SIMS depth profile analysis of particles collected in an urban environment

Konarski, P.; Kaczorek, Krzysztof; Balcerzak, Bartosz; Hałuszka, J; Ścibor, Monika; Iwanejko, Iwona; Zawada, Aleksander

doi:10.1002/sia.3666

Cited by 3 publications

(3 citation statements)

References 10 publications

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“…Despite significant advancements in depth profiling instrumentation, detailed characterisation of submicron-sized particles still is a challenge. To the best of our knowledge, most studies have used SIMS for depth profiling of a collection of ambient aerosol particles [105,106,155,156]. In this section, we will discuss recent developments in depth profiling using MS that provide the basis to develop sensitive and robust approaches for detailed characterisation of the 3D structures of small particles.…”

Section: Depth Profilingmentioning

confidence: 99%

New mass spectrometry techniques for studying physical chemistry of atmospheric heterogeneous processes

Laskin

Nizkorodov

2013

International Reviews in Physical Chemistry

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Ambient particles and droplets have a significant effect on climate, visibility and human health. Once formed, they undergo continuous transformations through condensation and evaporation of water, uptake of low-volatility organic molecules and photochemical reactions involving various gaseous and condensed-phase species in the atmosphere. These transformations determine the physical and chemical properties of airborne particles, such as their ability to absorb and scatter solar radiation and nucleate cloud droplets. The complexity, heterogeneity and size of ambient particles make it challenging to understand the kinetics and mechanisms of their formation and chemical transformations. Mass spectrometry (MS) is a powerful analytical technique that enables detailed chemical characterisation of both small and large molecules in complex matrices. This capability makes MS a promising tool for studying chemical transformations of particles and droplets in the atmosphere. This review is focused on new and emerging experimental MS-based approaches for understanding the kinetics and mechanisms of such transformations. Some of the techniques discussed herein are best suited for ambient samples, while the others work best in laboratory applications. However, in combination, they provide a comprehensive arsenal of methods for characterisation of particles and droplets. In addition, we emphasise the role of fundamental physical chemistry studies in the development of new methods for chemical analysis of ambient particles and droplets.

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Section: Depth Profilingmentioning

confidence: 99%

New mass spectrometry techniques for studying physical chemistry of atmospheric heterogeneous processes

Laskin

Nizkorodov

2013

International Reviews in Physical Chemistry

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“…Fly ash samples collected at impactor plates were deposited on high purity indium foils and transferred into ultra high vacuum chamber of SIMS analyzer, equipped with Physical Electronics ion gun and quadrupole mass analyzer QMA‐410 Balzers. Ar + ion beam of 0.1 mm diameter, and 5 keV energy was rastered over 1.5 × 1.8 mm area, and secondary ions were detected from central part (10% electronic gate).…”

Section: Methodsmentioning

confidence: 99%

“…Generally, SIMS spectrometry is mainly directed towards single particle analysis and imaging, however is applied also for analysis of sets of particles. Such type of analysis, applying also sample rotation technique, made it possible to monitor atmospheric aerosol particles and working environment particles like welding fume, etc . In the present study, SIMS depth profile analysis is applied for fly ash particles from hard coal combustion in three pulverized boilers of Thermoelectric Power Plant (TPP).…”

Section: Introductionmentioning

confidence: 99%

Core–shell structure of fly ash particles ‐ SIMS depth profile analysis

Konarski

Zawada

Kowalczyk

et al. 2012

Surface & Interface Analysis

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Depth profile analysis in secondary ion mass spectrometry (SIMS) is applied for fly ash particles collected from three electrostatic precipitators in coal combustion type Thermoelectric Power Plant in Warsaw, Poland. Prior to analysis, particles of the collected material were size separated in nine stage cascade impactor with rotating substrate plates. Bulk analysis of the chosen size fractions was performed by atomic absorption spectroscopy. For SIMS depth profile analysis, particles were deposited on indium foils of high purity. Sputtering with 5 keV Ar + , 100 mm diameter ion beam was performed over 1.2 Â 1.8 mm area of the indium foil in SIMS system (SAJW-05 model) equipped with Physical Electronics ion gun and QMA-410 Balzers quadrupole analyzer. SIMS data are quantified based on bulk concentration values of: carbon, sodium, aluminium, silicon, calcium, chromium, manganese, iron and nickel. Core-shell structure, and also cenosphere structure, is found. Depth profile analysis shows that shell layers of particles are enriched in carbon, calcium, chromium and nickel. Inner parts of particles or their cores are enriched in sodium and aluminium.

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