Gas chromatography-mass spectrometry
Estimation of D-Arabinose by Gas Chromatography/Mass Spectrometry as Surrogate for Mycobacterial Lipoarabinomannan in Human Urine.
... Globally, tuberculosis is slowly declining each year and it is estimated that 37 million lives were saved between 2000 and 2013 through effective diagnosis and treatment. Currently, diagnosis relies on demonstration of ...
17
Development and validation of a methodology FOR analysis of biodiesel: diesel blends using gas chromatography-mass spectrometry.
... DEVELOPMENT AND VALIDATION OF A METHODOLOGY FOR ANALYSIS OF BIODIESEL: DIESEL BLENDS USING GAS CHROMATOGRAPHY-MASS SPECTROMETRY. The aim of this work was to develop and validate a method of ...
6
Pesticides residue determination in cattle plasma by gas chromatography-mass spectrometry.
... BY GAS CHROMATOGRAPHY-MASS ...and gas chromatographic determination of pesticides in cattle plasma is ...by gas chromatography-mass ...
4
Identification of the main components of guazatine fungicide by gas chromatography and gas chromatography-mass spectrometry.
... BY GAS CHROMATOGRAPHY AND GAS CHROMATOGRAPHY-MASS ...through gas chromatography and gas chromatography-mass ...
3
Gas chromatography-mass spectrometry analysis
... The methanol extract of Pseudomonas sp JJTBVK was used in different concentrations (25, 50, 75 and 100 mg/mL) in comparison with the standard drug to study the in vitro[r] ...
8
Determination of Pesticide Residues in Banana by Using High Performance Liquid Chromatography and Gas Chromatography-Mass Spectrometry
... Steven, J., A.D. Lehotay, K.M. Hiemstra and P.V. Bodegraven, 2005. Validation of a fast and easy method for the determination of residues from 229 pesticides in fruits and vegetables using gas and liquid ...
6
Development of headspace solid-phase microextraction-gas chromatography–mass spectrometry methodology for analysis of terpenoids in Madeira wines
... the mass spectrometer with ...and mass spectra obtained from the sample with those from the pure standards injected under the same conditions were also used ...
10
Determination of polychlorinated biphenyls in corn by solid phase extraction followed by gas chromatography-mass spectrometry.
... O objetivo do presente estudo foi validar um método de extração, envolvendo a utilização de ultrassom e a extração em fase sólida (EFS), seguida de cromatografia a gás (CG) acoplada à [r] ...
8
Compounds by Gas Chromatography-Mass Spectrometry
... and mass of the ...by gas chromatography coupled to mass ...the mass yield and all the variables studied in the sonication process were significant (p < ...
8
Fast Ephedrine Quantification by Gas Chromatography Mass Spectrometry
... who used GC-NPD. In addition, sample preparation was performed using a liquid-liquid extraction at alkaline pH, where the organic part was subsequently concentrated by evaporation and injected into a gas ...
8
J. Braz. Chem. Soc. vol.12 número4
... 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 ...
6
Quím. Nova vol.30 número8
... by gas chromatography/mass spectrometry for the presence of ...CP3800 gas chromatograph (Varian, California, USA) coupled to a Saturn 2000 mass selective detector (Varian, ...
2
J. Braz. Chem. Soc. vol.25 número1
... 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 ...
8
J. Braz. Chem. Soc. vol.11 número5
... tor) and HRGC-MS (high resolution gas chromatography - mass spectrometry). The HRGC-FID quantitative analyses were performed with an internal standard method for quantification of lupanine, ...
7
3 ∗ 1 Laboratório de Produtos Naturais, PN3, Far-Manguinhos, FIOCRUZ Rua Sizenando Nabuco, 100, 21041-250 Rio de Janeiro, RJ, Brasil
... by Gas Chromatography and Gas Chromatography/Mass Spectrometry of the essential oils obtained from leaves of Echinodorus grandiflorus (“Chapéu de couro”) from two different ...
6
J. Braz. Chem. Soc. vol.20 número3
... by gas chromatography–mass spectrometry (GC-MS) analysis of the products from the limonene (1-methyl-4-prop-1- en-2-yl-cyclohexene) disproportionation obtained from the catalytic hydrogenation ...
5
A method for analysis of vanillic acid in polar ice cores
... and gas chromatography–mass spectrometry (GC-MS), similar to techniques used for the analysis of biomass burning aerosols (Nolte et ...liquid chromatography with electro- spray ...
6
The role of miniaturized systems in analytical toxicology: new psychoactive substances
... liquid chromatography-diode array detector (HPLC–DAD), gas chromatography- mass spectrometry (GC–MS), liquid chromatography-mass spectrometry (LC–MS) or even using ...
157
J. Braz. Chem. Soc. vol.22 número8
... 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 ...
6