Zobrazeno 1 - 10
of 30
pro vyhledávání: '"Christopher M. Barshick"'
Publikováno v:
Applied Spectroscopy. 53:65-73
Tetrafluoromethane (CF4, 1.01% by weight) was added to the argon support gas of a hollow cathode glow discharge to investigate the analytical utility of etch atomization. When a conducting copper cathode was analyzed, the sputtering rate (as measured
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::57e04ddabf75cb35abfa493e435a4558
https://doi.org/10.1366/0003702991945236
https://doi.org/10.1366/0003702991945236
Publikováno v:
Analytical Chemistry. 71:483-488
Isotope dilution has been applied to an approach recently developed to quantify inorganic mercury compounds by ion trap gas chromatography/mass spectrometry (GC/MS). In this approach, a chemical al...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f40afacff695c1a4fc928c2121c48d6d
https://doi.org/10.1021/ac980854q
https://doi.org/10.1021/ac980854q
Publikováno v:
Analytical Chemistry. 70:709A-717A
Ion traps represent a radical change in thinking and a unique opportunity for the elemental mass spectrometrist to utilize these unique capabilities.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::575653f917b94b73137b247e6a2535a4
https://doi.org/10.1021/ac9820263
https://doi.org/10.1021/ac9820263
Autor:
Elisabeth B Walsh, Stacy-Ann Barshick, Michael A. Vance, Phillip F. Britt, Christopher M. Barshick, Derek A Lake
Publikováno v:
International Journal of Mass Spectrometry. 178:31-41
A technique has been developed to analyze environmentally relevant samples for organic and inorganic mercury compounds. A solid phase microextraction (SPME) fiber was used as a sampling medium in both water and water/soil slurries. Quantification of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f9a0e522719ee964fc2cd31656c55d75
https://doi.org/10.1016/s1387-3806(98)14091-5
https://doi.org/10.1016/s1387-3806(98)14091-5
Publikováno v:
International Journal of Mass Spectrometry. 178:73-79
The combination of a glow discharge ionization source with a Fourier transform ion cyclotron resonance (FTICR) mass spectrometer provides several advantages for elemental analysis; among these is an isotope ratio measured at the highest possible mass
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4bb8d5f18d0e9251d5e0383ba76317a3
https://doi.org/10.1016/s1387-3806(98)14087-3
https://doi.org/10.1016/s1387-3806(98)14087-3
Publikováno v:
Microchemical Journal. 55:208-221
This paper reports on novel efforts to prepare standard materials for glow discharge mass spectrometric (GDMS) applications by electrolytically depositing trace quantities of transition metal ions onto the surface of a compressed silver electrode. Th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4bd394c500b516df9ed2ca36bc64dcc5
https://doi.org/10.1006/mchj.1996.1415
https://doi.org/10.1006/mchj.1996.1415
Autor:
Christopher M. Barshick, Matthew L. Mohill, Phillip F. Britt, David H. Smith, Stacy-Ann Barshick
Publikováno v:
Rapid Communications in Mass Spectrometry. 10:341-346
Glow discharge mass spectrometry (GDMS) and gas chromatography/mass spectrometry (GC/MS) have been evaluated as techniques for total elemental assay in soil. GDMS analysis demonstrated accurate elemental quantification for lead and tin (approximately
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::32154c4d2aaf4e7538ff9e32b6438112
https://doi.org/10.1002/(sici)1097-0231(199602)10:3<341::aid-rcm475>3.0.co
https://doi.org/10.1002/(sici)1097-0231(199602)10:3<341::aid-rcm475>3.0.co
Publikováno v:
Rapid Communications in Mass Spectrometry. 10:316-320
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4896dce2e10e63a7bc9d61893771b768
https://doi.org/10.1002/(sici)1097-0231(199602)10:3<316::aid-rcm479>3.0.co
https://doi.org/10.1002/(sici)1097-0231(199602)10:3<316::aid-rcm479>3.0.co
Publikováno v:
Analytical Chemistry. 67:3814-3818
The measurement precision and accuracy were evaluated for an isotopic analysis of uranium using diode laser-excited optogalvanic spectroscopy. The ratio of 235 U/( 235 U + 238 U) was measured using the 776 nm uranium isotope line for five samples ran
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2c4a8592237b0231a40cb962652ca138
https://doi.org/10.1021/ac00116a033
https://doi.org/10.1021/ac00116a033
Autor:
Fred L. King, David H. Smith, Douglas C. Duckworth, Shelby J. Morton, Christopher M. Barshick, Jiuwei Teng
Publikováno v:
Applied Spectroscopy. 49:1361-1366
The influence of oxygen content, conducting host matrix, and soil composition on the quantitative determination of trace elements in soils by glow discharge mass spectrometry was examined. Oxygen content and conducting host matrix identity influenced
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f0b59533559436ff559910f2fd5b0ab9
https://doi.org/10.1366/0003702953965380
https://doi.org/10.1366/0003702953965380