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Cutting through the confusion in high performance liquid chromatographic column technology
high performance liquid chromatography column packings silica particles
2011/3/21
Column packings continue to evolve as the needs of users for high efficiency, high resolution and highly sensitive high performance liquid chromatographic (HPLC) analysis drive further developments. I...
Basic Chromatographic Properties of Polyethylene Glycol-type, Polymer-based Monolithic Columns
Basic Chromatographic Properties Polyethylene Glycol-type Polymer-based Monolithic Columns
2010/9/17
We have prepared polyethylene glycol (PEG)-type, polymer-based monolithic columns (PEG-type columns) to study the basic properties of PEG-type monolithic polymers. Chromatographic characteristics of t...
Determination of Urea in Serum Based on the Combination of an Enzymatic Reaction with Immobilized Urease and Ion Chromatographic Analysis
Determination Serum Based Combination Immobilized Urease Ion Chromatographic Analysis
2010/9/15
A quantitative method for the determination of urea in serum was studied. An ion chromatograph (IC) with a conductivity detector was used in this method, where the chromatograph was modified by placin...
Extraction chromatographic separation of platinum(IV) from real samples and associated elements
extraction chromatography mutual separations platinum(IV) palladium(II) gold(III)
2010/3/30
The extraction behavior of platinum(IV) was studied with N-n-octylaniline as a function of different parameters, such as pH, concentrations of weak acids, mineral acids, reagents and elution time. A s...
Ambient formaldehyde measurements made at a remote marine boundary layer site during the NAMBLEX campaign – a comparison of data from chromatographic and modified Hantzsch techniques
Ambient formaldehyde measurements remote marine boundary layer NAMBLEX campaign chromatographic and modified Hantzsch techniques
2009/1/12
Ambient formaldehyde concentrations are reported from the North Atlantic Marine Boundary Layer Experiment (NAMBLEX) campaign at Mace Head on the west coast of Eire during August 2002. The results from...
Characterization of Molecular Interactions by Inverse Liquid Chromatographic Method
inverse liquid chromatography characterization molecular interactions
2007/12/13
Characterization of Molecular Interactions by Inverse Liquid Chromatographic Method。
Integrated Micro Bio Systems and High Performance Liquid Chromatographic System on Chip
micro bio system high performacne liquid chromatographic system
2007/8/5
Integrated Micro Bio Systems and High Performance Liquid Chromatographic System on Chip
Chromatographic Properties for Enantiomeric Separation of Amino Acid Derivatives on the Molecularly Imprinted Monoliths
molecular imprinting monolithic stationary phases chiral separation cross-reactivity thermodynamics
2007/8/5
Chromatographic Properties for Enantiomeric Separation of Amino Acid Derivatives on the Molecularly Imprinted Monoliths
GAS CHROMATOGRAPHIC STUDY ON THE INCLUSION PROPERTIES OF CALIX[4]ARENE DERIVATIVES
气相色谱法 杯芳烃衍生物 包结性能
2007/8/5
以苯系、醇系及卤代烃系列为探测物质，用气相色谱法首次研究了两种杯［４］芳烃衍生物在气－液条件下的包结性能。结果表明：Ｃ［４］Ａ可与苯、甲苯、甲醇、乙醇、二氯甲烷及三氯甲烷形成包结物，而Ｃ［４］Ｂ仅能与甲醇、二氯甲烷及三氯甲烷形成包结物。对其作用机理亦进行了初步探讨。
Performance Comparison between Monolithic C18 and Conventional C18 Particle-Packed Columns in the Liquid Chromatographic Determination of Propranolol HCl
Monolithic columns Chromolith Performance propranolol hydrochloride performance validation degradation products method transfer batch reproducibility
2010/4/19
Performance Comparison between Monolithic C18 and Conventional C18 Particle-Packed Columns in the Liquid Chromatographic Determination of Propranolol HCl.
A Computational Investigation for the Chiral Chromatographic Separation of Benzimidazole Type Sulphoxides
Molecular modelling sulphoxides molecular mechanics chiral separation chromatography
2010/4/21
The computational study of chromatographic separations has become increasingly important in recent years. It supplies useful information about the mechanism of chromatographic separations and the desi...
Gas Chromatographic Separation of Phenol Derivatives by Schiff-Base Liquid Crystalline Stationary Phases
Gas Chromatographic Separation Phenol Derivatives Schiff-Base Liquid Crystalline Stationary Phases
2010/4/21
The chromatographic behaviour of liquid crystalline compounds benzylidene-p-aminobenzoic acid and 4-(p-methyl benzylidene)-p-aminobenzoic acid as stationary phases for the separation of dimethylphenol...
Chromatographic Determination of Phenolic Acids in the Snowdrop by HPLC
Galanthus elwesii (snowdrop) phenolic acids HPLC
2010/4/21
Free and esterified phenolic acids of Galanthus elwesii (snowdrop) were extracted with petroleum ether and determined by HPLC. Cinnamic, ferulic, vanillic, p-coumaric, p-hydroxy benzoic, and caffeic a...
High-Performance Liquid Chromatographic Determination of Oxytetracycline Residue in Cured Meat Products
Oxytetracycline HPLC soudjouk cured meat
2010/6/27
The development of a sensitive automated method for residue control of oxytetracycline (OTC) in cured meat (soudjouk) is described. The principle steps involve the extraction of OTC from cured meat in...
Thin Layer Chromatographic Separation and Quantitation of L-Dopa and L-Tyrosine in Mixtures
TLC Separation L-Dopa-L-Tyrosine mixtures
2010/6/29
new TLC separation and quantitation method for L-tyrosine and L-Dopa mixtures was developed. The minimum tyrosine and Dopa quantities which can be measured by this technique are 0.7 and 1.5 m g respe...