Thermal desorption comprehensive two-dimensional gas chromatography for in-situ measurements of organic aerosols

Goldstein, Allen H.; Worton, David R.; Williams, Brent J.; Hering, Susanne V.; Kreisberg, N. M.; Panić, Ognjen; Górecki, Tadeusz

doi:10.1016/j.chroma.2007.09.094

Cited by 84 publications

(60 citation statements)

References 23 publications

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“…Information regarding TAG design, compound quantification, and data reduction can be found in previous papers (14,(31)(32)(33). Details on TAG calibration as performed during SOAR can be found in ref.…”

Section: Methodsmentioning

confidence: 99%

In situ measurements of gas/particle-phase transitions for atmospheric semivolatile organic compounds

Williams

Goldstein²,

Kreisberg³

et al. 2010

Proc. Natl. Acad. Sci. U.S.A.

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An understanding of the gas/particle-phase partitioning of semivolatile compounds is critical in determining atmospheric aerosol formation processes and growth rates, which in turn affect global climate and human health. The Study of Organic Aerosol at Riverside 2005 campaign was performed to gain a better understanding of the factors responsible for aerosol formation and growth in Riverside, CA, a region with high concentrations of secondary organic aerosol formed through the phase transfer of low-volatility reaction products from the oxidation of precursor gases. We explore the ability of the thermal desorption aerosol gas chromatograph (TAG) to measure gas-to-particle-phase transitioning for several organic compound classes (polar and nonpolar) found in the ambient Riverside atmosphere by using in situ observations of several hundred semivolatile organic compounds. Here we compare TAG measurements to modeled partitioning of select semivolatile organic compounds. Although TAG was not designed to quantify the vapor phase of semivolatile organics, TAG measurements do distinguish when specific compounds are dominantly in the vapor phase, are dominantly in the particle phase, or have both phases present. Because the TAG data are both speciated and time-resolved, this distinction is sufficient to see the transition from vapor to particle phase as a function of carbon number and compound class. Laboratory studies typically measure the phase partitioning of semivolatile organic compounds by using pure compounds or simple mixtures, whereas hourly TAG phase partitioning measurements can be made in the complex mixture of thousands of polar/nonpolar and organic/ inorganic compounds found in the atmosphere.gas chromatography | mass spectrometry | organic aerosol | phase partitioning | thermal desorption

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Section: Methodsmentioning

confidence: 99%

In situ measurements of gas/particle-phase transitions for atmospheric semivolatile organic compounds

Williams

Goldstein²,

Kreisberg³

et al. 2010

Proc. Natl. Acad. Sci. U.S.A.

Self Cite

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“…Improvements in this type of speciated techniques are highly desirable and are being actively pursued (e.g. Goldstein et al, 2008) but it is very unlikely that in the foreseeable future a technique or combination of techniques can provide the fully speciated and quantitative composition of all the OA with a time resolution of minutes or better and some size resolution. Thermal-optical EC/OC analyzers can quantify total OC with 1 h time resolution but without size-resolution.…”

Section: Measurement Of Soa Chemical Compositionmentioning

confidence: 99%

The formation, properties and impact of secondary organic aerosol: current and emerging issues

et al. 2009

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Abstract. Secondary organic aerosol (SOA) accounts for a significant fraction of ambient tropospheric aerosol and a detailed knowledge of the formation, properties and transformation of SOA is therefore required to evaluate its impact on atmospheric processes, climate and human health. The chemical and physical processes associated with SOA formation are complex and varied, and, despite considerable progress in recent years, a quantitative and predictive understanding of SOA formation does not exist and therefore represents a major research challenge in atmospheric science. This review begins with an update on the current state of knowledge on the global SOA budget and is followed by an overview of the atmospheric degradation mechanisms for SOA precursors, gas-particle partitioning theory and the analytical techniques used to determine the chemical composition of SOA. A survey of recent laboratory, field and modeling studies is also presented. The following topical and emerging issues are highlighted and discussed in detail: molecular characterization of biogenic SOA constituents, condensed phase reactions and oligomerization, the interaction of atmospheric organic components with sulfuric acid, the chemical and photochemical processing of organics in the atmospheric aqueous phase, aerosol formation from real plant emissions, interaction of atmospheric organic components with water, thermodynamics and mixtures in atmospheric models. Finally, the major challenges ahead in laboratory, field and modeling studies of SOA are discussed and recommendations for future research directions are proposed.

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“…Recently, twodimensional comprehensive gas chromatography (GCxGC) coupled to time of fly mass spectrometry (TOF/MS) has focused attention on some studies because of the increased resolution and sensitivity of organic compounds in aerosol samples (Welthagen et al, 2003). Thermal desorption aerosol (TAG) was developed for in-situ identification of organic aerosols (William et al, 2006), and a newer version of this system coupled to GCxGC (2D-TAG) was applied for the time-resolved measurement of organic compounds in ambient aerosols (Goldstein et al, 2008), showing extraordinary improved separation capabilities for the OA. Although GCxGC offers a great deal of information at the molecular level, quantitative analysis has been less developed (Amador-Muñoz & Marriott, 2008).…”

Section: Instrumental Determinationmentioning

confidence: 99%

Organic Compound in Airborne Particles and their Genottoxic Effects in Mexico City

Villalobos-Pietrini¹,

Amador-Muñóz²,

Valle-Hernández³

et al. 2011

Air Quality Monitoring, Assessment and Management

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Thermal desorption comprehensive two-dimensional gas chromatography for in-situ measurements of organic aerosols

Cited by 84 publications

References 23 publications

In situ measurements of gas/particle-phase transitions for atmospheric semivolatile organic compounds

In situ measurements of gas/particle-phase transitions for atmospheric semivolatile organic compounds

The formation, properties and impact of secondary organic aerosol: current and emerging issues

Organic Compound in Airborne Particles and their Genottoxic Effects in Mexico City

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