Direct target and non-target analysis of urban aerosol sample extracts using atmospheric pressure photoionisation high-resolution mass spectrometry

Giorio, Chiara; Bortolini, Claudio; Kourtchev, Ivan; Tapparo, Andrea; Bogialli, Sara; Kalberer, Markus

doi:10.1016/j.chemosphere.2019.02.151

Cited by 22 publications

(17 citation statements)

References 54 publications

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“…•− radical-anions when the ratio of the radicals concentrations is higher than~0. 15 We expect the comparison of gas-phase and aqueous-phase conversions for other nitrophenols studied would provide similar results when the gas-phase rate constants for these nitrophenols are available.…”

Section: Atmospheric Significancementioning

confidence: 82%

“…Nitrophenols are well known environmental trace compounds and pollutants [1,2], which have been detected in various environmental matrices including air [3][4][5][6], rainwater [3,[7][8][9], cloud water [10], fog [10,11], snow [1], atmospheric aerosol [4][5][6][12][13][14][15][16][17][18][19][20][21][22][23][24][25], soils [26,27], and surface waters [10,[28][29][30][31][32]. They originate from many anthropogenic and natural sources including: the incineration of wastes [33], industrial chemical processes [34], combustion of coal and biomass as well as vehicle and aviation fuels [35][36][37], degradation of pesticides [34,38,39], release of wood preservatives…”

Section: Introductionmentioning

confidence: 99%

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Aqueous Reactions of Sulfate Radical-Anions with Nitrophenols in Atmospheric Context

Rudziński

Szmigielski

2019

Atmosphere

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Nitrophenols, hazardous environmental pollutants, react promptly with atmospheric oxidants such as hydroxyl or nitrate radicals. This work aimed to estimate how fast nitrophenols are removed from the atmosphere by the aqueous-phase reactions with sulfate radical-anions. The reversed-rates method was applied to determine the relative rate constants for reactions of 2-nitrophenol, 3-nitrophenol, 4-nitrophenol, 2,4-dinitrophenol, and 2,4,6-trinitrophenol with sulfate radical-anions generated by the autoxidation of sodium sulfite catalyzed by iron(III) cations at ~298 K. The constants determined were: 9.08 × 108, 1.72 × 109, 6.60 × 108, 2.86 × 108, and 7.10 × 107 M−1 s−1, respectively. These values correlated linearly with the sums of Brown substituent coefficients and with the relative strength of the O–H bond of the respective nitrophenols. Rough estimation showed that the gas-phase reactions of 2-nitrophenol with hydroxyl or nitrate radicals dominated over the aqueous-phase reaction with sulfate radical-anions in deliquescent aerosol and haze water. In clouds, rains, and haze water, the aqueous-phase reaction of 2-nitrophenol with sulfate radical-anions dominated, provided the concentration of the radical-anions was not smaller than that of the hydroxyl or nitrate radicals. The results presented may be also interesting for designers of advanced oxidation processes for the removal of nitrophenol.

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Section: Atmospheric Significancementioning

confidence: 82%

Section: Introductionmentioning

confidence: 99%

Aqueous Reactions of Sulfate Radical-Anions with Nitrophenols in Atmospheric Context

Rudziński

Szmigielski

2019

Atmosphere

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“…About 20 %-90 % of the fine particle mass is organic (Jimenez et al, 2009;Kanakidou et al, 2005). Organic material in the atmosphere is highly complex, consisting of thousands of different compounds (Goldstein and Galbally, 2007). Ultrahigh-resolution mass spectrometry (UHRMS) analysers such as the Fourier transform ion cyclotron (FTICR) or the Orbitrap have a high mass resolving power and high mass accuracy.…”

Section: Introductionmentioning

confidence: 99%

“…Schmitt-Kopplin et al, 2010;Wozniak et al, 2008) and urban (e.g. Giorio et al, 2019;Tao et al, 2014;Tong et al, 2016). Since it is possible to assign elemental compositions to unknown compounds, compounds containing heteroatoms such as sulfur and nitrogen can be unambiguously detected.…”

Section: Introductionmentioning

confidence: 99%

Differences in the composition of organic aerosols between winter and summer in Beijing: a study by direct-infusion ultrahigh-resolution mass spectrometry

Steimer

Patton

et al. 2020

Atmos. Chem. Phys.

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Abstract. This study investigates the chemical composition of PM2.5 collected at a central location in Beijing, China, during winter 2016 and summer 2017. The samples were characterised using direct-infusion negative-nano-electrospray-ionisation ultrahigh-resolution mass spectrometry to elucidate the composition and the potential primary and secondary sources of the organic fraction. The samples from the two seasons were compared with those from a road-tunnel site and an urban background site in Birmingham, UK, analysed in the course of an earlier study using the same method. There were strong differences in aerosol particle composition between the seasons, particularly regarding (poly-)aromatic compounds, which were strongly enhanced in winter, likely due to increased fossil fuel and biomass burning for heating. In addition to the seasonal differences, compositional differences between high- and low-pollution conditions were observed, with the contribution of sulfur-containing organic compounds strongly enhanced under high-pollution conditions. There was a correlation of the number of sulfur-containing molecular formulae with the concentration of particulate sulfate, consistent with a particle-phase formation process.

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Section: Introductionmentioning

confidence: 99%

Seasonal Differences in the Composition of Organic Aerosols in Beijing: a Study by Direct Infusion Ultrahigh Resolution Mass Spectrometry

Steimer¹,

Patton²,

Vu³

et al. 2020

Preprint

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Abstract. This study investigates the chemical composition of PM2.5 collected at a central location in Beijing, China, during winter 2016 and summer 2017. The samples were characterised using direct infusion negative nano-electrospray ionisation ultrahigh resolution mass spectrometry to elucidate the composition and the potential primary and secondary sources of the organic fraction. The samples from the two seasons were compared with those from a road-tunnel site and an urban background site in Birmingham, UK, analysed in the course of an earlier study using the same method. There were strong differences in aerosol particle composition between the seasons, particularly regarding (poly-)aromatic compounds, which were strongly enhanced in winter, likely due to increased fossil fuel and biomass burning for heating. In addition to the seasonal differences, compositional differences between high and low pollution conditions were observed, with the contribution of sulfur-containing organic compounds strongly enhanced under high pollution conditions. There was a correlation of the number of sulphur-containing molecular formulae with the concentration of particulate sulfate, consistent with a particle-phase formation process.

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Direct target and non-target analysis of urban aerosol sample extracts using atmospheric pressure photoionisation high-resolution mass spectrometry

Abstract: Direct target and non-target analysis of urban aerosol sample extracts using atmospheric pressure photoionisation high-resolution mass spectrometry, Chemosphere (2019), doi:

Cited by 22 publications

References 54 publications

Aqueous Reactions of Sulfate Radical-Anions with Nitrophenols in Atmospheric Context

Aqueous Reactions of Sulfate Radical-Anions with Nitrophenols in Atmospheric Context

Differences in the composition of organic aerosols between winter and summer in Beijing: a study by direct-infusion ultrahigh-resolution mass spectrometry

Seasonal Differences in the Composition of Organic Aerosols in Beijing: a Study by Direct Infusion Ultrahigh Resolution Mass Spectrometry

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