the aim of this study was to develop an easy analytical method for determining flam prop-m- iso propyl residues in honey by high performance liquid chromatography with uv detection (hplc/uv) for routine analysis. chromatographic separation was carried out at room temperature on a zorbax eclipse xdb- c18, 100 å pore size, 5 μm particle size (300 mm × 3 mm i.d.) column using a mobile phase of met...

The "P-postlabeling procedure, developed originally by Randerath and coworkers, has been modified for the detection and analytical quantitation of O'-alkyl-2'-deoxyguanosine residues in DNA. Chromato graphie techniques were developed to resolve individually the normal deoxyribonucleotide-3'-monophosphates and the O'-alkyldeoxyguanosine-3'-monophosphates by high-pressure liquid chromatography. S...

Extraction and determination of naproxen from human plasma were performed using Vortex-Assisted Inverted Dispersive Liquid-Liquid MicroExtraction (VA−IDLLME) and High-Performance Liquid Chromatography (HPLC). The parameters affecting extraction recovery such as type and volume of extraction and disperser solvents, pH of sample solution, stirring rate, extraction time and salt addition were ...

A simple, rapid, accurate, precise and economical reverse phase high performance liquid chromato graphic method has been developed for simultaneous estimation of Doxophylline and Montelukast sodium. The separation of drugs was achieved on Inertsil Ph-3 column (250 mmx4.6 mm id, 5 μm particle size) with mobile phase of Ammonium acetate 0.05milimolar and Glacial acetic acid buffer (pH 3.5): Metha...

the high mobility group (hmg) of nonhistone proteins have been investigated using two high performance liquid chromatographic techniques (hplc). reversed-phase hplc under conditions of 50 mm triethylamine adjusted to ph 2.2 with phosphoric acid (solvent a) and 95% acetonitrile in water (solvent b) was used to separate proteins primarily on the basis of differences in the overall hydrophobicity....

Dispersive liquid-liquid microextraction method (DLLME) combined with high-performance liquid chromatography-ultraviolet detection (HPLC-UV) was used to determine thiamine (B1), nicotinamide (B3) and pyridoxine (B6) in sour cherry juice. This method was rapid, simple and sensitive. Separation was accomplished using a C18 column. The optimum chromatographic conditions were found to be: mobile ph...

background and objectives: a method was developed and validated for determining 15 polycyclic aromatic hydrocarbons (pahs) in refined olive and refined pomace olive oils using high performance liquid chromatography coupled with a fluorescence detector. materials and methods: the sample preparation involved liquid–liquid extraction with organic solvent and low temperature clean-up. the low tempe...