Analysis of particulate organics in a forest atmosphere by thermodesorption GC/MS

Helmig, Detlev; Bauer, Angela; Müller, Josef; Klein, W.

doi:10.1016/0960-1686(90)90454-u

Cited by 25 publications

(18 citation statements)

References 26 publications

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“…The feasibility of in-injection port TD has been demonstrated in the analysis of ambient volatile organic compounds (17)(18)(19) and explosives (20). Three studies (8,13,15) reported the application of in-injection port TD in the determination of aerosol organics. The 3 first study (8) presented only qualitative results.…”

Section: Introductionmentioning

confidence: 99%

“…Thermal desorption has been commonly employed for extracting volatile and semi-volatile organic species from adsorbing matrices such as solid sorbent tubes (e.g., 5,6). In comparison, only a handful of applications have been published on using thermal desorption of various forms for the analysis of ambient aerosol organic compounds in the past two decades (7)(8)(9)(10)(11)(12)(13)(14)(15)(16).…”

Section: Introductionmentioning

confidence: 99%

“…Three studies (8,13,15) reported the application of in-injection port TD in the determination of aerosol organics. The 3 first study (8) presented only qualitative results. The second study (13) reported measurements of alkane and PAH concentrations using the in-injection port TD method, however, no evaluation of the technique against an established method was presented.…”

Section: Introductionmentioning

confidence: 99%

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In-injection port thermal desorption and subsequent gas chromatography–mass spectrometric analysis of polycyclic aromatic hydrocarbons and n-alkanes in atmospheric aerosol samples

Wang

2004

Journal of Chromatography A

144

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The traditional approach for analysis of aerosol organics is to extract aerosol materials collected on filter substrates with organic solvents followed by solvent evaporation and analytical separation and detection. This approach has the weaknesses of being labor intensive and being prone to contamination from the extracting solvents. We describe here an alternative approach for the analysis of aerosol alkanes and polycyclic aromatic hydrocarbons (PAHs) that obviates the use of solvents. In our approach, small strips of aerosol-laden filter materials are packed into a GC split/splitless injector liner. Alkanes and PAHs on the filter are thermally desorbed in the injection port and focused onto the head of a GC column for subsequent separation and detection. No instrument modification is necessary to accommodate the introduction of the aerosol organics into the GC-MS system. Comparison studies were carried out on a set of sixteen ambient aerosol samples using our in-injection port thermal desorption method and the traditional solvent extraction method. Reasonably good agreement of individual alkanes and PAHs by the two methods was demonstrated for the ambient samples. The in-injection port thermal desorption method requires much less filter material for detecting the same air concentrations of alkanes and PAHs. This is the Pre-Published Version 2

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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In-injection port thermal desorption and subsequent gas chromatography–mass spectrometric analysis of polycyclic aromatic hydrocarbons and n-alkanes in atmospheric aerosol samples

Wang

2004

Journal of Chromatography A

144

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“…This technique has been applied to e.g., PAHs, 252 , alkanes, 254 and, with an additional derivatization step, organic acids. 255 Other thermally-assisted extraction methods 256,257 combined with derivatization have been described 226,258 and offer powerful tools for the identification of unknown compounds. In particular, a field deployable thermal desorption aerosol gas chromatograph (TAG) using both FID and MS and enabling high time-resolution for aerosol analysis has been developed.…”

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confidence: 99%

The Molecular Identification of Organic Compounds in the Atmosphere: State of the Art and Challenges

et al. 2015

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“…However, pyrolysis outside the GC injector generally results in loss of compounds on the tubing walls of the transfer line. Helmig et al 67) modified a conventional GC injector to enable the insertion of loaded filter samples without affecting the performance of the GC-system. Sigman and Ma 68) developed a gas chromatographic method utilizing thermal desorption from a dry surface wipe for the analysis of explosives, trace chemical evidence.…”

Section: Pah Analysismentioning

confidence: 99%

Diesel Exhaust Particles in the Work Environment and their Analysis

Ono-Ogasawara

Smith

2004

INDUSTRIAL HEALTH

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Diesel engines are widely used in industries, for example transportation, mining, and construction, because they efficiently produce high power. In diesel exhaust particles (DEP), the number of ultrafine particles, less than around 100 nm, is dominant in contrast to mass size distribution. Carcinogenic PAHs may be adsorbed on DEP at high concentrations. As occupational exposure usually occurs near emission sources, workers are likely to be exposed to high concentration DEP. The exhaust emissions of diesel engines have become lower by modification of the engines and fuels, and introduction of filters and catalysts, thus it has become more difficult to monitor mass and chemical components in DEP. New technology and instruments are being introduced to characterize DEP especially chemically. Recently, quick analytical methods without extraction, and continuous or semi-continuous methods have been introduced. This article will review 1) Elemental Carbon (EC) monitors, 2) analytical methods of individual PAH without solvent extraction, and 3) continuous PAH monitor, because EC and PAH are typical constituents for DEP.

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Analysis of particulate organics in a forest atmosphere by thermodesorption GC/MS

Cited by 25 publications

References 26 publications

In-injection port thermal desorption and subsequent gas chromatography–mass spectrometric analysis of polycyclic aromatic hydrocarbons and n-alkanes in atmospheric aerosol samples

In-injection port thermal desorption and subsequent gas chromatography–mass spectrometric analysis of polycyclic aromatic hydrocarbons and n-alkanes in atmospheric aerosol samples

The Molecular Identification of Organic Compounds in the Atmosphere: State of the Art and Challenges

Diesel Exhaust Particles in the Work Environment and their Analysis

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