glaucium flavum/silika kemia

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NakalaMajaribio ya klinikiHati miliki

Chagua aina ya aina

3 matokeo

TLC of alkaloids on cyanopropyl bonded stationary phases. Part II. Connection with RP18 and silica plates.

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Ingia / Ingia

Some standards of the alkaloids and synthetic or natural mixtures are separated by two-dimensional thin-layer chromatography (TLC) on different adsorbent layers. Normal- and reversed-phase systems are used to obtain significant differences in the separation selectivity. Optimization of the

Thin-layer chromatography of alkaloids on cyanopropyl bonded stationary phases. Part I.

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Ingia / Ingia

Selected alkaloids are chromatographed on cyanopropyl-silica thin layers using various nonaqueous and aqueous eluents. Because of the strong retention of these basic compounds, nonaqueous eluents containing medium polar diluents, strongly polar modifiers, and silanol blockers (ammonia or

Effect of chromatographic conditions on the separation and system efficiency for HPLC of selected alkaloids on different stationary phases.

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Ingia / Ingia

Retention parameters of alkaloid standards were determined on different stationary phases, i.e., octadecyl silica, base-deactivated octadecyl silica, cyanopropyl silica, preconditioned cyanopropyl silica, and pentafluorophenyl, using different aqueous eluant systems: acetonitrile-water mixtures;

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Herbal & Natural Medicine

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