Isomeric identification and quantification of polycyclic aromatic hydrocarbons in environmental samples by liquid chromatography tandem mass spectrometry using a high pressure quadrupole collision cell

Mansoori, Bashir A.

doi:10.1002/(sici)1097-0231(19980615)12:11<712::aid-rcm215>3.0.co;2-2

Cited by 20 publications

(22 citation statements)

References 27 publications

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“…The aim of this study was quantitative evaluation of amine-one and/or imine-ol isomers in solution state. Generally, the isomers if present are separated out by LC [32] with different retention times. However, in present LC, only a single band is observed with retention time of 0.161-0.172 min, which may be assigned to imine-ol form (Fig.…”

Section: Lc-msmentioning

confidence: 99%

Synthesis, spectral, thermal and crystallographic investigations on oxovanadium(IV) and manganese(III) complexes derived from heterocyclic β-diketone and 2-amino ethanol

et al. 2007

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Novel mononuclear oxovanadium(IV) and manganese(III) complexes [VO(L 1 ) 2 ·H 2 O] (1); [VO(L 2 ) 2 ·H 2 O] (2); [VO(L 3 ) 2 ·H 2 O] (3); [Mn(L 1 ) 2 ]ClO 4 ·H 2 O (4); [Mn(L 2 ) 2 ] ClO 4 ·H 2 O (5); [Mn(L 3 ) 2 ]ClO 4 ·H 2 O (6) were prepared by condensation of 1 mol of VOSO 4 ·5H 2 O or Mn(OAc) 3 · 2H 2 O with 2 mol of ligand HL 1 , HL 2 or HL 3 (where HL 1-5-methyl-2-p-tolyl-2,4-dihydro-pyrazol-3-one; HL 3 = 4-{4-[(2-hydroxy-ethyl-amino)-methyl]-3-methyl-5-oxo-4,5-dihydropyrazol-1-yl} benzene sulfonic acid). The resulting complexes were characterized by elemental analyses, molar conductance, magnetic and decomposition temperature measurements, electron spin resonance, FAB mass, IR and electronic spectral studies. From TGA, DTA and DSC, the thermal behaviour and degradation kinetic were studied. Electronic spectra and magnetic susceptibility measurements indicate distorted octahedral stereochemistry of oxovanadium(IV) complexes and regular octahedral stereochemistry of manganese(III) complexes. Hamiltonian and bonding parameters found from ESR spectra indicate the metal ligand bonding is partial covalent. The X-ray single

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Section: Lc-msmentioning

confidence: 99%

Synthesis, spectral, thermal and crystallographic investigations on oxovanadium(IV) and manganese(III) complexes derived from heterocyclic β-diketone and 2-amino ethanol

et al. 2007

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“…This result is in accordance with previous findings reporting that the protonated ion is often dominant for larger PAHs (Anacleto et al, 1995;Mansoori, 1998;Marvin et al, 1999). In addition, one can also notice that larger PAHs show a higher relative molar intensity, and are thus ionized more efficiently.…”

Section: Total Ionization Efficiencies Of Major Compound Classessupporting

confidence: 93%

Going Beyond the Analysis of Common Contaminants: Target, Suspect, and Non-Target Analysis of Complex Environmental Matrices by High-Resolution Mass Spectrometry

Huba¹

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“…Several papers have been published on the analysis of PAHs using HPLC combined with APCI-MS [12,19,20] using Sciex API-III triple quadrupole mass spectrometers fitted with heated nebulizer APCI interfaces. It was found that PAHs with higher molecular masses showed predominantly proton transfer especially when the eluent stream, if nonaqueous, was doped with a low concentration of water.…”

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confidence: 99%

“…These authors also used highpurity air as the nebulizing gas, with nitrogen as the desolvating curtain gas. It should be noted that, in contrast to CI mass spectrometry in which a wide range of gases and gas combinations have been studied [2], spectra using APCI have been acquired only with nitrogen or air in the gas streams [13,19].…”

mentioning

confidence: 99%

Studies on the positive-ion mass spectra from atmospheric pressure chemical ionization of gases and solvents used in liquid chromatography and direct liquid injection

Kolakowski

Grossert

Ramaley

2004

J. Am. Soc. Mass Spectrom.

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Detailed studies have been made using different source gases and solvents in a Micromass Quattro mass spectrometer under positive ion atmospheric pressure chemical ionization conditions. The major background ions from nitrogen, air, or carbon dioxide were investigated by tandem mass spectrometry, followed by similar studies on solvents commonly employed in normal- and reversed-phase high-performance liquid chromatography, namely, water-acetonitrile, acetonitrile, and dichloromethane, with nitrogen, air, or carbon dioxide; hydrocarbon solvents were studied using nitrogen. Spectra were interpreted in terms of the gases, solvents, and their impurities. The acetonitrile spectra provided clear evidence for both charge exchange and proton transfer, the former being facilitated by the introduction of some air into a flow of nitrogen. Radical cations of acetonitrile dimers, trimers, and tetramers were observed, as were protonated dimer and trimer species. Examination of the analytical response of four polycyclic aromatic hydrocarbons in various hydrocarbon solvents, with nitrogen gas, showed that the sensitivity of detection for an analyte and its ionization mechanism are dependent on both the analyte structure and the solvent, with pyrene showing the highest sensitivity, phenanthrene and fluorene being intermediate, and naphthalene having the lowest sensitivity. The degree of protonation followed the same trend. Signal intensity and degree of protonation were dependent on the alkane solvent used, with isooctane providing the best overall sensitivity for the sum of protonated molecules and molecular ions. The ions observed in these studies appeared to be the most stable ions formed under equilibrium conditions in the source.

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Isomeric identification and quantification of polycyclic aromatic hydrocarbons in environmental samples by liquid chromatography tandem mass spectrometry using a high pressure quadrupole collision cell

Cited by 20 publications

References 27 publications

Synthesis, spectral, thermal and crystallographic investigations on oxovanadium(IV) and manganese(III) complexes derived from heterocyclic β-diketone and 2-amino ethanol

Synthesis, spectral, thermal and crystallographic investigations on oxovanadium(IV) and manganese(III) complexes derived from heterocyclic β-diketone and 2-amino ethanol

Going Beyond the Analysis of Common Contaminants: Target, Suspect, and Non-Target Analysis of Complex Environmental Matrices by High-Resolution Mass Spectrometry

Studies on the positive-ion mass spectra from atmospheric pressure chemical ionization of gases and solvents used in liquid chromatography and direct liquid injection

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