An X-ray photoelectron spectroscopy study of elements on the surface of aerosol particles

Qi, Jianhua; Feng, Lijuan; Li, Xianguo; Zhang, Manping

doi:10.1016/j.jaerosci.2005.04.005

Cited by 18 publications

(15 citation statements)

References 21 publications

(22 reference statements)

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“…Since our data suggest that sulphate accumulates in the dust first, it appears sulphate will react with the mineral component for which it has the highest affinity. We propose that the association of sulphate with Al-and Fe-rich dust is due to the iron-catalyzed oxidation of SO 2 to H 2 SO 4 (Brandt and Vaneldik, 1995;Qi et al, 2006;Rani et al, 1992;Yermakov and Purmal, 2003). The majority of the oxidation by this process is thought to occur in the aqueous phase containing dissolved metal ions (i.e.…”

Section: Effect Of Dust Mineralogy On Chemical Processingmentioning

confidence: 99%

Direct observations of the atmospheric processing of Asian mineral dust

et al. 2007

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Abstract. The accumulation of secondary acids and ammonium on individual mineral dust particles during ACEAsia has been measured with an online single-particle mass spectrometer, the ATOFMS. Changes in the amounts of sulphate, nitrate, and chloride mixed with dust particles correlate with air masses from different source regions. The uptake of secondary acids depended on the individual dust particle mineralogy; high amounts of nitrate accumulated on calcium-rich dust while high amounts of sulphate accumulated on aluminosilicate-rich dust. Oxidation of S(IV) to S(VI) by iron in the aluminosilicate dust is a possible explanation for this enrichment of sulphate, which has important consequences for the fertilization of remote oceans by soluble iron. This study shows the segregation of sulphate from nitrate and chloride in individual aged dust particles for the first time. A transport and aging timeline provides an explanation for the observed segregation. Our data suggests that sulphate became mixed with the dust first. This implies that the transport pathway is more important than the reaction kinetics in determining which species accumulate on mineral dust. Early in the study, dust particles in volcanically influenced air masses were mixed predominately with sulphate. Dust mixed with chloride then dominated over sulphate and nitrate when a major dust front reached the R. V. Ronald Brown. We hypothesize that the rapid increase in chloride on dust was due to mixing with HCl(g) released from acidified sea salt particles induced by heterogeneous reaction with volcanic SO 2 (g), prior to the arrival of the dust front. The amount of ammonium mixed with dust correlated strongly with the total amount of secondary acid reaction products in the dust. Submicron dust and ammonium sulphate were internally mixed, contrary to frequent reports that they exist as external mixtures. The size distribution of the mixing Correspondence to: K. Prather (kprather@ucsd.edu) state of dust with these secondary species validates previous mechanisms of the atmospheric processing of dust and generally agrees with simulated aerosol chemistry from the STEM-2K3 model. This series of novel results has important implications for improving the treatment of dust in global chemistry models and highlights a number of key processes that merit further investigation through laboratory and field studies.

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Section: Effect Of Dust Mineralogy On Chemical Processingmentioning

confidence: 99%

Direct observations of the atmospheric processing of Asian mineral dust

et al. 2007

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“…In addition, the use of XPS core-level peaks to derive chemical structure information of organic solids by fitting peak intensity and position features, is the standard XPS application (Briggs and Seah 1990;Monteil-Rivera et al 2000;Olivella et al 2002a,b;Paoletti et al 2003;Qi et al 2006). Therefore, the XPS technique has been used to investigate the elemental composition and chemical states of aerosol surfaces (Albers et al 2000;Hutton and Williams 2000;Zhu et al 2001;Lazzeri et al 2003;Paoletti et al 2003;Atzei and Rossi 2004;Qi et al 2006;Gilham et al 2008). For example, Zhu et al (2001) utilized XPS and other superficial analytical techniques to characterize the PM2.5 sample collected from Salt Lake City, Utah, USA.…”

Section: Introductionmentioning

confidence: 99%

Surface Characterization of Aerosol Particles in Guangzhou, China: A Study by XPS

Song

Peng

2009

Aerosol Science and Technology

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X-ray photoelectron spectroscopy (XPS) is a powerful techniquefor determining the surface chemical composition of atmospheric particles. In this article, we employed XPS to study atmospheric particles collected from Guangzhou city in typical sites and seasons. The results showed that the weight percentage of carbon, oxygen, nitrogen, and sulfur were about 70.5-87.1%, and these species dominated the surface structure of the particles independent of the collection site and season. Inorganic elements including Si, Na, Ca, Cl, Fe, K, Al, and Cu were also found on the particle surfaces. The high-resolution XPS spectra revealed: (1) High aromatic and aliphatic C-H, and other oxidized carbons were found on the surface of particles. (2) The nitrogen species were characterized by pyridinic, pyrrolic/amide, quaternary type nitrogen functionalities, and nitrate groups, indicating that inorganic and organic N species are both important components of N-containing particles. (3) Sulfate and sulfone groups were also present on the surface and were important components. The oxidized groups of C, N, and S were higher in winter samples, consistent with the monsoon weather of Guangzhou in winter, which is favorable for the formation of oxidized species. A comparison between total and surface analyses showed that the surface of particles was relatively high in organic carbon, NO

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“…Besides, the chemical composition of the surface of particles also plays an important role in determining health effects, because the surface is directly accessible to biological fl uids after inhalation. The X-ray photoelectron spectroscopy (XPS) is a surface analysis technique and in recent years, a number of researchers have used XPS to analyze particulate matter collected onto fi lters [21][22][23][24][25][26][27]. However, the surface composition of airborne particles emitted from the power plants probably has not been investigated yet.…”

Section: Archives Of Environmental Protectionmentioning

confidence: 99%

“…sulfur substantially enriched the surface composition of these particles. Although it is diffi cult to explain these differences precisely, this result may be important because it is speculated that surface S plays a role in reducing surface Fe(III) to Fe(II) [27]. In fact, the large surface of fl y ash causes the enrichment of these particles in various elements which condense during cooling of combustion gases [33,34].…”

Section: Surface Propertiesmentioning

confidence: 99%

Surface Properties of Particles Emitted from Selected Coal-Fired Heating Plants and Electric Power Stations in Poland: Preliminary Results

Pastuszka¹,

Konieczyński²,

Talik³

2014

Archives of Environmental Protection

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Abstract:The surface properties of particles emitted from six selected coal-fi red power and heating plants in Poland have been studied in this work for the fi rst time. Samples were collected beyond the control systems. Surface composition of the size-distributed particles was obtained by photoelectron spectroscopy (XPS).The refl ection of the smallest, submicron particles was also measured to calculate their specifi c/mass absorption. The surface layer of the emitted particles was clearly dominated by oxygen, followed by silicon and carbon. The sum of the relative concentration of these elements was between 85.1% and 91.1% for coarse particles and 71.8-93.4% for fi ne/submicron particles. Aluminum was typically the fourth or fi fth, or at least the sixth most common element. The mass absorption of the submicron particles emitted from the studied plants ranged from 0.02 m 2 g -1 to 0.03 m 2 g -1 . Only specifi c absorption obtained for the "Nowy Wirek" heating plant was signifi cantly higher than in other studied plants probably because the obsolete fi re grate is used in this heating plant.The obtained results suggest that the power/heating-plant-emitted fi ne particles contain less carbonaceous material/elemental carbon on their surfaces than those that are typical in urban air.

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An X-ray photoelectron spectroscopy study of elements on the surface of aerosol particles

Cited by 18 publications

References 21 publications

Direct observations of the atmospheric processing of Asian mineral dust

Direct observations of the atmospheric processing of Asian mineral dust

Surface Characterization of Aerosol Particles in Guangzhou, China: A Study by XPS

Surface Properties of Particles Emitted from Selected Coal-Fired Heating Plants and Electric Power Stations in Poland: Preliminary Results

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