Pyrolysis-Gas Chromatography/Multiphoton Ionization/ Time-of-Flight Mass Spectrometry for the Rapid and Selective Analysis of Polycyclic Aromatic Hydrocarbons in Aerosol Particulate Matter

Sakurai, Shunsuke; Uchimura, Tomohiro

doi:10.2116/analsci.30.891

Cited by 16 publications

(18 citation statements)

References 39 publications

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“…[24][25][26][27][28][29][30][31][32][33][34][35] Although this is the method that is normally applied to a gas sample, we recently reported a method based on MPI-TOFMS for the evaluation of emulsions with no pretreatment. 36 Briefly, a sample-introduction system using a pair of concentric capillaries was developed, where an emulsion was directly passed through the inner capillary.…”

Section: Introductionmentioning

confidence: 99%

Time-Profile Measurement of an Emulsion Using Multiphoton Ionization Time-of-Flight Mass Spectrometry in Combination with a Microscope

Shimo

Uchimura

2016

ANAL. SCI.

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Multiphoton ionization time-of-flight mass spectrometry was applied to the measurement of an oil-in-water emulsion that contained toluene as a dispersed phase. Before the measurement, the sample was sufficiently creamed, and then stirred for a short period of time for dispersion. As a result, several intense spikes appeared on the time profile constructed from the peak area for toluene. In the present study, an optical microscope was used to observe the capillary column for sample introduction, and small toluene droplets along with their aggregates were found in the images of the emulsion flowing through the capillary. The aggregates produced intense spikes comprised of multiple plots, which could be easily marked by applying a moving median filter. In the present study, droplets with minimum diameters as small as 2.9 μm, which corresponds to 13 fL, could be calculated as detectable spikes.

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Section: Introductionmentioning

confidence: 99%

Time-Profile Measurement of an Emulsion Using Multiphoton Ionization Time-of-Flight Mass Spectrometry in Combination with a Microscope

Shimo

Uchimura

2016

ANAL. SCI.

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“…[1][2][3] This method has advantages that include selectivity, rapidity, and robustness. 4,5 Therefore, LI-TOFMS is used extensively in the measurement of complex environmental samples, [6][7][8][9][10][11] biological molecules, 12 bioactive substances, 13 and polymers. 14,15 Emulsions are heterogeneous systems where one liquid is dispersed into another as droplets.…”

Section: Introductionmentioning

confidence: 99%

Online Monitoring of a Styrene Monomer and a Dimer in an Emulsion via Laser Ionization Time-of-Flight Mass Spectrometry

2017

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Laser ionization time-of-flight mass spectrometry was applied to the online monitoring of a styrene monomer and dimer in an emulsion. During the measurement of a styrene monomer oil-in-water emulsion for this study, a styrene dimer, 1,3-diphenylpropane, was dropped into the emulsion. As a result, signal spikes from both analytes occurred simultaneously, which suggested that either the dimer had moved to the monomer droplets or that the monomer and dimer droplets had aggregated. We concluded that this method could be useful for the direct monitoring of monomers and oligomers in the early stages of emulsion polymerization.

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“…Until now, LI-TOFMS has been applied to the online monitoring of several environmental samples, [19][20][21] and has also been applied to the analysis of compounds generated by heating and/or laser desorption from several types of samples, such as amino acids/ peptides, [22][23][24] polymers/oligomers, [25][26][27][28][29] and particles. [30][31][32] Recently, we applied this method to the measurement of pyrolysis products from samples of dried titanium dioxide (TiO2) nanoparticles coated by phenyltriethoxysilane (PTES), 33 which is one of the silane coupling agents. In that report, an oven for a gas chromatograph (GC) was used to gradually heat samples, and benzene was detected as the main product along with several organic compounds.…”

Section: Introductionmentioning

confidence: 99%

Application of Laser Ionization Time-of-Flight Mass Spectrometry for the Direct Measurement of a Silane Coupling Agent in Slurries

Fujii

Uchimura

2017

ANAL. SCI.

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Laser ionization time-of-flight mass spectrometry (LI-TOFMS) was applied to the direct measurement of a silane coupling agent in slurries. In the present study, a slurry with dispersed TiO2 nanoparticles treated with phenyltriethoxysilane (PTES) was prepared. As a result, the peaks for PTES could be observed from the slurry sample containing unreacted PTES, and no peaks were observed from the slurry sample where unreacted PTES was removed by washing. This method can be used to directly analyze surface coating agents, such as PTES in slurries, and would be useful for obtaining a direct understanding of the characteristics of slurries.

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Pyrolysis-Gas Chromatography/Multiphoton Ionization/ Time-of-Flight Mass Spectrometry for the Rapid and Selective Analysis of Polycyclic Aromatic Hydrocarbons in Aerosol Particulate Matter

Cited by 16 publications

References 39 publications

Time-Profile Measurement of an Emulsion Using Multiphoton Ionization Time-of-Flight Mass Spectrometry in Combination with a Microscope

Time-Profile Measurement of an Emulsion Using Multiphoton Ionization Time-of-Flight Mass Spectrometry in Combination with a Microscope

Online Monitoring of a Styrene Monomer and a Dimer in an Emulsion via Laser Ionization Time-of-Flight Mass Spectrometry

Application of Laser Ionization Time-of-Flight Mass Spectrometry for the Direct Measurement of a Silane Coupling Agent in Slurries

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