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Showing 1 to 9 of 9 for “"Solute retention"”.
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Studies of solute retention in HPLC using hydrophobic pairing ions with octadecylsilica.
… are made of current theories proposed for the retention mechanisms in such chromatography. In the light of the inadequacies shown by previous theories, experimental work is reported on the adsorption of several widely used anionic and cationic pairing ions on ODS-Hypersil as a typical capped …
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Complementary Effects of In-Stream Structures and Inset Floodplains on Solute Retention
… stream restoration to improve water quality. �Solute retention in off channel storage zones such as hyporheic zones and floodplains is typically necessary for significant reaction to occur. �Yet the effects of two common restoration techniques, in stream structures and inset floodplains, on …
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Identification and Quantitation of Cannabinoid Solute-Column Interactions Using the Hydrophobic-Subtraction Model to Predict Separation in High-Performance Liquid Chromatography
… describes the parameters affecting solute retention on HPLC columns including hydrophobic, steric, hydrogen-bond, cation exchange, and dipole interactions. To demonstrate the process, 16 cannabinoid compounds were chosen as the test solutes due to increasing interest and …
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Spectroscopic Study of Compressible Mobile Phase and Stationary Phase Behavior in Chromatography
… leads to gradients in linear velocity and solute retention and affects separation speed and efficiency, especially in packed columns. This work describes on-column density measurement of CO2, a common carrier fluid for SFC and SGC, in packed capillary columns using Raman microspectroscopy. …
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Vegetative Potential to Reduce Total Dissolved Solid Nutrient Ions Generated from Reclaimed Mine Lands in Central Appalachia
… may reduce TDS nutrient ion loading, through solute retention mechanisms driven by organic matter inputs and plant uptake.
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Floodplain Hydrology and Biogeochemistry
… can reduce the downstream flux of reactive solutes such as nitrogen (N) and phosphorus (P) and thus improve downstream water quality. However, there is little scientific literature to guide ecological engineering efforts which optimize river-floodplain connectivity for solute retention. …
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Solute transport in layered and heterogeneous soils
… media are necessary. In this study, transport of solutes in layered and heterogeneous media was investigated using numerical approximations. For layered soils, transport properties were assumed homogeneous within individual layers but different between layers. For heterogeneous systems, either a …
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Mechanisms governing phosphorus retention in streams
… bacteria, and fungi) growth. As a result, retention of phosphorus within streams largely determines productivity. Factors that influence retention include temperature (Elwood et al. 1981b), velocity (Bencala 1983), and organic matter (Mulholland et al. 1984). Watershed input-output budgets …
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Elucidation Of Chiral Recognition Mechanisms Of Solutes By Amylose Tris[(s)-Alpha-Methylbenzylcarbamate] Sorbent
… have been obtained. The behavior of sorbent-solute-hexane systems can be interpreted by considering only sorbent solute two-component interactions. Infrared (IR) spectra showed evidence of substantial hydrogen bonding (H-bonding) interactions in the pure polymer phase, and additional …