Geographical origin classification of Phoebe zhennan and Phoebe bournei by solid phase micro-extraction and gas chromatography-mass spectrometry

Determination of Volatile Compounds in Romanian White Wines by Headspace Solid-phase Micro-extraction and Gas Chromatography – Mass Spectrometry

ANAMARIA HANGANU1*, MARIA-CRISTINA TODASCA2, FULVIA-ANCUTA MANOLACHE3, SORIN ROSCA2 1Romanian Academy, Organic Chemistry Center “Costin D. Nenitzescu” 202B Splaiul Independentei, 060023, Bucharest, Romania 2 University “Politehnica” of Bucharest, Faculty of Applied Chemistry and Materials Science, “ Costin D. Nenitzescu” Organic Chemistry Department, 1-7 Polizu Str., 011061, Bucharest, Romania ...

ultra trace determination of water odorants in amir kabir dam by modified solid phase micro extraction and gas chromatography-mass spectrometry

in the present work a modified in-tube solid phase microextraction technique followed by gas chromatography-mass spectrometry (gc-ms) has been applied for determination of water odorants. geosmin, 2-methyl isoborneol, 2-isopropyl-3-methoxy pyrazine, 2-isobutyl-3-methoxy pyrazine and 2,4,6-trichloroanisol are of the most important odorants which have been studied. in the described method, analyt...

Extraction and Detection of Pentobarbital in Soil by Solid Phase Extraction and Liquid Chromatography / Mass Spectrometry

Enzymatic digestion, solid-phase extraction, and gas chromatography/mass spectrometry of derivatized intact oxazepam in urine.

Enzymatic digestion with beta-glucuronidase (EC 3.2.1.31) was used to release intact oxazepam from urine samples containing the d5-analog internal standard. The resulting specimens were extracted with Du Pont PREP Type W cartridge (processed by a PREP Automated Sample Processor), Bond Elut Certify, and J.T. Baker "spe" columns for comparison of the columns' extraction recovery and overall effec...

Perchloroethylene Analysis by Chemical Oxidation and Determination of Intermediate Products by Gas Chromatography, Mass Spectrometry

Abstract Background and Objective: Perchloroethylene (PCE) is a chlorinated hydrocarbon used as a solvent in many industrial processes. In contaminated water and soil a great deal of PCE is found. This study aimed to determine the rate of decomposition of PCE occurred after advanced oxidation. Material and Methods: In this descriptive-analytic study conducted (2011) in public health faculty...