Diurnal variation in the water-soluble inorganic ions, organic carbon and isotopic compositions of total carbon and nitrogen in biomass burning aerosols from the LBA-SMOCC campaign in Rondônia, Brazil

Shuvashish Kundu, Kimitaka Kawamura, Tracey W. Andreae, A. Hoffer, Meinrat O. Andreae

Research output: Contribution to journalArticle

85 Citations (Scopus)

Abstract

Aerosol particles (PM2.5) were collected during the day (n=6) and nighttime (n=9) from a tropical pasture site in Rondônia, Brazil during an intensive biomass burning period (16-26 September, 2002). Higher normalized (by K+, levoglucosan, or apparent elemental carbon, ECa) mass concentrations of SO42- and CH3SO3- in daytime suggest their photochemical production, while the opposite trend for NO3- suggests its transfer to the aerosol phase at lower temperatures and higher humidities, as well as possibly production through hydrolysis of N2O5 on aqueous aerosol particles. About 4.2-7.5% of OC (5-13% of water-soluble organic carbon (WSOC)) could be characterized at the molecular level using GC-MS and GC-FID. Among the detected organic compound classes, abundances of anhydrosugars and aromatics were higher in night samples, but sugars/sugar alcohols, diacids, oxoacids and α-dicarbonyls were more abundant in day samples. Consecutive day and night samples showed that δ13C values of total carbon (TC) were lower in daytime samples, which can be interpreted as resulting from higher contributions of refractory TC depleted in 13C due to predominantly flaming combustion. The δ15N values of total nitrogen (TN) ranged from +23.5‰ to +25.7‰, however, there was no trend in day and night samples. Higher values of δ13C and δ15N for biomass burning particles than those of unburned vegetation reflect positive isotopic enrichment either during the formation of particles or after the emission of particles in the atmosphere.

Original languageEnglish
Pages (from-to)118-133
Number of pages16
JournalJournal of Aerosol Science
Volume41
Issue number1
DOIs
Publication statusPublished - Jan 2010

Fingerprint

biomass burning
Organic carbon
Aerosols
diurnal variation
Biomass
isotopic composition
Nitrogen
Carbon
organic carbon
Ions
aerosol
Particles (particulate matter)
ion
Water
nitrogen
sugar
carbon
Chemical analysis
Sugar Alcohols
Keto Acids

Keywords

  • Biomass burning
  • Kinetic isotope effect
  • LBA-SMOCC
  • Organic aerosols
  • Rondônia
  • Stable carbon and nitrogen isotopes
  • Water-soluble inorganic ions

ASJC Scopus subject areas

  • Materials Science(all)
  • Environmental Chemistry
  • Pollution

Cite this

Diurnal variation in the water-soluble inorganic ions, organic carbon and isotopic compositions of total carbon and nitrogen in biomass burning aerosols from the LBA-SMOCC campaign in Rondônia, Brazil. / Kundu, Shuvashish; Kawamura, Kimitaka; Andreae, Tracey W.; Hoffer, A.; Andreae, Meinrat O.

In: Journal of Aerosol Science, Vol. 41, No. 1, 01.2010, p. 118-133.

Research output: Contribution to journalArticle

@article{1fcc4cf982a84394855b0807d0e5c6c4,
title = "Diurnal variation in the water-soluble inorganic ions, organic carbon and isotopic compositions of total carbon and nitrogen in biomass burning aerosols from the LBA-SMOCC campaign in Rond{\^o}nia, Brazil",
abstract = "Aerosol particles (PM2.5) were collected during the day (n=6) and nighttime (n=9) from a tropical pasture site in Rond{\^o}nia, Brazil during an intensive biomass burning period (16-26 September, 2002). Higher normalized (by K+, levoglucosan, or apparent elemental carbon, ECa) mass concentrations of SO42- and CH3SO3- in daytime suggest their photochemical production, while the opposite trend for NO3- suggests its transfer to the aerosol phase at lower temperatures and higher humidities, as well as possibly production through hydrolysis of N2O5 on aqueous aerosol particles. About 4.2-7.5{\%} of OC (5-13{\%} of water-soluble organic carbon (WSOC)) could be characterized at the molecular level using GC-MS and GC-FID. Among the detected organic compound classes, abundances of anhydrosugars and aromatics were higher in night samples, but sugars/sugar alcohols, diacids, oxoacids and α-dicarbonyls were more abundant in day samples. Consecutive day and night samples showed that δ13C values of total carbon (TC) were lower in daytime samples, which can be interpreted as resulting from higher contributions of refractory TC depleted in 13C due to predominantly flaming combustion. The δ15N values of total nitrogen (TN) ranged from +23.5‰ to +25.7‰, however, there was no trend in day and night samples. Higher values of δ13C and δ15N for biomass burning particles than those of unburned vegetation reflect positive isotopic enrichment either during the formation of particles or after the emission of particles in the atmosphere.",
keywords = "Biomass burning, Kinetic isotope effect, LBA-SMOCC, Organic aerosols, Rond{\^o}nia, Stable carbon and nitrogen isotopes, Water-soluble inorganic ions",
author = "Shuvashish Kundu and Kimitaka Kawamura and Andreae, {Tracey W.} and A. Hoffer and Andreae, {Meinrat O.}",
year = "2010",
month = "1",
doi = "10.1016/j.jaerosci.2009.08.006",
language = "English",
volume = "41",
pages = "118--133",
journal = "Journal of Aerosol Science",
issn = "0021-8502",
publisher = "Elsevier Limited",
number = "1",

}

TY - JOUR

T1 - Diurnal variation in the water-soluble inorganic ions, organic carbon and isotopic compositions of total carbon and nitrogen in biomass burning aerosols from the LBA-SMOCC campaign in Rondônia, Brazil

AU - Kundu, Shuvashish

AU - Kawamura, Kimitaka

AU - Andreae, Tracey W.

AU - Hoffer, A.

AU - Andreae, Meinrat O.

PY - 2010/1

Y1 - 2010/1

N2 - Aerosol particles (PM2.5) were collected during the day (n=6) and nighttime (n=9) from a tropical pasture site in Rondônia, Brazil during an intensive biomass burning period (16-26 September, 2002). Higher normalized (by K+, levoglucosan, or apparent elemental carbon, ECa) mass concentrations of SO42- and CH3SO3- in daytime suggest their photochemical production, while the opposite trend for NO3- suggests its transfer to the aerosol phase at lower temperatures and higher humidities, as well as possibly production through hydrolysis of N2O5 on aqueous aerosol particles. About 4.2-7.5% of OC (5-13% of water-soluble organic carbon (WSOC)) could be characterized at the molecular level using GC-MS and GC-FID. Among the detected organic compound classes, abundances of anhydrosugars and aromatics were higher in night samples, but sugars/sugar alcohols, diacids, oxoacids and α-dicarbonyls were more abundant in day samples. Consecutive day and night samples showed that δ13C values of total carbon (TC) were lower in daytime samples, which can be interpreted as resulting from higher contributions of refractory TC depleted in 13C due to predominantly flaming combustion. The δ15N values of total nitrogen (TN) ranged from +23.5‰ to +25.7‰, however, there was no trend in day and night samples. Higher values of δ13C and δ15N for biomass burning particles than those of unburned vegetation reflect positive isotopic enrichment either during the formation of particles or after the emission of particles in the atmosphere.

AB - Aerosol particles (PM2.5) were collected during the day (n=6) and nighttime (n=9) from a tropical pasture site in Rondônia, Brazil during an intensive biomass burning period (16-26 September, 2002). Higher normalized (by K+, levoglucosan, or apparent elemental carbon, ECa) mass concentrations of SO42- and CH3SO3- in daytime suggest their photochemical production, while the opposite trend for NO3- suggests its transfer to the aerosol phase at lower temperatures and higher humidities, as well as possibly production through hydrolysis of N2O5 on aqueous aerosol particles. About 4.2-7.5% of OC (5-13% of water-soluble organic carbon (WSOC)) could be characterized at the molecular level using GC-MS and GC-FID. Among the detected organic compound classes, abundances of anhydrosugars and aromatics were higher in night samples, but sugars/sugar alcohols, diacids, oxoacids and α-dicarbonyls were more abundant in day samples. Consecutive day and night samples showed that δ13C values of total carbon (TC) were lower in daytime samples, which can be interpreted as resulting from higher contributions of refractory TC depleted in 13C due to predominantly flaming combustion. The δ15N values of total nitrogen (TN) ranged from +23.5‰ to +25.7‰, however, there was no trend in day and night samples. Higher values of δ13C and δ15N for biomass burning particles than those of unburned vegetation reflect positive isotopic enrichment either during the formation of particles or after the emission of particles in the atmosphere.

KW - Biomass burning

KW - Kinetic isotope effect

KW - LBA-SMOCC

KW - Organic aerosols

KW - Rondônia

KW - Stable carbon and nitrogen isotopes

KW - Water-soluble inorganic ions

UR - http://www.scopus.com/inward/record.url?scp=73649084021&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=73649084021&partnerID=8YFLogxK

U2 - 10.1016/j.jaerosci.2009.08.006

DO - 10.1016/j.jaerosci.2009.08.006

M3 - Article

AN - SCOPUS:73649084021

VL - 41

SP - 118

EP - 133

JO - Journal of Aerosol Science

JF - Journal of Aerosol Science

SN - 0021-8502

IS - 1

ER -