a very simple, rapid and sensitive dispersive liquid-liquid microextraction (dllme) followed by gas chromatography and flame ionization detection (gc-fid) was developed for the determination of phenol and carvacrol in honey samples. a mixture of 100 µl dichloromethane (extraction solvent) and 0.5 ml acetonitrile (disperser solvent) was rapidly injected into sample solution. thereby a cloudy sol...

A simple, fast, inexpensive, and sensitive technique for the detection and identification of flammable or combustible liquid residues on the skin of arson suspects is presented. The use of solid phase microextraction (SPME) for the analysis of ignitable liquid residues has been demonstrated and it is shown in this work that this technique is effective in extracting these liquid residues at extr...

Aerobic biodegradation behavior of nonylphenol propoxylates was investigated using dispersive liquid-liquid microextraction as a simple and fast technique for sample preparation. The developed method proved to be efficient for the isolation and concentration of nonylphenol propoxylates before their quantification with the use of high performance liquid chromatography. The primary biodegradation...

a simple and rapid microextraction procedure based on the application of magnetic nanoparticles and hydrophobic 1-hexylpyridinium hexafluorophosphate [hpy][pf6] ionic liquid (il) was applied to trace determination of gatifloxacin. a mixture of [hpy][pf6] and magnetic nanoparticles was injected into the sample solution containing the analyse of interest and a cloudy solution was formed. after ce...

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...

in this study, we combined ionic liquid-based dispersive liquid liquid micro extraction (il-dllme) with faas for determining the palladium in different real samples at the trace level. 1-hexyl-3-methylimidazolium hexafluorophosphate [hmim][pf6] ionic liquid and 1-(2-pyridylazo) 2-naphthol (pan), were chosen as the extraction solvent and the chelating agent, respectively. the hydrophobic pd–pan ...