Background: Sevoflurane is a polyfluorinated compound extensively used as an inhalation anesthetic in patients undergoing surgery. If administered outside the operating room, sevoflurane dangerous and potentially lethal, toxicologists may be asked to investigate its presence biological matrices for forensic purposes. The aim of present study develop validate method detection quantification flui...

Comprehensive two-dimensional gas chromatography (GC x GC) is applied to analysis of drug standard mixtures containing 78 drugs of interest in forensic samples. For this study, underivatised drugs were employed. While several of the drugs were not detected at the low concentrations employed in the samples, most could be satisfactorily assigned their first and second dimension retentions in the ...


 ABSTRACT. The chemical composition of hydro-distilled essential oil dried roots Anaphalis contorta Hook F. was analyzed for the first time by using gas chromatography equipped with flame ionization detector (GC-FID) and coupled mass spectrometry (GC-MS). compounds were identified according to their spectra relative retention indices determined on a capillary GC column (non-polar stationa...

abstract: acrylamide is a chemical compound that has been widely used since the last century for various applications. it is also formed from carbohydrate and amino acid containing foods by application of heat particularly in fried potato products, coffee and bread. since bread is one of the primary foods of iranian people, the determination of acrylamide content in bread might be considered im...

During the MINOS campaign in August 2001 comprehensive two-dimensional gas chromatography (GC×GC) was applied to the in situ measurements of atmospheric volatile organic compounds (VOCs) at the Finokalia ground station, Crete. The measurement system employs a thermal desorption unit for on-line sampling and injection, and a GC×GC separation system equipped with a flame ionization detector (FID)...

The paper aims to compare the chemical compositions of essential oils and anatomical properties secretory structures differences between R. damascena which is cultivated in Iğdır Isparta (EOI1, EOI2, EOIg). GC/ MS GC-FID were utilized for analysis. Nonadecane (31.0%), heneicosane (21.1%), citronellol (16.8%), 1-nonadecene (6.2%) primal constituents EOI1. (29.3%), (17.6%), (18.6%), 1- nonadecene...

In this present study, it was aimed to determine the composition of essential oil obtained by water distillation from aerial parts Origanum acutidens. The analysed GC-FID and GC/MS. Carvacrol (69.3%), p-cymene (8.3%), y-terpinene (6.3%), β-caryophyllene (2.7%) borneol (2.2%) were found as main constituents. addition, headspace-solid phase microextraction using a Polydimethylsiloxane-Divinylbenz...

The objective was to develop a simple routine method for quantitative measurement of endogenous formic acid in plasma and whole blood using headspace gas chromatography-flame ionization detection. (GC-FID). Two-hundred microliters of sample was placed in a 1-mL glass vial. Fifty microliters of aqueous ethanol (10%) was added as an internal standard and a derivatizing agent. Ethylformate formati...

A simple, low-cost, and effective cooling/heating-assisted headspace solid-phase microextraction (CHA-HS-SPME) device, capable of direct cooling the fiber to low temperatures and simultaneous heating the sample matrix to high temperatures, was fabricated and evaluated. It was able to cool down the commercial and handmade fibers for the effective tapping of volatile and semi-volatile species in ...

Insight into the composition of middle distillates is essential to meet requirements for product quality but also in terms complying with ever more stringent environmental regulations. A newly introduced vacuum ultraviolet absorbance detector (VUV) possesses both quantitative and qualitative abilities amenable hyphenation comprehensive two-dimensional gas chromatography (GC×GC). It has good sel...