dor_id: 4119782

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883.#.#.a: Revistas UNAM

590.#.#.a: Coordinación de Difusión Cultural, UNAM

883.#.#.1: https://www.publicaciones.unam.mx/

883.#.#.q: Dirección General de Publicaciones y Fomento Editorial, UNAM

850.#.#.a: Universidad Nacional Autónoma de México

856.4.0.u: https://www.revistascca.unam.mx/atm/index.php/atm/article/view/52986/46762

100.1.#.a: Rojas, Néstor Y; Villamil, Felipe; Rosas, Irene; Méndez Espinosa, Juan Felipe; Schauer, James Jay

524.#.#.a: Rojas, Néstor Y, et al. (2020). Incremental excess of PM components and sources between two neighbouring sites of Bogotá, Colombia. Atmósfera; Early release, 2020. Recuperado de https://repositorio.unam.mx/contenidos/4119782

720.#.#.a: Corporación Autónoma Regional de CundinamarcaFulbright ColombiaECOPETROL

245.1.0.a: Incremental excess of PM components and sources between two neighbouring sites of Bogotá, Colombia

502.#.#.c: Universidad Nacional Autónoma de México

561.1.#.a: Centro de Ciencias de la Atmósfera, UNAM

264.#.0.c: 2020

264.#.1.c: 2021-02-04

653.#.#.a: Incremental excess; molecular markers; chemical mass balance; source apportionment; back trajectories

506.1.#.a: La titularidad de los derechos patrimoniales de esta obra pertenece a las instituciones editoras. Su uso se rige por una licencia Creative Commons BY-NC 4.0 Internacional, https://creativecommons.org/licenses/by-nc/4.0/legalcode.es, fecha de asignación de la licencia 2021-02-04, para un uso diferente consultar al responsable jurídico del repositorio por medio del correo electrónico editora@atmosfera.unam.mx

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041.#.7.h: eng

520.3.#.a: Air pollution in towns adjacent to and downwind of large cities can be similar or even higher than in the city itself. In the case of towns constituting the greater bogotá area, with more than half a million inhabitants and strong industrial activity, little is known about the factors that affect their poor air quality. this work investigated the incremental excess of the composition and source contribution to pm2.5 in two sites near bogotá (soacha: 4°35"4.59" n, 74°13"11.62" w; and mosquera: 4°42"9.75" n, 74°13"54.94" w), using the chemical mass balance receptor model with organic molecular markers, and back trajectory analysis. simultaneous sample collection was carried out for two-months. organic matter was the major component of the pm2.5 mass (66 ± 14% and 61 ± 12%), while secondary inorganic ions (sulfate, nitrate, and ammonium) constituted 13 ± 8 % and 10 ± 2 %. The main anthropogenic sources contributing to pm2.5 at soacha were wood combustion (23%), diesel vehicles (19%), and coal combustion at small facilities (11%). at mosquera, they were gasoline vehicles (26%), diesel vehicles (19%), and coal combustion at small inefficient facilities (15%). The contribution of regional secondary organic aerosol to pm2.5 was significant (19% and 15%), arriving mostly from the orinoco basin but higher with air masses arriving from the amazon rainforest. The regional contribution to secondary inorganic aerosols was higher with winds from the magdalena valley. The methods presented in this manuscript will be useful in other megacities and large cities to better manage impacts of local and regional air pollution sources.

773.1.#.t: Atmósfera; Early release (2020)

773.1.#.o: https://www.revistascca.unam.mx/atm/index.php/atm/index

046.#.#.j: 2021-10-20 00:00:00.000000

022.#.#.a: ISSN electrónico: 2395-8812; ISSN impreso: 0187-6236

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264.#.1.b: Centro de Ciencias de la Atmósfera, UNAM

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Artículo

Incremental excess of PM components and sources between two neighbouring sites of Bogotá, Colombia

Rojas, Néstor Y; Villamil, Felipe; Rosas, Irene; Méndez Espinosa, Juan Felipe; Schauer, James Jay

Centro de Ciencias de la Atmósfera, UNAM, publicado en Atmósfera, y cosechado de Revistas UNAM

Licencia de uso

Procedencia del contenido

Entidad o dependencia
Centro de Ciencias de la Atmósfera, UNAM
Revista
Repositorio
Contacto
Revistas UNAM. Dirección General de Publicaciones y Fomento Editorial, UNAM en revistas@unam.mx

Cita

Rojas, Néstor Y, et al. (2020). Incremental excess of PM components and sources between two neighbouring sites of Bogotá, Colombia. Atmósfera; Early release, 2020. Recuperado de https://repositorio.unam.mx/contenidos/4119782

Descripción del recurso

Autor(es)
Rojas, Néstor Y; Villamil, Felipe; Rosas, Irene; Méndez Espinosa, Juan Felipe; Schauer, James Jay
Colaborador(es)
Corporación Autónoma Regional de CundinamarcaFulbright ColombiaECOPETROL
Tipo
Artículo de Investigación
Área del conocimiento
Físico Matemáticas y Ciencias de la Tierra
Título
Incremental excess of PM components and sources between two neighbouring sites of Bogotá, Colombia
Fecha
2021-02-04
Resumen
Air pollution in towns adjacent to and downwind of large cities can be similar or even higher than in the city itself. In the case of towns constituting the greater bogotá area, with more than half a million inhabitants and strong industrial activity, little is known about the factors that affect their poor air quality. this work investigated the incremental excess of the composition and source contribution to pm2.5 in two sites near bogotá (soacha: 4°35"4.59" n, 74°13"11.62" w; and mosquera: 4°42"9.75" n, 74°13"54.94" w), using the chemical mass balance receptor model with organic molecular markers, and back trajectory analysis. simultaneous sample collection was carried out for two-months. organic matter was the major component of the pm2.5 mass (66 ± 14% and 61 ± 12%), while secondary inorganic ions (sulfate, nitrate, and ammonium) constituted 13 ± 8 % and 10 ± 2 %. The main anthropogenic sources contributing to pm2.5 at soacha were wood combustion (23%), diesel vehicles (19%), and coal combustion at small facilities (11%). at mosquera, they were gasoline vehicles (26%), diesel vehicles (19%), and coal combustion at small inefficient facilities (15%). The contribution of regional secondary organic aerosol to pm2.5 was significant (19% and 15%), arriving mostly from the orinoco basin but higher with air masses arriving from the amazon rainforest. The regional contribution to secondary inorganic aerosols was higher with winds from the magdalena valley. The methods presented in this manuscript will be useful in other megacities and large cities to better manage impacts of local and regional air pollution sources.
Tema
Incremental excess; molecular markers; chemical mass balance; source apportionment; back trajectories
Idioma
eng
ISSN
ISSN electrónico: 2395-8812; ISSN impreso: 0187-6236

Enlaces