Solid-phase microextraction based sampling techniques for the analysis of volatile organic compounds in the atmosphere

Luis Miguel Feijo Barreira

Tutkimustuotos: OpinnäyteVäitöskirjaArtikkelikokoelma

Kuvaus

Volatile organic compounds (VOCs) comprise a large diversity of species that are emitted into the atmosphere from both biogenic and anthropogenic sources. These species play a key role in atmospheric photochemistry, due to their high reactivity with atmospheric oxidants, and in the formation and growth of secondary organic aerosols. The trace levels usually found in ambient air and the enormous heterogeneity of VOC sources and emissions around the Earth call for the development of novel analytical methodologies and portable devices, which provide reduced analytical steps and allow the measurement of these compounds at virtually any spatial location. The main goal of this doctoral thesis was to develop further and apply solid-phase microextraction (SPME) based analytical methods for the sampling and analysis of VOCs in the atmosphere. The SPME techniques used included conventional SPME fibers, needle trap microextraction (NTME) devices and a novel SPME Arrow system. Portable gas chromatography-mass spectrometry (GC-MS) was employed for the fast on-site measurement of atmospheric volatiles. Field measurements were performed at the Station for Measuring Ecosystem-Atmosphere Relations (SMEAR II) in Hyytiälä, Finland. Dynamic SPME collection combined with portable GC-MS allowed the rapid on-site measurement of the most abundant compounds present in the sampling site atmosphere with minimal analytical steps. The potential of NTME and portable GC-MS for the field measurement of biogenic and anthropogenic organic volatiles was also demonstrated, and the method developed was applied to clarify the effect of snow pack on the concentration of biogenic volatile organic compounds (BVOCs) in the air. SPME and portable GC-MS were used for the characterization of BVOCs emitted from chambers installed at the forest soil. A novel SPME Arrow system was also successfully characterized and employed for the sampling of atmospheric VOCs. The results demonstrated the great potential and versatility of SPME-based sampling techniques combined with portable GC-MS for the rapid on-site sampling and analysis of VOCs in the atmosphere.
Alkuperäiskielienglanti
Myöntävä instituutio
  • Helsingin yliopisto
Valvoja/neuvonantaja
  • Riekkola, Marja-Liisa, Valvoja
Myöntöpäivämäärä24 marraskuuta 2017
JulkaisupaikkaHelsinki
Kustantaja
Painoksen ISBN978-951-51-3853-8
Sähköinen ISBN978-951-51-3854-5
TilaJulkaistu - 24 marraskuuta 2017
OKM-julkaisutyyppiG5 Tohtorinväitöskirja (artikkeli)

Tieteenalat

  • 116 Kemia

Lainaa tätä

Feijo Barreira, Luis Miguel. / Solid-phase microextraction based sampling techniques for the analysis of volatile organic compounds in the atmosphere. Helsinki : University of Helsinki, 2017. 174 Sivumäärä
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title = "Solid-phase microextraction based sampling techniques for the analysis of volatile organic compounds in the atmosphere",
abstract = "Volatile organic compounds (VOCs) comprise a large diversity of species that are emitted into the atmosphere from both biogenic and anthropogenic sources. These species play a key role in atmospheric photochemistry, due to their high reactivity with atmospheric oxidants, and in the formation and growth of secondary organic aerosols. The trace levels usually found in ambient air and the enormous heterogeneity of VOC sources and emissions around the Earth call for the development of novel analytical methodologies and portable devices, which provide reduced analytical steps and allow the measurement of these compounds at virtually any spatial location. The main goal of this doctoral thesis was to develop further and apply solid-phase microextraction (SPME) based analytical methods for the sampling and analysis of VOCs in the atmosphere. The SPME techniques used included conventional SPME fibers, needle trap microextraction (NTME) devices and a novel SPME Arrow system. Portable gas chromatography-mass spectrometry (GC-MS) was employed for the fast on-site measurement of atmospheric volatiles. Field measurements were performed at the Station for Measuring Ecosystem-Atmosphere Relations (SMEAR II) in Hyyti{\"a}l{\"a}, Finland. Dynamic SPME collection combined with portable GC-MS allowed the rapid on-site measurement of the most abundant compounds present in the sampling site atmosphere with minimal analytical steps. The potential of NTME and portable GC-MS for the field measurement of biogenic and anthropogenic organic volatiles was also demonstrated, and the method developed was applied to clarify the effect of snow pack on the concentration of biogenic volatile organic compounds (BVOCs) in the air. SPME and portable GC-MS were used for the characterization of BVOCs emitted from chambers installed at the forest soil. A novel SPME Arrow system was also successfully characterized and employed for the sampling of atmospheric VOCs. The results demonstrated the great potential and versatility of SPME-based sampling techniques combined with portable GC-MS for the rapid on-site sampling and analysis of VOCs in the atmosphere.",
keywords = "116 Chemical sciences",
author = "{Feijo Barreira}, {Luis Miguel}",
year = "2017",
month = "11",
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language = "English",
isbn = "978-951-51-3853-8",
publisher = "University of Helsinki",
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Solid-phase microextraction based sampling techniques for the analysis of volatile organic compounds in the atmosphere. / Feijo Barreira, Luis Miguel.

Helsinki : University of Helsinki, 2017. 174 s.

Tutkimustuotos: OpinnäyteVäitöskirjaArtikkelikokoelma

TY - THES

T1 - Solid-phase microextraction based sampling techniques for the analysis of volatile organic compounds in the atmosphere

AU - Feijo Barreira, Luis Miguel

PY - 2017/11/24

Y1 - 2017/11/24

N2 - Volatile organic compounds (VOCs) comprise a large diversity of species that are emitted into the atmosphere from both biogenic and anthropogenic sources. These species play a key role in atmospheric photochemistry, due to their high reactivity with atmospheric oxidants, and in the formation and growth of secondary organic aerosols. The trace levels usually found in ambient air and the enormous heterogeneity of VOC sources and emissions around the Earth call for the development of novel analytical methodologies and portable devices, which provide reduced analytical steps and allow the measurement of these compounds at virtually any spatial location. The main goal of this doctoral thesis was to develop further and apply solid-phase microextraction (SPME) based analytical methods for the sampling and analysis of VOCs in the atmosphere. The SPME techniques used included conventional SPME fibers, needle trap microextraction (NTME) devices and a novel SPME Arrow system. Portable gas chromatography-mass spectrometry (GC-MS) was employed for the fast on-site measurement of atmospheric volatiles. Field measurements were performed at the Station for Measuring Ecosystem-Atmosphere Relations (SMEAR II) in Hyytiälä, Finland. Dynamic SPME collection combined with portable GC-MS allowed the rapid on-site measurement of the most abundant compounds present in the sampling site atmosphere with minimal analytical steps. The potential of NTME and portable GC-MS for the field measurement of biogenic and anthropogenic organic volatiles was also demonstrated, and the method developed was applied to clarify the effect of snow pack on the concentration of biogenic volatile organic compounds (BVOCs) in the air. SPME and portable GC-MS were used for the characterization of BVOCs emitted from chambers installed at the forest soil. A novel SPME Arrow system was also successfully characterized and employed for the sampling of atmospheric VOCs. The results demonstrated the great potential and versatility of SPME-based sampling techniques combined with portable GC-MS for the rapid on-site sampling and analysis of VOCs in the atmosphere.

AB - Volatile organic compounds (VOCs) comprise a large diversity of species that are emitted into the atmosphere from both biogenic and anthropogenic sources. These species play a key role in atmospheric photochemistry, due to their high reactivity with atmospheric oxidants, and in the formation and growth of secondary organic aerosols. The trace levels usually found in ambient air and the enormous heterogeneity of VOC sources and emissions around the Earth call for the development of novel analytical methodologies and portable devices, which provide reduced analytical steps and allow the measurement of these compounds at virtually any spatial location. The main goal of this doctoral thesis was to develop further and apply solid-phase microextraction (SPME) based analytical methods for the sampling and analysis of VOCs in the atmosphere. The SPME techniques used included conventional SPME fibers, needle trap microextraction (NTME) devices and a novel SPME Arrow system. Portable gas chromatography-mass spectrometry (GC-MS) was employed for the fast on-site measurement of atmospheric volatiles. Field measurements were performed at the Station for Measuring Ecosystem-Atmosphere Relations (SMEAR II) in Hyytiälä, Finland. Dynamic SPME collection combined with portable GC-MS allowed the rapid on-site measurement of the most abundant compounds present in the sampling site atmosphere with minimal analytical steps. The potential of NTME and portable GC-MS for the field measurement of biogenic and anthropogenic organic volatiles was also demonstrated, and the method developed was applied to clarify the effect of snow pack on the concentration of biogenic volatile organic compounds (BVOCs) in the air. SPME and portable GC-MS were used for the characterization of BVOCs emitted from chambers installed at the forest soil. A novel SPME Arrow system was also successfully characterized and employed for the sampling of atmospheric VOCs. The results demonstrated the great potential and versatility of SPME-based sampling techniques combined with portable GC-MS for the rapid on-site sampling and analysis of VOCs in the atmosphere.

KW - 116 Chemical sciences

M3 - Doctoral Thesis

SN - 978-951-51-3853-8

PB - University of Helsinki

CY - Helsinki

ER -