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Watt, John

doi:10.1023/a:1005045529848

Cited by 17 publications

(3 citation statements)

References 67 publications

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“…These methods allow the particles in a eld of view to be counted and the shape of the particles to be described in a quantitative way through measuring shape descriptors (such as circularity, roundness, equivalent spherical diameter and aspect ratio) for which different expressions have been worked out. 87,88 However, direct SEM-EDXS analysis of the particles deposited on conifer needles is affected by a number of factors which make it difficult to obtain signicant quantitative data (Table 3). SEM-EDXS does not have sufficient resolution to analyze ultrane particles and TEM must be used (Fig.…”

Section: Single Particle Analysis Techniquesmentioning

confidence: 99%

Review: use of conifer needles as passive samplers of inorganic pollutants in air quality monitoring

Bertolotti

Gialanella

2014

Anal. Methods

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Section: Single Particle Analysis Techniquesmentioning

confidence: 99%

Review: use of conifer needles as passive samplers of inorganic pollutants in air quality monitoring

Bertolotti

Gialanella

2014

Anal. Methods

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“…Fig. 8 shows a selection of relevant secondary ion images of CaCO 3 particles exposed to HNO 3 − ). In spite of the modest intensity per pixel, the shape of the outer shell can be clearly distinguished in the image of the molecular adducts.…”

Section: Heterogeneous Reactions At the Surface Of Aerosolsmentioning

confidence: 99%

“…Off-line analysis of size fractionated aerosols is traditionally performed with scanning electron microscopy (SEM), electron probe micro-analysis (EPMA) and particle induced X-ray analysis (PIXE) [1][2][3][4][5]. Additionally, X-ray photoelectron spectroscopy (XPS) [6] and micro-Raman or infrared spectrometry [7,8] are used for bondspecific data whereas time of flight laser microprobe mass spectrometry (TOF LMMS) has been the first method to perform molecular speciation in single particles [9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

The use of time-of-flight static secondary ion mass spectrometry imaging for the molecular characterization of single aerosol surfaces

Ham

Adriaens

Vaeck

et al. 2006

Analytica Chimica Acta

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The imaging feasibility of time-of-flight static secondary ion mass spectrometry (TOF S-SIMS) has been investigated for the identification of the molecular composition of inorganic constituents at the surface of single aerosol particles. Selected test cases involved the study of single ambient aerosol particles (aerodynamic diameter 2-4 m) collected by cascade impaction and the characterization of laboratory made CaCO 3 particles exposed to HNO 3 and H 2 SO 4 . A methodological optimization of the experiments helped in identifying a proper collection substrate (silicon wafer), the use of a low particle loading and the application of sputter pre-cleaning as essential aspects to record high quality secondary ion images of molecule specific adduct ions (i.e. one or more analyte molecules attached to a stable ion). Correlation of the features in the ion images at different m/z and the knowledge about the systematic trends in the formation of structural ions from inorganic salts allowed the identification of the molecular composition of the constituents in the studied particles.

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Some aspects of characterisation, utilisation and environmental effects of fly ash

Mohapatra

Rao

2001

J. Chem. Technol. Biotechnol.

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A review on¯y ash, an important but problematic waste material is presented. The article deals with several aspects of the characterisation, extraction of metal values leaching and associated environmental pollution problems due to¯y ash. Characterisation includes classi®cation, physicochemical and mineralogical analysis, presence of organic carbon and the signi®cance of cenospheres. Utilisation aspects are con®ned to extraction of metal values and discuss the elemental distribution in y ash while also covering several aspects of leaching including the leaching of speci®c metals. Effect of y ash on surroundings, including ground water pollution and associated problems during disposal, are considered while dealing with the environmental aspects. Some remedial measures are also suggested.

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Untitled

Cited by 17 publications

References 67 publications

Review: use of conifer needles as passive samplers of inorganic pollutants in air quality monitoring

Review: use of conifer needles as passive samplers of inorganic pollutants in air quality monitoring

The use of time-of-flight static secondary ion mass spectrometry imaging for the molecular characterization of single aerosol surfaces

Some aspects of characterisation, utilisation and environmental effects of fly ash

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