Physicochemical Characterization of Airborne Particulate Matter in Medellín, Colombia, and its Use in an In Silico Study of Ventricular Action Potential

Zapata-Hernandez, Camilo; Durango-Giraldo, Geraldine; Tobón, Catalina; Buitrago‐Sierra, Robison

doi:10.1007/s11270-020-04884-5

Cited by 8 publications

(5 citation statements)

References 76 publications

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“…The OH stretching vibrations around 3,400 cm −1 observed in our samples (Figure 2) indicated the presence of water and/ or hydroxylated compounds such as alcohols and polyols from biogenic sources and biomass burning (Gipson et al, 2015;Siciliano et al, 2018;Zapata-Hernandez et al, 2020). The broad band observed between 1,617 and 1,640 cm −1 confirmed the presence of water in the samples.…”

Section: Identification Of Chemical Functional Groups By Atr-ftirsupporting

confidence: 60%

“…The broad band signal between 1,617 and 1,640 cm −1 indicated of an overlap of the signals from different chemical functional groups including the stretching vibration absorptions for C=C aromatic and C=O bonds. Some authors have attributed this broad band signal to the functional groups found in organonitrates, aromatic amides, and organic amines (Ji et al, 2015;Radulescu et al, 2017;Siciliano et al, 2018;Zapata-Hernandez et al, 2020). Meanwhile, the appearance of the weak shoulder signals at around 1,220 cm −1 in most of the samples supported the presence of organ nitrated compounds (Shaka' and Saliba, 2004).…”

Section: Identification Of Chemical Functional Groups By Atr-ftirmentioning

confidence: 84%

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Chemical Composition, Optical Properties and Sources of PM2.5 From a Highly Urbanized Region in Northeastern Mexico

Askar

González

Mendoza

et al. 2022

Front. Environ. Sci.

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Here, we report the chemical composition and optical properties of the fine particles (PM2.5) and water-soluble organic carbon (WSOC) of these particles. Additionally, the potential sources of WSOC emission were determined through the study on fluorescence excitation–emission matrix spectra and parallel factor analysis (EEM-PARAFAC). Samples were collected in an urban site of the Monterrey Metropolitan Area in Mexico during summer and winter and characterized using attenuated total reflectance-Fourier-transform infrared spectroscopy (ATR-FTIR), ultraviolet-visible-near infrared-diffuse reflectance spectroscopy (UV–Vis-NIR-DRS), fluorescence spectroscopy, X-ray photoelectron spectroscopy (XPS), and X-ray diffraction (XRD) techniques. The ATR-FTIR analyses allowed the identification of inorganic ions (e.g., CO32−, SO42−, and NO3−), organic functional groups [e.g., carbonyls (C=O), organic hydroxyl (C-OH), carboxylic acid (COOH)], and aromatic and unsaturated aliphatic hydrocarbons. The results obtained by XRD and XPS revealed the presence of organic and inorganic chemical species in PM2.5. The diffuse reflectance spectra of PM2.5 provided the absorption bands in the UV region for CaSO4, CaCO3, and aluminosilicates. The absorption coefficient at 365 nm (Abs365) and Ångström absorption exponent (AAE) values obtained for the aqueous extracts suggest that many of the water-soluble organic compounds corresponded to brown carbon (BrC) chromophores. The mass absorption efficiency values at 365 nm (MAE365) were higher in the winter than summer samples, suggesting the presence of more BrC compounds in the winter samples. The fluorescence indices combined with EEM-PARAFAC analysis showed that the WSOC fraction was mainly composed of humic-like substances (HULIS) which are both of terrestrial and microbial origin.

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Section: Identification Of Chemical Functional Groups By Atr-ftirsupporting

confidence: 60%

Section: Identification Of Chemical Functional Groups By Atr-ftirmentioning

confidence: 84%

Chemical Composition, Optical Properties and Sources of PM2.5 From a Highly Urbanized Region in Northeastern Mexico

Askar

González

Mendoza

et al. 2022

Front. Environ. Sci.

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“…Asimismo, la concentración de material particulado PM10 y PM2.5 es una de las principales causas de este tipo de problemas (Sosa et al, 2017;Mukherjee y Agrawal, 2017), siendo los niños los más afectados (Mahapatra et al, 2020;Manisalidis et al, 2020) A nivel mundial, las infecciones respiratorias agudas (IRA) se encuentran entre los principales problemas de salud pública (Soriano et al, 2020), mientras que las emisiones de partículas por fuentes móviles son uno de los principales problemas Área Ambiental de calidad del aire (Pineda, 2018). En Colombia, particularmente en las ciudades de Bogotá (Colla et al, 2021;Mangones et al, 2020;Zafra et al, 2021) y Medellín (Gil et al, 2020;Hernández et al, 2020), se registran correlaciones significativas del PM2.5 con las muertes de tipo cardiovascular y pulmonar. De lo mencionado se destaca que, en la mayoría de los casos, los estudios sobre los efectos del material particulado se concentran en las grandes ciudades de Colombia sin tener en cuenta que las ciudades intermedias pueden presentar efectos iguales (Rodríguez, 2018).…”

Section: Fuente: Autoresunclassified

Relación entre material particulado, variables meteorológicas e infecciones respiratorias agudas en la zona norte de Ocaña

Armesto Arenas,

Cañon Barriga

2023

rev.investig.agrar.ambient.

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Contextualización: esta investigación se enfoca en la salud pública y la calidad del aire de la zona norte residencial de la ciudad de Ocaña, impactada por una vía nacional con tráfico lento que provoca altas emisiones de material particulado (PM10). Vacío de conocimiento: la investigación responde a las siguientes inquietudes: ¿cómo se relacionan las concentraciones de PM10 y PM2.5 en la zona?; ¿hacia dónde se dispersa el PM10 emitido por las fuentes móviles?; ¿cuáles son las repercusiones de la dispersión en los barrios de la zona norte?; ¿cuáles han sido los grupos etarios significativamente afectados por infecciones respiratorias agudas (IRA) debidas a las condiciones climáticas y el material particulado? Propósito: analizar la correlación del material particulado (PM10 y PM2.5) con las condiciones meteorológicas y con el grado de correspondencia con las infecciones respiratorias agudas (IRA) de la zona norte de Ocaña, Colombia. Metodología: se utilizó información oficial de los años 2018, 2019 y 2021, incluyendo mediciones propias de PM2.5 mediante un equipo automatizado. Las variables relacionadas con las IRA se agruparon por sexo, edad, barrio; y se relacionaron con el material particulado y condiciones meteorológicas, mediante análisis factorial múltiple (AFM) y modelos de regresión lineal. Resultados y conclusiones: Resultados: la relación PM2.5/PM10 es significativa (Pearson r =0.812), y sus concentraciones son superiores a las permitidas. El PM10 tuvo correlación significativa con el viento, la precipitación y la humedad (-0.51, -0.53 y -0.56). Las mujeres presentaron más casos registrados de IRA que los hombres, con una mayor correlación significativa (p<0.05) con el PM10 y la humedad relativa, especialmente para edades entre uno a cuatro años, y mayores de 70 años. Asimismo, los barrios cercanos a la vía nacional, orientados en la dirección del viento, mostraron mayores casos de IRA, además de mayor correlación significativa con el PM10. En conclusión, las concentraciones de PM10 y PM2.5 están significativamente correlacionadas entre sí, e influenciadas por las condiciones climáticas, del mismo modo, sus impactos en la salud respiratoria son significativos en niños menores de cinco años, especialmente los que residen en la dirección de dispersión del PM10.

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“…The detection limits for some functional groups are presented in Table 3. ), and trace elements as well [37,95]. Analysis of FTIR spectra indicates the presence of different organic and inorganic functional groups.…”

Section: Pm Collection Parameters For Ftir Analysismentioning

confidence: 99%

“…3 ) and calcium sulfate (CaSO 4 ) have bands at around 694 and 671 cm −1 , respectively [65,95,[97][98][99]. The wavenumber of 671 cm −1 is attributed to the mineral syngenite K 2 Ca(SO 4 ) 2 • H 2 O .…”

Section: Pm Collection Parameters For Ftir Analysismentioning

confidence: 99%

Systematic Search Using the Proknow-C Method for the Characterization of Atmospheric Particulate Matter Using the Materials Science Techniques XRD, FTIR, XRF, and Raman Spectroscopy

et al. 2023

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Particulate matter (PM), particle pollution that can travel long distances, is a big concern because it contains liquid droplets or microscopic solids resulting in significant health issues such as respirational and cancer problems. Therefore, the characterization of these particles is very significant as a hazard to public health. PM can be identified by X-ray diffraction (XRD) and Raman spectroscopy (RS), both powerful and non-destructive technologies. RS, in particular, allows the identification of black carbon, considered one of the pollutants with the greatest influence on climate change. Another important technology for the evaluation of inorganic and organic functional groups present in PM compounds is the Fourier transform infrared spectroscopy (FTIR). X-ray fluorescence (XRF) provides elemental analysis, revealing, in many cases, the original source of the sample. In order to understand the current state of the art, the Proknow-C method was applied to track the most recent information on PM characterization. Aspects such as sample collection, filter material, characterization parameters, PM components, and the advantages and limitations of each technique are discussed. PM minerals are found to be composed of silicates, oxides, sulfates, and carbonates. The elemental components of PM are classified into five categories: marine aerosol, mineral material, anthropogenic elements, organic carbon, and elemental carbon. The XRD technique is a powerful, fast, and non-destructive tool to identify various minerals present in PM. On the other hand, the XRF technique requires minimal sample treatment, but its sensitivity is limited for the determination of trace metals and some relevant environmental elements. FTIR spectroscopy is able to identify and quantify all organic functional groups present in atmospheric PM. Despite its advantages, a proper choice of calibration method is crucial to ensure its effectiveness. RS is fast and simple, although it only detects Raman-active functional groups. These are some of the advantages and limitations of these techniques addressed in the following review article.

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Physicochemical Characterization of Airborne Particulate Matter in Medellín, Colombia, and its Use in an In Silico Study of Ventricular Action Potential

Cited by 8 publications

References 76 publications

Chemical Composition, Optical Properties and Sources of PM2.5 From a Highly Urbanized Region in Northeastern Mexico

Chemical Composition, Optical Properties and Sources of PM2.5 From a Highly Urbanized Region in Northeastern Mexico

Relación entre material particulado, variables meteorológicas e infecciones respiratorias agudas en la zona norte de Ocaña

Systematic Search Using the Proknow-C Method for the Characterization of Atmospheric Particulate Matter Using the Materials Science Techniques XRD, FTIR, XRF, and Raman Spectroscopy

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