[PDF] Top 20 Fast Ephedrine Quantification by Gas Chromatography Mass Spectrometry
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Fast Ephedrine Quantification by Gas Chromatography Mass Spectrometry
... for cathine and norephedrine; the other ions were smaller than 10% of these base ions. Although all ephedrines have fragments similar to these, the molecules showed chromatographic selectivity and could be identified ... See full document
8
J. Braz. Chem. Soc. vol.28 número5
... samples, by using GC×GC-FID and two dimensional gas chromatography fast quadrupole mass spectrometry (GC×GC-QMS), in order to detect and identify possibly new compounds, through ... See full document
7
The role of miniaturized systems in analytical toxicology: new psychoactive substances
... situation, by means of methods development to identify and quantify these emerging psychoactive ...and quantification of new psychoactive drugs available in Portugal, namely salvinorin A, ketamine (K) and ... See full document
157
J. Braz. Chem. Soc. vol.27 número3
... supplied by the manufacturer. The high resolution mass spectrometry (HRMS) using atmospheric pressure chemical ionization (HRAPCIMS) was performed on a liquid chromatography-mass ... See full document
5
Determination of amphetamines-type stimulants in urine samples using microextraction by packed sorbent and gas chromatography-mass spectrometry
... salting-out spectrometry; SADLLME, surfactant -assisted dispersive liquid liquid microextraction; GC-MS, gas chromatography coupled to mass spectrometry; FID, flame ionization detector; ... See full document
70
Quantification of acrylamide in foods selected by using gas chromatography tandem mass spectrometry
... olo , p ečišća a je sa ast o o Ca ez I i II [ ], itd. )a k a tifika iju ak ila ida po oću GC–MS e g. gas h o atog aph – ass spe t o et ili LC–MS-MS e g. Li uid h o atog aph –ta de ass spe t o- et etode eći a ist ... See full document
7
Determination of Pesticide Residues in Banana by Using High Performance Liquid Chromatography and Gas Chromatography-Mass Spectrometry
... HPLC conditions: A Shimadzu CLASS-VP V6.13 SP2 Area% Report, Version 5.22 High performance liquid chromatography having UV/visible detector was used for identification and quantification of pesticides. ... See full document
6
A method for analysis of vanillic acid in polar ice cores
... This study demonstrates the feasibility of analyzing small ice core samples using HPLC-ESI-MS/MS with minimal sam- ple handling. The development of such rapid, low-volume, high-sensitivity analytical methods for analysis ... See full document
6
J. Braz. Chem. Soc. vol.14 número3
... expressed as flavor dilution (FD) factors: the ratio of the concentration of the odorant in the most concentrated extract to its concentration in the most diluted extract where the odor is still detected by ... See full document
4
Rev. bras. farmacogn. vol.25 número2
... Moyna, 1986), and only few studies have been reported (Pérez Parada et al., 2010; Jacques et al., 2006). Particularly, caffeine and saponins are co-extracted with pesticides as they have sim- ilar physicochemical ... See full document
7
Homogenity of oil and sugar components of flour amaranth investigated by GC-MS
... Gas chromatography with mass spectrometry (GC-MS) was used for per- forming a qualitative analysis of liposoluble and hydrosoluble flour extracts of three genotypes of Amaranthus ... See full document
6
Development of a rapid method for the determination of antibiotic residues in honey using UPLC-ESI-MSMS
... and fast multianalyte/multiclass ultra-performance liquid chromatography–tandem mass spectrometry (UPLC–MS/MS) method was developed and validated for the simultaneous analysis of 23 ... See full document
7
Determination of plasticizers in drinking water using gas chromatography and mass spectrometry.
... 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
8
J. Braz. Chem. Soc. vol.20 número3
... followed by gas-liquid chromatography with a FID detector and a DB- Wax capillary ...identified by comparing their retention times with those of authentic samples, using n-heptadecane or ... See full document
5
J. Braz. Chem. Soc. vol.11 número5
... The sum of the alkaloid content in the extract obtained by SFE using CO 2 modified with 10% ethanol and not sub- mitted to clean-up before HRGC-FID was the greater of all extraction methods. Unfortunately EtOH ... See full document
7
Molecularly imprinted solid-phase extraction of urinary trans-trans muconic acid and analysis by gas chromatography-mass spectrometry.
... 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
5
Linking biogenic hydrocarbons to biogenic aerosol in the Borneo rainforest
... plex, indicating that there may be additional BSOA tracers from other monoterpenes and sesquiterepenes that have not been identified. The product ion mass spectra for all eighteen compounds are given in SI ... See full document
29
J. Braz. Chem. Soc. vol.28 número5
... 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
12
Detection of SPM-1-Producing Pseudomonas aeruginosa and Class D beta-Lactamase-Producing Acinetobacter baumannii Isolates by Use of Liquid Chromatography-Mass Spectrometry and Matrix-Assisted Laser Desorption Ionization-Time of Flight Mass Spectrometry
... performed by incubating fresh bacterial inoculums from Mueller-Hinton agar plates (Oxoid, Basingstoke, United Kingdom) in a buffer-adjusted solution (20 mM Tris-HCl, pH ...recommended by the manufacturer. ... See full document
4
J. Braz. Chem. Soc. vol.21 número6
... methods by easier ...sample by hand-shake or Vortex with the same amount of acetonitrile in order to have a inal extract concentrated enough without the need of a solvent evaporation ... See full document
6
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