@article {4619,
	title = {Ion/molecule reactions of perfluorotributylamine (FC43) cations with polycyclic aromatic hydrocarbons in a quadrupole ion trap},
	journal = {International Journal of Mass Spectrometry},
	volume = {191},
	year = {1999},
	note = {ISI Document Delivery No.: 229EETimes Cited: 1Cited Reference Count: 22},
	month = {Aug},
	pages = {195-207},
	type = {Article},
	abstract = {Ion/molecule reactions between fluorocarbon cations, generated from perfluorotributylamine (FC43), and polycyclic aromatic hydrocarbons (PAHs) were carried out in a quadrupole ion trap by mass isolating individual types of FC43 ions (R+) and reacting them with PAHs eluting from a GC column. The observed products resulting from these reactions consisted of [M + R](+) adducts and [M + R - nHF](+) (n = 1,2) elimination products. The relative abundance of these products was found to vary between different PAH structural isomers, such as anthracene and phenanthrene, thus enabling isomer differentiation. Of particular interest was the reactivity of the C3F5+ cation because this species yielded the most abundant and diverse reaction chemistry. Formation of adducts versus molecular ions appears to be strongly influenced by the ionization energy (IE) of the PAHs. Using this ion/molecule reaction technique several PAH isomers, present in a PAH contaminated environmental sediment extract, could be identified. (Int J Mass Spectrom 190/191 (1999) 195-207) (C) 1999 Elsevier Science B.V.},
	keywords = {ion/molecule reactions, isomer differentiation, perfluorotributylamine, polycyclic aromatic hydrocarbons, quadrupole ion trap},
	isbn = {1387-3806},
	url = {<Go to ISI>://000082179900020},
	author = {Mosi, A. A. and Cullen, W. R. and Eigendorf, G. K.}
}
@article {4357,
	title = {Ion-molecule reactions of halocarbon cations with polycyclic aromatic hydrocarbons in a quadrupole ion trap - Part II - Applications to environmental analysis},
	journal = {Journal of Mass Spectrometry},
	volume = {33},
	number = {3},
	year = {1998},
	note = {ISI Document Delivery No.: ZD564Times Cited: 5Cited Reference Count: 8},
	month = {Mar},
	pages = {250-263},
	type = {Article},
	abstract = {Ion-molecule reactions between the cations CH3CHF+ and CH3CF2+ generated from 1,1-difluoroethane and gas chromatographic eluents from a sediment extract containing polycyclic aromatic hydrocarbons (PAHs) were used to differentiate goups of PAH structural isomers, Formation of specific adducts led to characteristic mass spectra for the different isomers. Differences in the ion chromatograms for M+, MH+, [M+CH3CHF](+), [M +CH3CHF-HF](+), [M+CH(3)CF2](+) and [M+CH3CF2-HF](+) (M=PAH molecule) allowed the resolution of co-eluting isomers. As the ratio of yields of adducts was not changed by methyl substitution, it was possible to differentiate and quantitate alkylated PAHs for which standards were not available, By performing a series of transformations between the ion chromatograms of the most characteristic;adducts, information on individual isomer groups could he deconvoluted from complex clusters of isomers. This ion trap/chemical ionization technique displayed calibration curse parameters similar to those for electron ionization analysis and limits of detection of 170 pg in the sediment extract. (C) 1998 John Wiley \& Sons, Ltd.},
	keywords = {environmental analysis, halocarbon cations, ion-molecule, isomer differentiation, MARINE-SEDIMENTS, polycyclic aromatic hydrocarbons, REACTIONS},
	isbn = {1076-5174},
	url = {<Go to ISI>://000072699200006},
	author = {Mosi, A. A. and Cullen, W. R. and Eigendorf, G. K.}
}
@article {4076,
	title = {Ion-molecule reactions of halocarbon cations with polycyclic aromatic hydrocarbons in a quadrupole ion trap .1. Differentiation of structural isomers},
	journal = {Journal of Mass Spectrometry},
	volume = {32},
	number = {8},
	year = {1997},
	note = {ISI Document Delivery No.: XQ564Times Cited: 9Cited Reference Count: 26},
	month = {Aug},
	pages = {864-874},
	type = {Article},
	abstract = {Ion-molecule reactions between polycyclic aromatic hydrocarbons (PAHs) and ions (R+) generated from halogenated hydrocarbons (dichloromethane, chloroform, carbon tetrachloride, 1,1-dichloroethane, difluoromethane and 1,1-difluoroethane) in a quadrupole ion trap were used to differentiate a series of structural isomers of PAHs. This differentiation was based on the formation of [M + R](+) and [M + R - HX](+) products (X = Cl, F) between the halocarbon ions (R+) and PAH molecules (M). Halomethanes were found to give rise predominantly to the elimination products [M + R - HX](+), while the haloethanes also yielded significant amounts of the [M + R](+) adducts. Differences in the ionization energies of the PAH isomers seem to be partially responsible for this differentiation process, Collision-induced dissociation experiments also revealed structural differences in the adducts of different PAH isomers. (C) 1997 by John Wiley \& Sons, Ltd.},
	keywords = {DIMETHYL ETHER, ETHER CHEMICAL-IONIZATION, GAS-PHASE, halocarbon ions, ion-molecule, IONIZATION MASS-SPECTROMETRY, isomer differentiation, polycycle aromatic hydrocarbons, quadrupole ion trap, REACTIONS},
	isbn = {1076-5174},
	url = {<Go to ISI>://A1997XQ56400009},
	author = {Mosi, A. A. and Cullen, W. R. and Eigendorf, G. K.}
}
