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1. Aerosol Analysis via Electrostatic Precipitation-Electrospray Ionization Mass Spectrometry

Author:
He Siqin; Li Lin; Duan Hongxu; Naqwi Amir; Hogan Christopher J.
Source:
Analytical chemistry 2015 v.87 no.13 pp. 6752-6760
ISSN:
1520-6882
Subject:
aerosols; air; carbon nanoparticles; cesium; iodides; ionization; mass spectrometry; particle size; spectrometers; tungsten; volatilization
Abstract:
... Electrospray ionization (ESI) is the preferred mode of ion generation for mass analysis of many organic species, as alternative ionization techniques can lead to appreciable analyte fragmentation. For this reason, ESI is an ideal method for the analysis of species within aerosol particles. However, because of their low concentrations (∼10 μg/m³) in most environments, ESI has been applied sparingly ...
DOI:
10.1021/acs.analchem.5b01183

2. Aqueous Processing of Atmospheric Organic Particles in Cloud Water Collected via Aircraft Sampling

Author:
Boone Eric J.; Laskin Alexander; Laskin Julia; Wirth Christopher; Shepson Paul B.; Stirm Brian H.; Pratt Kerri A.
Source:
Environmental Science & Technology 2015 v.49 no.14 pp. 8523-8530
ISSN:
1520-5851
Subject:
aerosols; aircraft; chemical composition; desorption; droplets; hydrolysis; ionization; isoprene; mass spectrometry; oxidants; oxidation; volatile organic compounds; Alabama
Abstract:
... Cloudwater and below-cloud atmospheric particle samples were collected onboard a research aircraft during the Southern Oxidant and Aerosol Study (SOAS) over a forested region of Alabama in June 2013. The organic molecular composition of the samples was studied to gain insights into the aqueous-phase processing of organic compounds within cloud droplets. High resolution mass spectrometry (HRMS) wit ...
DOI:
10.1021/acs.est.5b01639

3. Characterization of ice‐nucleating bacteria using on‐line electron impact ionization aerosol mass spectrometry

Author:
R. Wolf; J. G. Slowik; C. Schaupp; P. Amato; H. Saathoff; O. Möhler; A. S. H. Prévôt; U. Baltensperger
Source:
Journal of mass spectrometry 2015 v.50 no.4 pp. 662-671
ISSN:
1076-5174
Subject:
Pseudomonas fluorescens; Pseudomonas syringae; aerosols; agar; airborne microorganisms; bacteria; cultured cells; ice nucleation; ionization; ions; mass spectrometry; spectrometers; suspensions
Abstract:
... The mass spectral signatures of airborne bacteria were measured and analyzed in cloud simulation experiments at the AIDA (Aerosol Interaction and Dynamics in the Atmosphere) facility. Suspensions of cultured cells in pure water were sprayed into the aerosol and cloud chambers forming an aerosol which consisted of intact cells, cell fragments and residual particles from the agar medium in which the ...
DOI:
10.1002/jms.3573

4. Clustering of sulfamic acid: ESI MS and theoretical study

Author:
M. Pszona; K. Haupa; A. Bil; K. Mierzwicki; Z. Szewczuk; Z. Mielke
Source:
Journal of mass spectrometry 2015 v.50 no.1 pp. 127-135
ISSN:
1076-5174
Subject:
acids; aerosols; ammonia; aqueous solutions; electrospray ionization mass spectrometry; gases; industry; ionization; spectrometers
Abstract:
... Sulfamic acid has wide application in industry and has been suggested to act as an effective nucleation agent for the formation of aerosols and cloud particles. From the point of view of the role that sulfamic acid may play in aerosol formation, the study of its homoaggregation is important. Gas phase clustering study was performed for sulfamic acid H₃N·SO₃, (ASA), from water and methanol–water so ...
DOI:
10.1002/jms.3505

5. Desorption corona beam ionisation (DCBI) mass spectrometry for in-situ analysis of adsorbed phenol in cigarette acetate fiber filter

Author:
Wen Du; Li-Juan Tang; Jian-Hui Wen; Ke-Jun Zhong; Jian-Hui Jiang; Hua Wang; Bo Chen; Ru-Qin Yu
Source:
Talanta 2015 v.131 pp. 499-504
ISSN:
0039-9140
Subject:
absorbents; adsorbents; aerosols; atmospheric pressure; cellulose acetate; cigarettes; cost effectiveness; desorption; high performance liquid chromatography; ionization; mass spectrometry; models; phenol; rapid methods; risk; screening
Abstract:
... The study of spatial distribution characteristics of the adsorbed compounds for absorbent materials has significant importance in understanding the behaviors of aerosols while they migrating in the absorbent materials. Herein, for the first time, desorption corona beam ionization–mass spectrometry (DCBI–MS) has proposed for direct in-situ analysis of adsorbed aerosol for absorbent materials. DCBI ...
DOI:
10.1016/j.talanta.2014.08.018

6. Evidence for an Unrecognized Secondary Anthropogenic Source of Organosulfates and Sulfonates: Gas-Phase Oxidation of Polycyclic Aromatic Hydrocarbons in the Presence of Sulfate Aerosol

Author:
Riva Matthieu; Tomaz Sophie; Cui Tianqu; Lin Ying-Hsuan; Perraudin Emilie; Gold Avram; Stone Elizabeth A.; Villenave Eric; Surratt Jason D.
Source:
Environmental Science & Technology 2015 v.49 no.11 pp. 6654-6664
ISSN:
1520-5851
Subject:
acidity; aerosols; anthropogenic activities; gases; ionization; mass spectrometry; naphthalene; photooxidation; polycyclic aromatic hydrocarbons; relative humidity; sulfates; sulfonates; tracer techniques; ultra-performance liquid chromatography; Pakistan; United States
Abstract:
... In the present study, formation of aromatic organosulfates (OSs) from the photo-oxidation of polycyclic aromatic hydrocarbons (PAHs) was investigated. Naphthalene (NAP) and 2-methylnaphthalene (2-MeNAP), two of the most abundant gas-phase PAHs and thought to represent “missing” sources of urban SOA, were photochemically oxidized in an outdoor smog chamber facility in the presence of nonacidified a ...
DOI:
10.1021/acs.est.5b00836

7. Introduction of organic/hydro-organic matrices in inductively coupled plasma optical emission spectrometry and mass spectrometry: A tutorial review. Part I. Theoretical considerations

Author:
Amélie Leclercq; Anthony Nonell; José Luis Todolí Torró; Carole Bresson; Laurent Vio; Thomas Vercouter; Frédéric Chartier
Source:
Analytica chimica acta 2015 v.885 pp. 33-56
ISSN:
0003-2670
Subject:
aerosols; atomic absorption spectrometry; atomization; carbon; instrumentation; ionization; mass spectrometry; physicochemical properties; scientists; wet digestion method
Abstract:
... Due to their outstanding analytical performances, inductively coupled plasma optical emission spectrometry (ICP-OES) and mass spectrometry (ICP-MS) are widely used for multi-elemental measurements and also for isotopic characterization in the case of ICP-MS. While most studies are carried out in aqueous matrices, applications involving organic/hydro-organic matrices become increasingly widespread. ...
DOI:
10.1016/j.aca.2015.03.049

8. Mass Spectrometric Sampling of a Liquid Surface by Nanoliter Droplet Generation from Bursting Bubbles and Focused Acoustic Pulses: Application to Studies of Interfacial Chemistry

Author:
Thomas Daniel A.; Wang Lingtao; Goh Byoungsook; Kim Eun Sok; Beauchamp J. L.
Source:
Analytical chemistry 2015 v.87 no.6 pp. 3336-3344
ISSN:
1520-6882
Subject:
aerosols; air; bubbles; droplets; humans; ionization; ions; mass spectrometry; oleic acid; oxidation; ozone; sounds; spectrometers; surface waves; surfactants; vapors
Abstract:
... The complex chemistry occurring at the interface between liquid and vapor phases contributes significantly to the dynamics and evolution of numerous chemical systems of interest, ranging from damage to the human lung surfactant layer to the aging of atmospheric aerosols. This work presents two methodologies to eject droplets from a liquid water surface and analyze them via mass spectrometry. In bu ...
DOI:
10.1021/ac504494t

9. Method validation and application of a liquid chromatography–tandem mass spectrometry method for drugs of abuse testing in exhaled breath

Author:
Niclas Stephanson; Sören Sandqvist; Marjan Shafaati Lambert; Olof Beck
Source:
Journal of Chromatography B 2015 v.985 pp. 189-196
ISSN:
1570-0232
Subject:
aerosols; amphetamine; cocaine; diazepam; illicit drugs; ionization; ions; methanol; monitoring; morphine; reversed-phase liquid chromatography; screening; tandem mass spectrometry; tetrahydrocannabinol
Abstract:
... A mass spectrometric method for drugs of abuse testing in exhaled breath employing a sampling device collecting aerosol particles was developed and applied in routine use. Analytes covered were amphetamine, methamphetamine, 6-acetylmorphine, morphine, cocaine, benzoylecgonine, diazepam, oxazepam and tetrahydrocannabinol. The method involved eluting drugs from the collection filter with methanol, q ...
DOI:
10.1016/j.jchromb.2015.01.032

10. On the interaction between radon progeny and particles generated by electronic and traditional cigarettes

Author:
C. Vargas Trassierra; F. Cardellini; G. Buonanno; P. De Felice
Source:
Atmospheric environment 2015 v.106 pp. 442-450
ISSN:
1352-2310
Subject:
aerosols; air; atmospheric chemistry; cigarettes; combustion; counters; ionization; ionizing radiation; lung neoplasms; lungs; metrology; nicotine; people; pollutants; progeny; radon; risk; smoke; Italy
Abstract:
... During their entire lives, people are exposed to the pollutants present in indoor air. Recently, Electronic Nicotine Delivery Systems, mainly known as electronic cigarettes, have been widely commercialized: they deliver particles into the lungs of the users but a “second-hand smoke” has yet to be associated to this indoor source. On the other hand, the naturally-occurring radioactive gas, i.e. rad ...
DOI:
10.1016/j.atmosenv.2014.06.017

11. Real-time analysis of organic compounds in ship engine aerosol emissions using resonance-enhanced multiphoton ionisation and proton transfer mass spectrometry

Author:
Christian Radischat; Olli Sippula; Benjamin Stengel; Sophie Klingbeil; Martin Sklorz; Rom Rabe; Thorsten Streibel; Horst Harndorf; Ralf Zimmermann
Source:
Analytical and bioanalytical chemistry 2015 v.407 no.20 pp. 5939-5951
ISSN:
1618-2642
Subject:
aerosols; alkenes; combustion; diesel engines; diesel fuel; emissions; emissions factor; fuel oils; ionization; mass spectrometry; mass transfer; monitoring; naphthalene; polycyclic aromatic hydrocarbons; spectrometers
Abstract:
... Organic combustion aerosols from a marine medium-speed diesel engine, capable to run on distillate (diesel fuel) and residual fuels (heavy fuel oil), were investigated under various operating conditions and engine parameters. The online chemical characterisation of the organic components was conducted using a resonance-enhanced multiphoton ionisation time-of-flight mass spectrometer (REMPI TOF MS) ...
DOI:
10.1007/s00216-015-8465-0

12. Single-Particle Time-of-Flight Mass Spectrometry Utilizing a Femtosecond Desorption and Ionization Laser

Author:
Zawadowicz Maria A.; Abdelmonem Ahmed; Mohr Claudia; Saathoff Harald; Froyd Karl D.; Murphy Daniel M.; Leisner Thomas; Cziczo Daniel J.
Source:
Analytical chemistry 2015 v.87 no.24 pp. 12221-12229
ISSN:
1520-6882
Subject:
aerosols; air; ammonium nitrate; desorption; heavy metals; ionization; ions; lasers; lead; mass spectrometry; mixing; sodium chloride; spectrometers; wavelengths
Abstract:
... Single-particle time-of-flight mass spectrometry has now been used since the 1990s to determine particle-to-particle variability and internal mixing state. Instruments commonly use 193 nm excimer or 266 nm frequency-quadrupled Nd:YAG lasers to ablate and ionize particles in a single step. We describe the use of a femtosecond laser system (800 nm wavelength, 100 fs pulse duration) in combination wi ...
DOI:
10.1021/acs.analchem.5b03158

13. Development and field testing of a miniaturized sampling system for simultaneous sampling of vapours and droplets

Author:
Dietmar Breuer; George C. Dragan; Claudia Friedrich; Carsten Möhlmann; Ralf Zimmermann
Source:
Environmental science 2015 v.17 no.2 pp. 278-287
ISSN:
2050-7895
Subject:
adsorption; aerosols; air; ambient temperature; boiling point; charcoal; diethylene glycol; droplets; evaporation; filters; hexadecane; humidity; ionization; laboratory experimentation; liquids; non-polar compounds; occupational health and safety; vapors; working conditions
Abstract:
... The sampling of semi volatiles (SV) in workplaces may lead to different results as measurements may be affected by sampling bias. The new European Standard EN 13936 defines “semi-volatiles” as substances with vapour pressures in the range between 0.001 and 100 Pa at room temperature. EN 13936 regulates the basic requirements for SV compounds that can occur as vapour and particle at the same time. ...
DOI:
10.1039/c4em00602j

14. Development of a new corona discharge based ion source for high resolution time-of-flight chemical ionization mass spectrometer to measure gaseous H2SO4 and aerosol sulfate

Author:
Jun Zheng; Dongsen Yang; Yan Ma; Mindong Chen; Jin Cheng; Shizheng Li; Ming Wang
Source:
Atmospheric environment 2015 v.119 pp. 167-173
ISSN:
1352-2310
Subject:
aerosols; air; ammonium sulfate; atmospheric chemistry; atmospheric pressure; desorption; hydroxyl radicals; ionization; ions; nitrates; nitric acid; nitrogen dioxide; spectrometers; sulfur dioxide; sulfuric acid
Abstract:
... A new corona discharge (CD) based ion source was developed for a commercial high-resolution time-of-flight chemical ionization mass spectrometer (HRToF-CIMS) (Aerodyne Research Inc.) to measure both gaseous sulfuric acid (H2SO4) and aerosol sulfate after thermal desorption. Nitrate core ions (NO3−) were used as reagent ions and were generated by a negative discharge in zero air followed by additio ...
DOI:
10.1016/j.atmosenv.2015.08.028

15. Ionization of solutions using mechanical spray in collison nebulizer: A new simple ion source for mass-spectrometric analysis

Author:
Viktor V. Pervukhin; Dmitriy G. Sheven; Yuri N. Kolomiets
Source:
Talanta 2015 v.138 pp. 123-129
ISSN:
0039-9140
Subject:
aerosols; aqueous solutions; detection limit; droplet size; electric power; enthalpy; heaters; ionization; ions; liquids; mass spectrometry; morphine; potassium; potassium sulfate; sodium chloride; solvents; spraying; surface tension; synthesis; volatilization
Abstract:
... Ionization methods for mass-spectrometric analysis based on mechanical liquid spray by a high-speed gas flow (like Sonic Spray Ionization (SSI)) offer some advantages over other ionization methods. Among these one should mention the absence of electric voltage, radioactive sources and heaters. In this paper we suggest using the Collison nebulizer for solution ionization via mechanical spray. Resea ...
DOI:
10.1016/j.talanta.2015.02.018

16. Low-Temperature Plasma Ionization-Mass Spectrometry for the Analysis of Compounds in Organic Aerosol Particles

Author:
Spencer Sandra E.; Tyler Chelsea A.; Tolocka Michael P.; Glish Gary L.
Source:
Analytical chemistry 2015 v.87 no.4 pp. 2249-2254
ISSN:
1520-6882
Subject:
aerosols; ionization; ions; mass spectrometry; polymers
Abstract:
... Low-temperature plasma ionization, a technique that causes minimal fragmentation during ionization, is investigated as an ionization technique for mass spectrometric detection of the compounds in ambient organic aerosols in real time. The experiments presented in this paper demonstrate that ions are generated from compounds in the aerosol particles. The utility of this technique for detection of b ...
DOI:
10.1021/ac5038889

17. Measurement of atmospheric amines and ammonia using the high resolution time-of-flight chemical ionization mass spectrometry

Author:
Jun Zheng; Yan Ma; Mindong Chen; Qi Zhang; Lin Wang; Alexei F. Khalizov; Lei Yao; Zhen Wang; Xing Wang; Linxi Chen
Source:
Atmospheric environment 2015 v.102 pp. 249-259
ISSN:
1352-2310
Subject:
aerosols; air; ammonia; atmospheric chemistry; emissions; ionization; mass spectrometry; methylamine; nitrogen content; nitrogen oxides; river deltas; spectrometers; summer; China; Yangtze River
Abstract:
... Ammonia (NH3) and amines play important roles in the nucleation and growth of atmospheric aerosols. To identify the sources of these chemicals in the densely populated and industrialized Yangtze River Delta region of China, we conducted measurements of NH3 and several amines, including methylamine (CH3NH2), C2-amines (C2H7N), and C3-amines (C3H9N) at a suburban site of Nanjing, China, during summe ...
DOI:
10.1016/j.atmosenv.2014.12.002

18. Miniature Flow-Through Low-Temperature Plasma Ionization Source for Ambient Ionization of Gases and Aerosols

Author:
Spencer Sandra E.; Santiago Brandon G.; Glish Gary L.
Source:
Analytical chemistry 2015 v.87 no.23 pp. 11887-11892
ISSN:
1520-6882
Subject:
aerosols; caffeine; cellulose; gases; ionization; ions; pyrolysis
Abstract:
... The design and operation of an inexpensive, miniature low-temperature plasma ion source is detailed. The miniature low-temperature plasma ion source is operated in a “flow-through” configuration, wherein the gaseous or aerosolized analyte, caffeine or pyrolyzed ethyl cellulose, in a carrier gas is used as the plasma gas. In this flow-through configuration, the sensitivity for the caffeine standard ...
DOI:
10.1021/acs.analchem.5b03447

19. Oxidation of Gas-Phase SO2 on the Surfaces of Acidic Microdroplets: Implications for Sulfate and Sulfate Radical Anion Formation in the Atmospheric Liquid Phase

Author:
Hung Hui-Ming; Hoffmann Michael R.
Source:
Environmental Science & Technology 2015 v.49 no.23 pp. 13768-13776
ISSN:
1520-5851
Subject:
sulfur dioxide; gases; sulfites; sulfates; atmospheric chemistry; hydrogen peroxide; ionization; spectrometers; models; aerosols; electron transfer; superoxide anion; oxidants; pH; oxidation; cities; droplets; oxygen; China
Abstract:
... The oxidation of SO₂(g) on the interfacial layers of microdroplet surfaces was investigated using a spray-chamber reactor coupled to an electrospray ionization mass spectrometer. Four major ions, HSO₃–, SO₃•–, SO₄•– and HSO₄–, were observed as the SO₂(g)/N₂(g) gas-mixture was passed through a suspended microdroplet flow, where the residence time in the dynamic reaction zone was limited to a few hu ...
DOI:
10.1021/acs.est.5b01658

20. Real-Time Analysis of Ambient Organic Aerosols Using Aerosol Flowing Atmospheric-Pressure Afterglow Mass Spectrometry (AeroFAPA-MS)

Author:
Brüggemann Martin; Karu Einar; Stelzer Torsten; Hoffmann Thorsten
Source:
Environmental Science & Technology 2015 v.49 no.9 pp. 5571-5578
ISSN:
1520-5851
Subject:
aerosols; atmospheric pressure; climate; desorption; helium; human health; instrumentation; ionization; ions; mass spectrometry; mixed forests; organic compounds
Abstract:
... Organic compounds contribute to a major fraction of atmospheric aerosols and have significant impacts on climate and human health. However, because of their chemical complexity, their measurement remains a major challenge for analytical instrumentation. Here we present the development and characterization of a new soft ionization technique that allows mass spectrometric real-time detection of orga ...
DOI:
10.1021/es506186c