Zobrazeno 1 - 9 of 9 pro vyhledávání: '"J Andreas, Lippert"'
5
Effects of elevated temperature and mobile phase composition on a novel C18 silica column
Autor: Bryce T. Johnson, Jarem B. Lloyd, Angela Proctor, Stephanie J. Marin, Todd M. Johnson, Jared P. Smith, Jason Furlow, J. Andreas Lippert
Publikováno v: Journal of Separation Science. 30:1141-1149
A novel polydentate C18 silica column was evaluated at an elevated temperature under acidic, basic, and neutral mobile phase conditions using ACN and methanol as the mobile phase organic modifier. The temperature range was 40-200 degrees C. The mobil
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b08da2187f60e4098a7b225e65e0782b
https://doi.org/10.1002/jssc.200600525
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6
Packed capillary column solvating gas chromatography using neat water mobile phase and flame ionization detection
Autor: Naijun Wu, Milton L. Lee, Qinglin Tang, J. Andreas Lippert
Publikováno v: Journal of Microcolumn Separations. 13:41-47
Neat water at temperatures above its normal boiling point was used as a mobile phase for packed capillary column chromatography. The “universal” flame ionization detector (FID) was used for detection. No restrictor or back pressure was imposed at
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::31107659ed6a481253a037c51fdc4d7f
https://doi.org/10.1002/mcs.1019
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7
Ultrahigh pressure liquid chromatography/time-of-flight mass spectrometry for fast separations
Autor: Milton L. Lee, David C. Collins, Naijun Wu, Yanqiao Xiang, J. Andreas Lippert
Publikováno v: Scopus-Elsevier
Recently, ultrahigh pressure liquid chromatography (UHPLC) has been shown to overcome the pressure limitations that small particles impose on conventional pumping systems. High speed separations in UHPLC produce peak widths that range between 100 to
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8e0c921e396b4d27f9233d316bffaa43
https://doi.org/10.1002/1520-667x(2000)12:8<462::aid-mcs5>3.0.co
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8
Fast ultrahigh-pressure liquid chromatography: On-column UV and time-of-flight mass spectrometric detection
Autor: Naijun Wu, Milton L. Lee, Baomin Xin, J. Andreas Lippert
Publikováno v: Journal of Microcolumn Separations. 11:631-643
An ultrahigh-pressure liquid chromatography (UHPLC) system capable of generating 52,000 psi (3,600 bar) was constructed. Fused-silica capillaries with inner diameters of 29 μm and lengths up to 70 cm were packed with nonporous 1.5-μm isohexylsilane
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c0126d2c1a28cf205f05391e5a21c6da
https://doi.org/10.1002/(sici)1520-667x(199911)11:9<631::aid-mcs1>3.0.co
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9
Practical aspects of ultrahigh pressure capillary liquid chromatography
Autor: Naijun Wu, J. Andreas Lippert, Milton L. Lee
Publikováno v: Journal of chromatography. A. 911(1)
A novel pressure-balanced injection valve was evaluated for use with ultrahigh pressure liquid chromatography (UHPLC) at pressures up to 120 MPa (1,200 bar). Fused-silica capillaries (30-33 cm x 100 microm I.D.) packed with nonporous 1.5 microm isohe
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e2348334924bf3a471a5cddec2d05aaf
https://pubmed.ncbi.nlm.nih.gov/11269586
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