gas chromatography
Optimization of a headspace solid phase microextraction and gas chromatography/mass spectrometry procedure for the determination of aromatic amines in water and in polyamide spoons
... and gas chromatography coupled with mass spectrometry (HS-SPME-GC/MS), aniline (A), 4,4’-diaminodiphenylmethane (4,4’-MDA), 2,4-diaminotoluene (2,4- TDA), 3-chloro-4-fluoroaniline (3C4FA), 2-aminobiphenyl ...
44
Ad hoc blocked design for the robustness study in the determination of dichlobenil and 2,6 dichlorobenzamide in onions by programmed temperature vaporization gas chromatography–mass spectrometry
... [12] F. David, B. Tienpont, C. Devos, O. Lerch, P. Sandra, Increasing productivity for the analysis of trace contaminants in food by gas chromatography–mass spectrometry using automated liner exchange, ...
39
GAS CHROMATOGRAPHY AND LIPIDS
... high-temperature gas chromatography, and this is the subject of Chapter ...Similarly, gas chromatography is an excellent procedure for the separation of molecular species of mono- ...
191
Determination of Volatiles in Mouse Urine by Headspace Solid Phase Microextraction and Gas Chromatography Mass Spectrometry
... The extraction and determination of volatile compounds in mice urine were performed using headspace solid-phase microextraction with by gas chromatography- mass spectrometry. In order to optimize the ...
9
Gas Chromatography Mass Spectrometry Profiles of Ten Pilea Species (Urticaceae)
... using gas chromatography-mass spectral profiles analysis; which allowed us to identify 33 compounds type monoterpene, sesquiterpene, diterpene, free fatty acids or their methyl, ethyl esters or amides, and ...
10
Determination of PBDEs in human breast adipose tissues by gas chromatography coupled to triple quadrupole mass spectrometry
... of gas chromatography / tandem mass spectrometry with triple quadrupole analyzer for determination of 12 polybrominated diphenyl ethers in human breast tissues has been ...
35
Characterization of commercial synthetic resins by pyrolysis gas chromatography/mass spectrometry : application to modern art and conservation
... temperature resolved mass spectrometry, Py-GC/MS) have been developed without any derivatization, i.e., pyrolysis can be applied directly to the solid sample, avoiding previous treatments. Py- GC/MS is based on the ...
8
Analysis of fatty acids methyl esters standardization by the gas chromatography coupled to mass spectrometry technique
... A fatty acids methyl esters (FAME’s) analysis standardization was made by gas chromatography-mass spectrometry (GC-MS), using electronic (EI) and chemical ionization (CI). Accuracy, linearity, detection and ...
6
Analytical strategy based on the use of liquid chromatography and gas chromatography with triple quadrupole and time of flight MS analyzers for investigating organic contaminants in wastewater
... of gas chromatography (GC) and liquid chromatography (LC), both coupled to mass spectrometry (MS), is required to have a realistic and more complete overview of the organic pollution present in these ...
41
Dealing with the ubiquity of phthalates in the laboratory when determining plasticizers by gas chromatography/mass spectrometry and PARAFAC
... Aside from health concerns, their ubiquity can cause frustration and big trouble when analysing them, especially if trace analyses of phthalates by chromatographic methods are to be carried out [12,13]. ...
44
Effect of the cleaning procedure of Tenax on its reuse in the determination of plasticizers after migration by gas chromatography/mass spectrometry
... 7890A gas chromatograph coupled to an Agilent 5975C mass spectrometer detector (Agilent Technologies, Santa Clara, CA, ...The gas chromatograph was equipped with an Agilent HP-5MS Ultra Inert (30 m × ...
40
Control de calidad de residuos de biocidas en frutos de Silybum marianum L
... the gas chromatography method for quantitative determination of organochlorine biocides In view of that the gas chromatography method for quantitative determination of organochlorine biocides ...
8
Automated sample preparation methods for the determination of trace level concentrations of environmental pollutants
... liquid chromatography for multiresidue ...liquid chromatography (LC), and the disposable nature of the column on the analytical performance were investigated in ...
227
Análisis, biodisponibilidad y vigilancia de contaminantes orgánicos hidrofóbicos en el medio acuático
... Head Space), de manera que se produce una partición del analito entre la fase polimérica y la muestra. El recubrimiento convencional tiene un grosor de 100 µm y un volumen total de unas 0.5 µL por fibra, con lo que ...
251
TítuloPurification and characterization of phycocyanin from the marine cyanobacterium Synechococcus sp IO9201
... β subunits present in an equimolecular stoichiometry [5-7]. Phycobiliproteins are easily isolated as pigment-protein complexes, soluble in water and very fluorescent [8J. Thus, the purification procedure is facilitated ...
18
Partial Characterization of Venom from the Colombian Spider Phoneutria Boliviensis (Aranae:Ctenidae)
... This is the first report of partial characterization of venom from the Ctenidae spider P. boliviensis. There is a growing interest in venom from different arachnids since they represent a wide pharmacological library of ...
16
Desarrollo e implementación de una metodología para la detección de pesticidas organoclorados mediante cromatografía de gases acoplada a espectometría de masas
... Gas chromatography combined with electron capture detector has become a routine technique for organochlorine pesticide ...by gas chromatography coupled with mass ...
164
Progressing the analysis of Improvised Explosive Devices: Comparative study for trace detection of explosive residues in handprints by Raman spectroscopy and liquid chromatography
... liquid chromatography (ion chromatography (IC) and reversed-phase high performance liquid chromatography (RP-HPLC)) to detect, identify and quantify residues in human handmarks of explosives and ...
24
Identification of anaerobic nonsporeforming gram positive bacilli by biochemical tests and gas liquid chromatography
... Recovery and identification of the strains. Lyophi- lized strains were rehydrated in Tioglycolate broth NIH (Bioxon No. 284-1). Strains were grown in tripticase soy agar (Bioxon No. 108-1) to observe catalase ...
9
Analysis of antioxidants from orange juice using countercurrent supercritical fluid extration, micellar electrokinetic chromatography and reverse phase HPLC / C Barbas [et al ]
... liquid chromatography (LC) with mass spectrometry (MS) and diode array detection (DAD) has been already demonstrated to identify, for example, nonvolatile components in lemon peel ...liquid chromatography ...
6