Zobrazeno 1 - 10
of 38
pro vyhledávání: '"W. L. Fite"'
Benzene charge exchange at atmospheric pressure for low-level detection of pollutants in ambient air
Publikováno v:
Analytica Chimica Acta. 245:267-270
Charge exchange using the benzene molecular ion in a corona discharge atmospheric pressure ionization source is shown to be extremely sensitive for detecting low proton affinity compounds in air. Experiments performed on an Extrel API tandem mass spe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::00e143401d4e51c52e2a16ac3118dfee
https://doi.org/10.1016/s0003-2670(00)80231-7
https://doi.org/10.1016/s0003-2670(00)80231-7
Publikováno v:
Analytical Chemistry. 63:457-459
An atmospheric pressure ionization tandem quadrupole mass spectrometer system was used to detect, in real time, low levels of chemical warfare agents GB and VX in air. The system exhibits detection limits of 7.2 ppt (parts per trillion) for GB and 6
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9ba2aa5d73b0c13f79c5643cdb563793
https://doi.org/10.1021/ac00005a014
https://doi.org/10.1021/ac00005a014
Publikováno v:
Analytical Chemistry. 63:924-925
A simple rate equation analysis was used to model the ion-molecule chemistry occurring in the ionization source. The experimental results obtained for the detection of dimethyl methyl phosphonate, in the presence of varying concentrations of diisopro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c0f32ea5af522a24998395840769221f
https://doi.org/10.1021/ac00009a018
https://doi.org/10.1021/ac00009a018
Autor:
W. L. Fite, M. W. Siegel
Publikováno v:
The Journal of Physical Chemistry. 80:2871-2881
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::79572c5586dd9c8d5af2d4813dbe0737
https://doi.org/10.1021/j100567a013
https://doi.org/10.1021/j100567a013
Publikováno v:
Physical Review A. 10:1167-1176
The cross sections for Lyman-$\ensuremath{\alpha}$ production by the processes ${\mathrm{H}}^{+} (or {\mathrm{D}}^{+})+\mathrm{H}(1S)\ensuremath{\rightarrow}{\mathrm{H}}^{+} (or {\mathrm{D}}^{+})+\mathrm{H}(2P)$ (direct excitation) and ${\mathrm{H}}^
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e3bdb876db6f65aac193d30a85ff81dc
https://doi.org/10.1103/physreva.10.1167
https://doi.org/10.1103/physreva.10.1167
Publikováno v:
International Journal of Mass Spectrometry and Ion Physics. 13:237-250
The elecltron impact ionization of CO 2 as a function of temperature of the CO 2 up to 1500 K has been studied using modulated beam mass spectrometry. It is found that in this temperature range the cross section for forming the primary ion CO 2 + is
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a7946df1274496b6ee596cb44b01fc40
https://doi.org/10.1016/0020-7381(74)80028-8
https://doi.org/10.1016/0020-7381(74)80028-8
Publikováno v:
Analytical Chemistry. 61:260-264
An atmospheric pressure ionization tandem mass spectrometric (API) (MS/MS) system is described that is capable of detecting, in real time, very low levels of contaminant ( 90/degrees/C), high humidity (>90% RH), and the presence of 3% CO/sub 2/ and >
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f6f4eefb0dd518209f6e1eb46f205319
https://doi.org/10.1021/ac00178a014
https://doi.org/10.1021/ac00178a014
Publikováno v:
The Journal of Chemical Physics. 60:1236-1250
Collisions between thermal energy uranium atoms and oxygen atoms and molecules have been studied in four experiments. A triple crossed beam experiment has determined that the ratio of effective cross sections for the associative ionization processes
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5dadaedb898575a78dd9522ce0c8f472
https://doi.org/10.1063/1.1681188
https://doi.org/10.1063/1.1681188
Publikováno v:
Physical Review A. 23:1708-1716
The cross sections for single and multiple ionization of uranium by electron impact for energies 7.5 to 500 eV have been measured using a modulated crossed-beam experiment. The absolute total ionization cross section was found by comparing the cross
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::116513f04ecdbc1766591001fbd60856
https://doi.org/10.1103/physreva.23.1708
https://doi.org/10.1103/physreva.23.1708
Publikováno v:
Journal of Geophysical Research. 68:3225-3229
Two laboratory experiments were performed to study the products of collisions between He⁺ and O₂. In the first, mass spectrometry of afterglows in mixtures of helium and oxygen indicated that the product of the collisions at thermal energies was
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a265e9cc5221d26eb3648a7a5b11a267
https://doi.org/10.1029/jz068i010p03225
https://doi.org/10.1029/jz068i010p03225