Isolation of water-soluble organic matter from atmospheric aerosol

Varga, Bálint; Kiss, Gyula; Ganszky, Ildikó; Gelencsér, András; Krivácsy, Z.

doi:10.1016/s0039-9140(01)00446-5

Cited by 191 publications

(155 citation statements)

References 17 publications

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“…Therefore, organic compounds contain such functional groups in aerosols can potentially influence the performance of the isolation and quantification methods. For example, aromatic alcohols, phenols, aromatic acids, and other interfering compounds were reported remaining in the isolated HULIS fractions (Decesari et al, 2000;Varga et al, 2001;Sullivan and Weber, 2006;Salma et al, 2007).…”

Section: Selectivity Of the Four Methodsmentioning

confidence: 99%

“…Thereafter, they were applied to five aerosol samples obtained from Guangzhou, China. As a complement to other studies describing extensive tests on the isolation methods as described by Varga et al (2001), Sullivan and Weber (2006) and Baduel et al (2009), this study aims to produce results that may lead to derivation of an efficient, easilyoperated method for quantification and isolation of HULIS in ambient aerosols.…”

Section: Introductionmentioning

confidence: 99%

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Comparison of isolation and quantification methods to measure humic-like substances (HULIS) in atmospheric particles

Fan

Song

Peng

2012

Atmospheric Environment

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Section: Selectivity Of the Four Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Comparison of isolation and quantification methods to measure humic-like substances (HULIS) in atmospheric particles

Fan

Song

Peng

2012

Atmospheric Environment

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“…Different extraction procedures and detection methods were presented in the literature. Spectroscopic methods such as ultraviolet, fluorescence, or infrared spectroscopy were most often used to characterise this organic mass fraction, but electrospray ionisation mass spectroscopy and laser desorption/ionisation mass spectrometry (LDI/MS) were used as well (Havers et al 1998, Kalberer et al 2004, 2006, Kiss et al 2003, Krivácsy et al 2001, Samburova et al 2005, Varga et al 2001, Zappoli et al 1999. Because of the large number of compounds detected with mass spectrometric methods (Kiss et al 2003, Samburova et al 2005, and because the chemical properties of these compounds are mostly unknown, it is difficult to determine their concentration or their molecular weight distribution (Kalberer et al 2006).…”

Section: Methodologies For the Determination Of Organic Aerosol Compomentioning

confidence: 99%

Characterisation of solvent extractable organic constituents in atmospheric particulate matter: an overview

Alves

2008

An. Acad. Bras. Ciênc.

113

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In spite of accounting for 10-70% of the atmospheric aerosol mass, particulate-phase organic compounds are not well characterised, and many aspects of aerosol formation and evolution are still unknown. The growing awareness of the impact of particulate aerosols on climate, and the incompletely recognised but serious effects of anthropogenic constituents on air quality and human health, have conducted to several scientific studies. These investigations have provided information about the behaviour of atmospheric particulate matter and the description of the character of its carbonaceous content. The compilation of such results is important as they append to the emergent global-wide dataset of the organic composition of atmospheric aerosols. The contribution of the major emission sources to regional particulate pollution can be diagnosed by using specific molecular markers. This overview is mainly focused on results obtained with gas chromatography coupled with mass spectrometry, since it is the analytical method of choice in elucidating the solvent-extractable organic compounds in atmospheric particulate matter. A synopsis of the selection of organic tracers and the application of geochemical parameters to the analysis of organic constituents as a tool for source apportionment is shown here. Besides the assessment of current knowledge, this paper also presents the identification of further areas of concern.

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“…Up to now, few attempts have been made to characterise humic substances by molecular weight using "soft" ionisation techniques such as electrospray ionisation (ESI), laser desorption (LDI) and matrix assisted laser desorption ionisation (MALDI). ESI is finding the most widespread application because it is considered to be the softest ionisation method (Brown and Rice, 2000;Kiss et al, 2003;Persson et al, 2000;Pfeifer et al, 2001;Reemtsma and These, 2003;Stenson et al, 2002;Varga et al, 2001).…”

Section: Introductionmentioning

confidence: 99%

Mass spectrometric techniques for characterisation of platinum–humic substance complexes in soil and street dust samples

Lyubomirova

Djingova

2013

Chemical Speciation & Bioavailability

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Increased platinum concentrations have been detected in environmental samples since the introduction of catalytic converters in Europe. It was previously believed that PGE are relatively inert and that the soluble fraction of automobile catalyst emitted PGE is only a few percent. However, new studies suggested that metallic Pt is oxidised in the soil and that the majority of the Pt species could be humic substance complexes.The aim of the present paper is the characterisation of platinum-humic acid complexes in spiked soil and street dust samples. A number of different soft ionisation mass spectrometric techniques, such as ESI-Q-MS, ESI-ION TRAP-MS and MALDI-TOF-MS have been tested. The ESI mass spectra of the soil humic acids were characterised by high complexity and irreproducibility.MALDI-TOF-MS was used for humic acid complexes characterisation in positive and negative modes. Positive ionisation was less effective and produced more simple and less informative spectra than negative ionisation. Two different MALDI matrices (CHCA, DHBA) were tested for use with humic substances. DHBA yielded better results, exhibiting superior ionisation efficiency, low spectral background and the matrix peaks were almost completely suppressed causing no interferences with identified analyte peaks. The application of MALDI-TOF-MS shows its suitability for humic substance characterisation. The comparison of the MALDI-spectra of humic acids, extracted from spiked and native soil proved that Pt undergoes transformation in the environment to humic acid complexes.

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Isolation of water-soluble organic matter from atmospheric aerosol

Cited by 191 publications

References 17 publications

Comparison of isolation and quantification methods to measure humic-like substances (HULIS) in atmospheric particles

Comparison of isolation and quantification methods to measure humic-like substances (HULIS) in atmospheric particles

Characterisation of solvent extractable organic constituents in atmospheric particulate matter: an overview

Mass spectrometric techniques for characterisation of platinum–humic substance complexes in soil and street dust samples

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