Analysis of polychlorinated biphenyls by quadrupole ion trap mass spectrometry: Part I - Chemical ionization studies of co-eluting congeners 77 and 110

Laušević, Mila; Jiang, Xin

doi:10.1255/ejms.148

Cited by 14 publications

(7 citation statements)

References 14 publications

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“…However, other studies show that charge exchange is the dominant process observed using isobutane with some compounds such as polychlorinated biphenyls. 30 Fales et al showed strong differences between the mass spectra resulting from ionization of sulfur S 8 with methane, isobutane, ammonia and water. 31 Methane produces an abundant MH + ion and numerous fragment ions derived from the (M + C 2 H 5 ) + adduct ion.…”

Section: Usual Reagents: Methane Isobutane and Ammoniamentioning

confidence: 99%

Low-Pressure Chemical Ionization in Ion Trap Mass Spectrometry

Bouchonnet

Libong

Sablier

2004

Eur J Mass Spectrom (Chichester)

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This article presents the specificities of low pressure chemical ionization in ion trap mass spectrometry. One main feature is the ability to perform chemical ionization with liquid reagents as readily as with "conventional" gases (methane, isobutane and ammonia). The reactivities and analytical applications of gas and liquid reagents are summarized from literature data and are compared when possible.

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Section: Usual Reagents: Methane Isobutane and Ammoniamentioning

confidence: 99%

Low-Pressure Chemical Ionization in Ion Trap Mass Spectrometry

Bouchonnet

Libong

Sablier

2004

Eur J Mass Spectrom (Chichester)

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“…69 Congener 77, which is highly toxic, is a non-ortho compound in that the molecule is not chlorine-substituted in the ortho positions vicinal to the phenyl-phenyl bond. On the other hand, congener 110 is a mono-ortho compound and is much less toxic.…”

Section: Gc/ci-ms/msmentioning

confidence: 99%

Quadrupole ion trap mass spectrometry: theory, simulation, recent developments and applications

March

1998

Rapid Commun. Mass Spectrom.

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This paper is a presentation of recent key developments in quadrupole ion trap mass spectrometry. These key developments have been made in three areas; namely, the trapping of ions generated externally to the ion trap, the fine control of the trajectories of ions confined within the ion trap, and the ejection of ions from the ion trap. Applications of quadrupole ion trap mass spectrometry that are illustrative of these developments are discussed. The origin of the quadrupole ion trap and its mode of current usage are discussed briefly. # 1998 John Wiley & Sons, Ltd. Received 20 June 1998; Revised 7 August 1998; Accepted 9 August 1998 The original commercial usage of a quadrupole ion trap was limited to the formation of ions in situ by electron impact ionization, focusing of the nascent ions to a cloud at the centre of the ion trap, and mass-selective axial ejection of ions to form a mass spectrum. The sheer simplicity of the mass-selective axial ejection technique permitted the commercialization of the quadrupole ion trap as a massselective detector for compounds separated by gas chromatography. In the past 15 years, the field of quadrupole ion trap mass spectrometry has developed appreciably; while it is not possible to consider all developments, attention can be focused on the key developments that extend or enhance ion trap performance markedly. The key instrumental developments cover three main areas: (a) the injection and storage of ions generated externally to the ion trap; (b) the fine control of the trajectories of ions confined within the ion trap; (c) the ejection of ions from the ion trap.

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“…Despite the fact that PCBs have been routinely analyzed by mass spectrometric techniques, including quadrupole ion trap analyzers, systematic studies focused on the PCB mass spectral fragmentation are very limited. The earliest overview on PCB fragmentation in a quadrupole ion trap mass spectrometer is reported in the pioneering works of March and coworkers …”

Section: Introductionmentioning

confidence: 99%

Extensive study on physicochemical properties of polychlorinated biphenyls in a commercial ion trap mass spectrometer, relevance in analytical and environmental chemistry

et al. 2017

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Polychlorinated biphenyls (PCBs) exist as 209 congeners, consisting of biphenyl molecules, where the number and substitution positions of halogen atoms are known to affect industrial uses, environmental transport mechanisms, distribution, fate, and toxicity. The complexity of the problem requires accurate physicochemical studies of an increasing number of congeners in order to understand the environmental and biological processes at play. This work presents a systematic study on the thermodynamic and kinetic properties of PCBs by quadrupole ion trap mass spectrometry. A clear relationship between structure and behavior of PCBs in mass spectrometry experiments has been observed. Overall data demonstrate that di-ortho congeners show lower thermodynamic stability and higher fragmentation rate than non/mono-ortho. Congeners follow different fragmentation mechanisms according to the number of chlorine atoms in ortho position of the biphenyl system. Experimental kinetic curves of mono/non-ortho and di-ortho congeners show a strong similarity with classical first-order kinetics curves; in particular, di-ortho congeners follow a first-order consecutive reaction, while mono/non-ortho follow a first-order parallel reaction. For each studied congener, the kinetic constant of reaction (fragmentation) has been determined. Data support environmental levels and biochemical transformations described in literature. The general picture of the PCB behavior inside a quadrupole ion trap provides the basis for the development of reliable and cost-effective analytical methods to the determination of ultra-low level trace of PCB congeners.

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Analysis of polychlorinated biphenyls by quadrupole ion trap mass spectrometry: Part I - Chemical ionization studies of co-eluting congeners 77 and 110

Cited by 14 publications

References 14 publications

Low-Pressure Chemical Ionization in Ion Trap Mass Spectrometry

Low-Pressure Chemical Ionization in Ion Trap Mass Spectrometry

Quadrupole ion trap mass spectrometry: theory, simulation, recent developments and applications

Extensive study on physicochemical properties of polychlorinated biphenyls in a commercial ion trap mass spectrometer, relevance in analytical and environmental chemistry

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