United States

Concerted measurements of free amino acids at the Cape Verde Islands: High enrichments in submicron sea spray aerosol particles and cloud droplets

Bioaerosols in the Midwestern United States

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Chemical characterization of extractable water soluble matter associated with PM10 from Mexico City during 2000

Cited by 36 publications

References 25 publications

Urban enhancement of PM10 bioaerosol tracers relative to background locations in the Midwestern United States

Urban enhancement of PM10 bioaerosol tracers relative to background locations in the Midwestern United States

Concerted measurements of free amino acids at the Cape Verde Islands: High enrichments in submicron sea spray aerosol particles and cloud droplets

Bioaerosols in the Midwestern United States

Contact Info

Product

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About

Urban enhancement of PM₁₀ bioaerosol tracers relative to background locations in the Midwestern United States

Urban enhancement of PM₁₀ bioaerosol tracers relative to background locations in the Midwestern United States