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11.618  Articles
1 of 1.163 pages  |  10  records  |  more records»
Tetraethylene glycol monomethyl ether (TEGMM) and tetraethylene glycol (TEG) modified silica were synthesized and used in capillary liquid chromatography as stationary phases. The stationary phases were prepared by chemically bonding TEGMM or TEG on silic... see more

This paper reports a multiresidue analytical method based on liquid-liquid extraction and capillary gas chromatography with electron-capture detection (LLE-GC-ECD). The determined analytes belong to two organochlorinated compound classes: polychlorinated ... see more

As high-performance liquid chromatography is the most optimal method for qualitative and quantitative analysis of multicomponent medicines, including phytomedicines, – owing to the possibility to identify and quantify the substances of different volatilit... see more

The qualitative composition of the biologically active compounds (BAC) of the Centaurium erythraea Rafn. and Centaurium pulchellum (Sw.) Druce herb was determined by the method of Liquid chromatography-mass spectrometry (LC-MS). Approximately 30 compounds... see more

The aim of this study is to determine pharmacokinetics of diclofenac sodium in the experiment on rats by the method of high-performance liquid chromatography. Identification and quantitative determination of diclofenac sodium in the substance of diclofena... see more

For the study of quantitative determination of diclofenac sodium, sample preparation of biological objects has been performed. Linear dependence of diclofenac sodium peak area and substance concentration in the solution (5-25 mg/ml) has been proved. The m... see more

The following optimal conditions for chromatographic separation were revealed: a C8 column (250*4.6 mm, a mobile phase speed of 1 ml/min, a column thermostat temperature of 35 °C, a detection wavelength of 300 nm. Under the proposed conditions, the retent... see more

At present, inulin is often added to multivitamin syrup product. The determination of the component of preparation both qualitatively and quantitatively is important to ensure quality of the product. This research is aimed to develop a high performance li... see more

A sensitive, reproducible reverse-phased high performance liquid chromatography electrospray tandem mass spectrometry (HPLC-ESI-MS/MS) method with simple sample preparation was developed for the simultaneous determination of a wide range of ceramides, dia... see more

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