Zobrazeno 1 - 10
of 46
pro vyhledávání: '"P. H. HEMBERGER"'
Publikováno v:
International Journal of Mass Spectrometry. 212:197-204
We present results for the simultaneous detection of volatile organic compounds, semivolatile organic compounds, and organometallic compounds in air and water by using membrane introduction ion trap mass spectrometry. In these experiments, a membrane
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f4b3e1ef3691122b83c716318ffe4f81
https://doi.org/10.1016/s1387-3806(01)00487-0
https://doi.org/10.1016/s1387-3806(01)00487-0
Publikováno v:
Mass Spectrometry Reviews. 19:1-37
Recent advances in membrane introduction mass spectrometry (MIMS) are reviewed. On-line monitoring is treated by focusing on critical variables, including the nature and dimensions of the membrane, and the analyte vapor pressure, diffusivity, and sol
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::482a801e5cfdbd4021f76f8ec1cb0243
https://doi.org/10.1002/(sici)1098-2787(2000)19:1<1::aid-mas1>3.0.co
https://doi.org/10.1002/(sici)1098-2787(2000)19:1<1::aid-mas1>3.0.co
Publikováno v:
International Journal of Mass Spectrometry. 178:121-128
The on-line detection of both positive and negative ions has been demonstrated using a microwave plasma ionization source coupled with an ion trap mass spectrometer. Real-time xenon and krypton isotope measurements in air were made using either suppl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1d8c4135a4b8ca7150a6a267e088a986
https://doi.org/10.1016/s1387-3806(98)14085-x
https://doi.org/10.1016/s1387-3806(98)14085-x
Autor:
P. H. Hemberger, M. E. Cisper
Publikováno v:
Rapid Communications in Mass Spectrometry. 11:1449-1453
We present results for direct on-line detection of semi-volatile compounds in air using membrane introduction ion trap mass spectrometry. Brief sampling periods of 10 seconds to 3 minutes produced linear and reproducible data for concentrations rangi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::02de6b4d988589d288ac41a0d918b89b
https://doi.org/10.1002/(sici)1097-0231(19970830)11:13<1449::aid-rcm26>3.0.co
https://doi.org/10.1002/(sici)1097-0231(19970830)11:13<1449::aid-rcm26>3.0.co
Publikováno v:
Rapid Communications in Mass Spectrometry. 11:551-556
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::92e6a1599ddd28a4bd8a4799504aab60
https://doi.org/10.1002/(sici)1097-0231(199704)11:6<551::aid-rcm914>3.0.co
https://doi.org/10.1002/(sici)1097-0231(199704)11:6<551::aid-rcm914>3.0.co
Publikováno v:
Journal of the American Society for Mass Spectrometry. 7:1172-1176
A dual adsorbent trap inlet system has been developed for an ion trap mass spectrometer (ITMS) to provide a rapid and sensitive system for screening of volatile organic compounds in air. The system employs three stages of concentration: preconcentrat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9baacd90f3cae57b449b13d96214f6e9
https://doi.org/10.1016/s1044-0305(96)00138-9
https://doi.org/10.1016/s1044-0305(96)00138-9
Publikováno v:
Environmental Monitoring and Assessment. 43:189-200
We describe four sensing and characterization technologies recently developed at Los Alamos National Laboratory; a select set of mass spectral and optical techniques is emphasized. This work describes new, or newly developed, technologies which can b
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bce86509ced4c46ab8f780b8f1d2057c
https://doi.org/10.1007/bf00398607
https://doi.org/10.1007/bf00398607
Publikováno v:
Spectrochimica Acta Part B: Atomic Spectroscopy. 51:851-862
Laser ablation provides a clean, broadly applicable ionization source for ion trap mass spectrometry. However, the ion storage capacity of an ion trap mass spectrometer requires a degree of selectivity in either the ion generation or ion storage proc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4223f33a1a7560f0b56a024c7697e9fa
https://doi.org/10.1016/0584-8547(96)01467-x
https://doi.org/10.1016/0584-8547(96)01467-x
Publikováno v:
The Journal of Physical Chemistry. 100:5205-5209
Trapped ions of different masses can be separated in space within a quadrupole ion trap, making it possible to perform efficient mass-selective photodissociation on a mixture of ions. This method employs an axial quadrupolar dc pulse (1 μs) to force
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7c7b6070f3426350bf215f655b491ebc
https://doi.org/10.1021/jp952167y
https://doi.org/10.1021/jp952167y
Publikováno v:
Spectrochimica Acta Part B: Atomic Spectroscopy. 50:1889-1895
The ion storage capacity ( 6 ) of ion trap mass spectrometers (ITMS) can sometimes limit the ability to analyze trace components in complex mixtures. We demonstrate here that resonant laser ablation (RLA) can offer a degree of selectivity in the ioni
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cb6c7ca2ff362c6bcbeef77c68b9c9dd
https://doi.org/10.1016/0584-8547(95)01382-2
https://doi.org/10.1016/0584-8547(95)01382-2