ATMOSPHERIC PHENOLIC DERIVATIVES AS TRACERS IN AN URBAN AREA

ABSTRACT The screening of certain chemical markers associated with the burning of fuels (gasoline, diesel, firewood, pellets, and kerosene) is carried out. The studied markers correspond to phenolic compounds present in emitted gases. Identification and quantification were performed by solid phase e...

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Autores principales:	Rubio,María A., Bustamante,Patricia, Vásquez P.,Yeanice
Lenguaje:	English
Publicado:	Sociedad Chilena de Química 2019
Materias:	phenolic derivatives biomass combustion tracers
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072019000204407
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spelling	oai:scielo:S0717-970720190002044072019-10-11ATMOSPHERIC PHENOLIC DERIVATIVES AS TRACERS IN AN URBAN AREARubio,María A.Bustamante,PatriciaVásquez P.,Yeanice phenolic derivatives biomass combustion tracers ABSTRACT The screening of certain chemical markers associated with the burning of fuels (gasoline, diesel, firewood, pellets, and kerosene) is carried out. The studied markers correspond to phenolic compounds present in emitted gases. Identification and quantification were performed by solid phase extraction followed by high-performance liquid chromatography with diode-array detection (HPLC-DAD). The volatile phenolic derivatives detected and quantified in these experiments were phenol (Ph), 2-nitrophenol (2-NPh), 4-nitrophenol (4-NPh), o-hydroxyphenol (2-HPh), 2-methoxyphenol (2-MetPh), 4-methoxyphenol(4-MetPh) and 2,4-dinitrophenol. The emissions from firewood- and pellet-burning heaters contain mainly o-hydroxyphenol, 4-methoxyphenol, and Ph. In the emissions from gasoline-powered vehicles, only Ph was detected, and in those of diesel-powered vehicles, only 2-NPh and 4-NPh were detected. Kerosene-burning heaters did not exhibit measurable amounts of phenolic compounds in their emissions. The controlled irradiation of the emissions from the burning of firewood and pellets using a photochemical camera showed high degrees of stability of these compounds. The studied phenolic derivatives did not photolyse or were not formed by the photochemical pathway; therefore, their origin is clearly primary, which allows their use as combustion tracers in a particular atmosphere. The presence of Ph derivatives in the Santiago atmosphere indicates the existence of mobile sources (daytime) and the use of firewood (night-time). The presence of 2-NPh and 4-NPh derivatives in the air would be strongly associated with the use of mobile sources that use diesel. In contrast, catechol is associated with the burning of wood for heating.info:eu-repo/semantics/openAccessSociedad Chilena de QuímicaJournal of the Chilean Chemical Society v.64 n.2 20192019-06-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072019000204407en10.4067/S0717-97072019000204407
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	phenolic derivatives biomass combustion tracers
spellingShingle	phenolic derivatives biomass combustion tracers Rubio,María A. Bustamante,Patricia Vásquez P.,Yeanice ATMOSPHERIC PHENOLIC DERIVATIVES AS TRACERS IN AN URBAN AREA
description	ABSTRACT The screening of certain chemical markers associated with the burning of fuels (gasoline, diesel, firewood, pellets, and kerosene) is carried out. The studied markers correspond to phenolic compounds present in emitted gases. Identification and quantification were performed by solid phase extraction followed by high-performance liquid chromatography with diode-array detection (HPLC-DAD). The volatile phenolic derivatives detected and quantified in these experiments were phenol (Ph), 2-nitrophenol (2-NPh), 4-nitrophenol (4-NPh), o-hydroxyphenol (2-HPh), 2-methoxyphenol (2-MetPh), 4-methoxyphenol(4-MetPh) and 2,4-dinitrophenol. The emissions from firewood- and pellet-burning heaters contain mainly o-hydroxyphenol, 4-methoxyphenol, and Ph. In the emissions from gasoline-powered vehicles, only Ph was detected, and in those of diesel-powered vehicles, only 2-NPh and 4-NPh were detected. Kerosene-burning heaters did not exhibit measurable amounts of phenolic compounds in their emissions. The controlled irradiation of the emissions from the burning of firewood and pellets using a photochemical camera showed high degrees of stability of these compounds. The studied phenolic derivatives did not photolyse or were not formed by the photochemical pathway; therefore, their origin is clearly primary, which allows their use as combustion tracers in a particular atmosphere. The presence of Ph derivatives in the Santiago atmosphere indicates the existence of mobile sources (daytime) and the use of firewood (night-time). The presence of 2-NPh and 4-NPh derivatives in the air would be strongly associated with the use of mobile sources that use diesel. In contrast, catechol is associated with the burning of wood for heating.
author	Rubio,María A. Bustamante,Patricia Vásquez P.,Yeanice
author_facet	Rubio,María A. Bustamante,Patricia Vásquez P.,Yeanice
author_sort	Rubio,María A.
title	ATMOSPHERIC PHENOLIC DERIVATIVES AS TRACERS IN AN URBAN AREA
title_short	ATMOSPHERIC PHENOLIC DERIVATIVES AS TRACERS IN AN URBAN AREA
title_full	ATMOSPHERIC PHENOLIC DERIVATIVES AS TRACERS IN AN URBAN AREA
title_fullStr	ATMOSPHERIC PHENOLIC DERIVATIVES AS TRACERS IN AN URBAN AREA
title_full_unstemmed	ATMOSPHERIC PHENOLIC DERIVATIVES AS TRACERS IN AN URBAN AREA
title_sort	atmospheric phenolic derivatives as tracers in an urban area
publisher	Sociedad Chilena de Química
publishDate	2019
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072019000204407
work_keys_str_mv	AT rubiomariaa atmosphericphenolicderivativesastracersinanurbanarea AT bustamantepatricia atmosphericphenolicderivativesastracersinanurbanarea AT vasquezpyeanice atmosphericphenolicderivativesastracersinanurbanarea
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ATMOSPHERIC PHENOLIC DERIVATIVES AS TRACERS IN AN URBAN AREA

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