Výsledky vyhledávání

Combined use of temperature and solvent strength in reversed-phase gradient elution I. Predicting separation as a function of temperature and gradient conditions

Autor: T.J. Waeghe, Lloyd R. Snyder, N.M. Djordjevic, Lane C. Sander, John W. Dolan, P.L. Zhu, D.W. Hill

Publikováno v: Journal of Chromatography A. 756:21-39

It has been shown previously that computer simulation based on two initial experiments can predict separation in reversed-phase gradient elution as a function of gradient conditions (gradient steepness, gradient range and gradient shape) and column c

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c36ef8bb0e9efb9dae5051719dd302d5
https://doi.org/10.1016/s0021-9673(96)00721-2

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Combined use of temperature and solvent strength in reversed-phase gradient elution III. Selectivity for ionizable samples as a function of sample type and pH

Autor: T.J. Waeghe, D.W. Hill, P.L. Zhu, J.W. Dolan, L. Van Heukelem, L.R. Snyder

Publikováno v: Journal of Chromatography A. 756:51-62

The ability of temperature and gradient steepness to change band spacing has been investigated for several ionizable samples that include 8 substituted benzoic acids, 9 substituted anilines, 22 basic drugs, 9 structurally-related herbicide impurities

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::dd0dd2c523abddb3b081ef268f0c738e
https://doi.org/10.1016/s0021-9673(96)00723-6

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Combined use of temperature and solvent strength in reversed-phase gradient elution II. Comparing selectivity for different samples and systems

Autor: P.L. Zhu, L.R. Snyder, J.W. Dolan

Publikováno v: Journal of Chromatography A. 756:41-50

A change in temperature (T) or gradient steepness (b) can result in changes in reversed-phase selectivity (α). The magnitude of these changes in α will vary with other separation conditions (column, pH, etc.) and with sample type. In this paper, se

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3708d03fa35609b66be50a86e5521076
https://doi.org/10.1016/s0021-9673(96)00722-4

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Combined use of temperature and solvent strength in reversed-phase gradient elution IV. Selectivity for neutral (non-ionized) samples as a function of sample type and other separation conditions

Autor: L. Van Heukelem, Lane C. Sander, John W. Dolan, Jiann-Tsyh Lin, P.L. Zhu, D.W. Hill, Lloyd R. Snyder, N.M. Djordjevic

Publikováno v: Journal of Chromatography A. 756:63-72

The separation of nine un-ionized samples was studied as a function of temperature (T) and gradient steepness (b). Selectivity values Δlog α∗ were obtained for 160 compounds, ranging from nonpolar hydrocarbons to very polar drugs. Selectivity var

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9a38a3b584b0ead7b50310d905bdfffc
https://doi.org/10.1016/s0021-9673(96)00724-8

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Improved baselines in gradient elution

Autor: L.R. Snyder, P.L. Zhu, J.W. Dolan

Publikováno v: Journal of Chromatography A. 718:429-435

A technique is described to provide on-line cleanup of water-rich solvents used in HPLC gradients generated via high-pressure mixing. A short precolumn is placed between the solvent pump A and the mobile-phase mixer to remove contaminants. A six-port

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::486d4b5b368eed3d957610eadabb87de
https://doi.org/10.1016/0021-9673(95)00683-4

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Comprehensive effects of exogenous salicylic acid and light on chlorophyll fluorescence parameters and photosynthetic oxygen evolution in Ulva prolifera

Autor: P.L. ZHUO, Y.H. LI, J.L. ZHONG, M.S. ZHENG, W.R. ZHU, N.J. XU

Publikováno v: Photosynthetica, Vol 57, Iss 1, Pp 342-349 (2019)

Ulva prolifera is one of the causative species of green tides. Salicylic acid (SA) alleviated the high-temperature damage by up-regulating a portion of antioxidant-related proteins, however, little is understood regarding the impacts of SA under high

Externí odkaz: https://doaj.org/article/8d2dd15e17964576a78b8c350edd4ab4

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Akademický článek

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