[PDF] Top 20 Gas chromatography-mass spectrometry analysis

... GC-MS analysis of the methanol extract showed the presence of naphth [2,3-B] azet-2 (1H) -one, 1- phenyl –, which was the characteristic compound showing the antibacterial ... See full document

... Sample analysis and description of GC-MS Conceptually, ACCBAR is a series of traps used to re- duce unwanted component(s) from the air sample matrix ...via mass spectrometry on a 20 min ...quadrupole ... See full document

... of gas chromatography-mass spectrometry and solid-phase microextraction for quantification of thymol and carvacrol in plasma and milk of dairy ...for analysis of this compound in plasma ... See full document

... by gas chromatography/mass spectrometry for the presence of ...CP3800 gas chromatograph (Varian, California, USA) coupled to a Saturn 2000 mass selective detector (Varian, ... See full document

... using gas chromatography (GC) coupled to either mass spectrom- etry (MS) [2,18,24,30,31], tandem mass spectrometry (MS/MS) [11,12]or flame ionization detector (FID) [32]; or liquid ... See full document

... The composition and antimicrobial activity of essential oils obtained from agarwood originating from Aquilaria sinensis (Lour.) Gilg induced by a biological agent of agarwood, Lasiodiplodia theobromae (F), were ... See full document

... Due to the lack of literature reports concerning the use of MSPD as an extraction technique for pesticides belonging to different chemical classes from medicinal plants (different plants and herbs exhibit different ... See full document

... others. Mass spectrometry (MS) studies based on capillary gas chromatography (CGC), paper spray (PS), and leaf spray (LS) ionization were carried out for alkaloid investigation of the native ... See full document

... The occurrence of the endocrine disruptor compounds, such as 4-nonylphenol isomers and bisphenol A was determined in surface water samples from Portugal. The analytical method used involved the preconcentration of 200 mL ... See full document

... FOR ANALYSIS OF BIODIESEL: DIESEL BLENDS USING GAS CHROMATOGRAPHY-MASS ...of analysis of biodiesel:diesel blends using HRGC-MS in SIM ... See full document

... thin-layer chromatography (HPTLC), combined gas chromatography (GC)/electron impact (EI)- mass spectrometry (MS), and flow-injection (FI)/electrospray ionization (ESI)-tandem mass ... See full document

... routine analysis there is often insufficient time to do ...the analysis and the time of the extraction, an extraction time of 60 min for must and 120 min for wine samples was selected for subsequent ... See full document

... In our study alkaloids extraction was carried out and it is the first time that a systematic analysis of alkaloids present in the leaves of Epipremnum aureum is reported. Most of the alkaloids were extracted with ... See full document

... DETERMINATION OF PLASTICIZERS IN DRINKING WATER USING GAS CHROMATOGRAPHY AND MASS SPECTROMETRY. This study investigated the levels of plasticizer endocrine disruptors (diethyl phthalate, ... See full document

... WITH GAS CHROMATOGRAPHY AND MASS ...with gas chromatography - mass spectrometry was validated for the quantitative determination of 18 organochlorine pesticides in ... See full document

... resolution mass spectrometry (HRMS) using atmospheric pressure chemical ionization (HRAPCIMS) was performed on a liquid chromatography-mass spectrometry ion trap and time-of-flight ... See full document

... Ademais, o método proposto, além de mostrar-se adequado para a determinação de AttM urinário para fins de biomonitorização da exposição ocupacional a baixos níveis de benzeno, apresen[r] ... See full document

... for analysis of vanillic acid in melted polar ice core ...liquid chromatography (HPLC) and detected using electrospray ionization–triple quadrupole mass spectrometry ...and analysis ... See full document

... by Gas Chromatography and Gas Chromatography/Mass Spectrometry of the essential oils obtained from leaves of Echinodorus grandiflorus (“Chapéu de couro”) from two different ... See full document

... [r] ... See full document