Nothing Special   »   [go: up one dir, main page]

Du et al., 2009 - Google Patents

A comparative study of the separation of oleanolic acid and ursolic acid in Prunella vulgaris by high-performance liquid chromatography and cyclodextrin-modified …

Du et al., 2009

View PDF
Document ID
10071600944767342193
Author
Du H
Chen X
Publication year
Publication venue
Journal of the Iranian Chemical Society

External Links

Snippet

A high-performance liquid chromatographic (HPLC) method and a cyclodextrin-modified micellar electrokinetic chromatographic (CD-MEKC) method were developed to separate and determine oleanolic acid (OA) and ursolic acid (UA) in Prunella vulgaris. HPLC …
Continue reading at www.sid.ir (PDF) (other versions)

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N30/00Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
    • G01N30/02Column chromatography
    • G01N30/88Integrated analysis systems specially adapted therefor, not covered by a single one of the groups G01N30/04 - G01N30/86
    • G01N2030/8809Integrated analysis systems specially adapted therefor, not covered by a single one of the groups G01N30/04 - G01N30/86 analysis specially adapted for the sample
    • G01N2030/8813Integrated analysis systems specially adapted therefor, not covered by a single one of the groups G01N30/04 - G01N30/86 analysis specially adapted for the sample biological materials
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N30/00Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
    • G01N30/02Column chromatography
    • G01N30/26Conditioning of the fluid carrier; Flow patterns
    • G01N30/28Control of physical parameters of the fluid carrier
    • G01N30/34Control of physical parameters of the fluid carrier of fluid composition, e.g. gradient
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N30/00Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
    • G01N30/02Column chromatography
    • G01N30/04Preparation or injection of sample to be analysed
    • G01N30/06Preparation
    • G01N30/08Preparation using an enricher
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N30/00Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
    • G01N30/02Column chromatography
    • G01N30/26Conditioning of the fluid carrier; Flow patterns
    • G01N30/38Flow patterns
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N30/00Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
    • G01N30/02Column chromatography
    • G01N30/60Construction of the column
    • G01N30/6034Construction of the column joining multiple columns
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N30/00Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
    • G01N30/02Column chromatography
    • G01N30/60Construction of the column
    • G01N30/6004Construction of the column end pieces
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N30/00Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
    • G01N30/02Column chromatography
    • G01N30/62Detectors specially adapted therefor
    • G01N30/72Mass spectrometers
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N30/00Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
    • G01N30/02Column chromatography
    • G01N30/04Preparation or injection of sample to be analysed
    • G01N30/16Injection
    • G01N30/20Injection using a sampling valve
    • G01N2030/202Injection using a sampling valve rotary valves
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N30/00Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
    • G01N30/02Column chromatography
    • G01N30/84Preparation of the fraction to be distributed
    • G01N2030/8429Preparation of the fraction to be distributed adding modificating material
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N30/00Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
    • G01N30/90Plate chromatography, e.g. thin layer or paper chromatography
    • G01N30/94Development
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00Investigating or analysing materials by the use of electric, electro-chemical, or magnetic means
    • G01N27/26Investigating or analysing materials by the use of electric, electro-chemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
    • G01N27/416Systems
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D15/00Separating processes involving the treatment of liquids with solid sorbents; Apparatus therefor
    • B01D15/08Selective adsorption, e.g. chromatography
    • B01D15/26Selective adsorption, e.g. chromatography characterised by the separation mechanism
    • B01D15/30Partition chromatography
    • B01D15/305Hydrophilic interaction chromatography [HILIC]
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D15/00Separating processes involving the treatment of liquids with solid sorbents; Apparatus therefor
    • B01D15/08Selective adsorption, e.g. chromatography
    • B01D15/10Selective adsorption, e.g. chromatography characterised by constructional or operational features

Similar Documents

Publication Publication Date Title
West Current trends in supercritical fluid chromatography
Breadmore et al. Recent advances in enhancing the sensitivity of electrophoresis and electrochromatography in capillaries and microchips (2016–2018)
Sottofattori et al. Simultaneous HPLC determination of multiple components in a commercial cosmetic cream
Ma et al. Extraction of carbamate pesticides in fruit samples by graphene reinforced hollow fibre liquid microextraction followed by high performance liquid chromatographic detection
Bazregar et al. Tandem dispersive liquid–liquid microextraction as an efficient method for determination of basic drugs in complicated matrices
Zarabi et al. Dispersive micro-solid phase extraction in micro-channel
Li et al. Design and implementation of an automated liquid-phase microextraction-chip system coupled on-line with high performance liquid chromatography
Zhang et al. Sweeping with electrokinetic injection and analyte focusing by micelle collapse in two-dimensional separation via integration of micellar electrokinetic chromatography with capillary zone electrophoresis
Lucy et al. Advances in high-speed and high-resolution ion chromatography
Pang et al. A metal organic framework polymer monolithic column as a novel adsorbent for on-line solid phase extraction and determination of ursolic acid in Chinese herbal medicine
Du et al. A comparative study of the separation of oleanolic acid and ursolic acid in Prunella vulgaris by high-performance liquid chromatography and cyclodextrin-modified micellar electrokinetic chromatography
CN109709198B (en) Online enrichment method for capillary electrophoresis
Dolan Gradient elution, part IV: dwell-volume problems
Ma et al. Fast analysis of thiocyanate by ion-pair chromatography with direct conductivity detection on a monolithic column
Peng et al. Analysis of phenolic acids by ionic liquid-in-water microemulsion liquid chromatography coupled with ultraviolet and electrochemical detector
Ma et al. The in-capillary-2, 2-azinobis-(3-ethylbenzothiazoline-6-sulfonic acid)-sweeping micellar electrokinetic chromatography-Diode array detector method for screening and quantifying trace natural antioxidants from Schisandra chinensis
Wang et al. Determination of triclocarban, triclosan and methyl-triclosan in environmental water by silicon dioxide/polystyrene composite microspheres solid-phase extraction combined with HPLC-ESI-MS
Lian et al. Online preconcentration methodology that realizes over 2000-fold enhancement by integrating the free liquid membrane into electrokinetic supercharging in capillary electrophoresis for the determination of trace anionic analytes in complex samples
Lu et al. Pressurized CEC with amperometric detection using mixed‐mode monolithic column for rapid analysis of chlorophenols and phenol
Wei et al. Rapid determination of aristolochic acid I and II in medicinal plants with high sensitivity by cucurbit [7] uril-modifier capillary zone electrophoresis
Du et al. CD-MEKC method to analyze triterpene acids in traditional Chinese medicines
Breadmore Preconcentration and frontal electroelution of amino acids for in-line solid-phase extraction–capillary electrophoresis
Šafra et al. Determination of selected antioxidants in Melissae herba by isotachophoresis and capillary zone electrophoresis in the column-coupling configuration
Cao et al. On-line concentration of neutral analytes by complexation and acetonitrile sweeping in nonionic microemulsion electrokinetic chromatography with direct ultraviolet detection
Liu et al. Multivariable optimization of the micellar system for the ionic liquid-modified MEKC separation of phenolic acids