gas chromatography-electron capture detection
Hollow Fiber Microporous Membrane Liquid Liquid Extraction for Determination of Polybrominated Diphenyl Ethers at Trace Levels in Sewage Sludge with Gas Chromatography Electron Capture Detection
... A two-phase hollow-fiber (HF) liquid-phase microextraction (LPME) method followed by gas chromatography was developed for quantification of 8 major polybrominated diphenyl ethers at trace level in sewage ...
6
Validation of a multi residue method to determine deltamethrin and alpha cypermethrin in mosquito nets by gas chromatography with electron capture detection (GC μECD)
... A literature search on pesticides determination in mosquito nets was carried out on the ISI Web of Knowledge data and on the CIPAC web site. The following combinations of keywords were used for the search; Mosquito nets, ...
11
Use of two dimensional gas chromatography with electron capture detection for the measurement of lipopolysaccharides in peritoneal fluid and plasma from rats with induced peritonitis
... The content of 3-hydroxymyristic acid from Escherichia coli lipopolysaccharide in peritoneal fluid and plasma from rats was determined by two-dimensional gas chromatography with electron[r] ...
6
Assessment of Pesticide Residues in Some Fruits Using Gas Chromatography Coupled with Micro Electron Capture Detector
... A simple, effective and quick method based on determination of 26 pesticides in fruits using GC- ìECD with extraction assisted by sonication and SPE clean-up has been developed. The confirmations of these pesticides have ...
12
Assessment of Lindane and Atrazine Residues in Maize Produced in Ghana Using Gas Chromatography Electron Capture Detector (GC ECD) and Gas Chromatography Mass Spectrometry (GC MS)
... It is clearly seen from the results of the study that farmers and traders in the study area in Ghana do not follow appropriate safety precautions during pesticide application. Applicators thus experience ...
13
Analysis of fatty acids of the genus Rochalimaea by electron capture gas chromatography: detection of nonanoic acid
... quintana Fuller and Guadalupe, suggesting that nonanoic acid is a component of Rochalimaea cellular fatty acids under these growth conditions.. However, a portion of the acid was extract[r] ...
6
Optimization of Solid Phase Microextraction Procedure Followed by Gas Chromatography with Electron Capture Detector for Pesticides Butachlor and Chlorpyrifos
... liquid chromatography and gas chromatography with very low detection ...classical gas chromatographic methods are not satisfac- tory due to the thermal instability of the ...
13
Studies of metabolites in diarrheal stool specimens containing Shigella species by frequency pulsed electron capture gas liquid chromatography
... Figure 7 shows the FPEC-GLC results obtained by esterification of chloroform extracts of diarrheal stools with heptafluorobutyric anhydride for detection of hydroxy compounds or alcohols[r] ...
8
Selective procedures for detecting femtomole quantities of tuberculostearic acid in serum and cerebrospinal fluid by frequency pulsed electron capture gas liquid chromatography
... The necessary specificity and sensitivity for detection of C18 * CH3 were obtained by extraction under acid conditions with organic solvent, specific functional group esterification with[r] ...
6
Disposable reversed phase chromatography columns for improved detection of carboxylic acids in body fluids by electron capture gas liquid chromatography
... RESULTS TCE-derivatized standard mixtures of carboxylic acids C2 to C22, along with derivatized body fiuid and spent culture medium samples that had been derivatized and processed as des[r] ...
5
Pesticides Recovery and Detection from Agricultural Soil Leachates Using Gas Chromatography Masses with Electron Capture Detector
... 6890N gas chromatography (Agi- lent Technologies, CA, USA) coupled to a MS5975 mass spectrometer and equipped with a split/splitless injector ...carrier gas at a constant flow of ...the ...
12
Rapid diagnosis of tuberculous meningitis by frequency pulsed electron capture gas liquid chromatography detection of carboxylic acids in cerebrospinal fluid
... The frequency-pulsed electron-capture gas-liquid chromatography profile of carboxylic acids C2 through C22 along with identification of tuberculostearic acid, established by retention ti[r] ...
9
TRACE LEVEL QUANTIFICATION OF CYPIONYL CHLORIDE IN TESTOSTERONE CYPIONATE BY PRE COLUMN DERIVATIZATION WITH 2 BUTANOL BY GAS CHROMATOGRAPHY WITH ELECTRON IMPACT IONIZATION DETECTOR
... of Detection (LOD), Limit of Quantification (LOQ) and Precision at LOQ: The detection limit of an individual analytical procedure is the lowest amount of analyte in a sample which can be detected but not ...
6
Journal of Applied Pharmaceutical Science
... efficiency, gas chromatography, magnetite content, particle size, scanning electron microscopy (SEM), Fourier-Infrared spectroscopy (FT-IR), differential scanning calorimetry (DSC) and in vitro ...
6
Spectroscopic detection and hyphenated techniques in microfluidic enabled gas chromatography
... a gas phase ...(UV) detection were investigated first with a gas phase photometer and subsequently with a diode array ...liquid chromatography but successfully repurposed for gas ...
47
High-resolution error detection in the capture process of a single-electron pump
... the electron loading experiment is probing the same dy- namical process, which determines the DC current in pumping experiments, and furthermore suggests that the wide quantised pumping plateaus seen here and in ...
6
Detection and quantification of naringenin and kaempferol in melastoma decemfidum extracts by GC-FID and GC-MS
... liquid chromatography (HPLC) [7], HPLC coupled with ultraviolet (UV) spectroscopy [8], and combination of HPLC with simultaneous mass spectrometry and diode array detection ...[9]. Gas ...
8
CHEMICAL COMPOSITION AND ANTIMICROBIAL ACTIVITY OF THE ESSENTIAL OILS OF FOUR VARIETIES OF LIPPIA MULTIFLORA IN BENIN
... Objective: Present study involves the study of the chemical composition of the essential oils extracted from the leaves by gas chromatography and gas chromatography c[r] ...
6
Planar microfluidic devices and selective detection in gas chromatography : techniques and applications
... multidimensional gas chromatography (MDGC) was well articulated right from the first experiment; more than 50 years ago by Simmon and Snyder with the first dimension boiling-point separation of ...
85
Frequency pulsed electron capture gas liquid chromatographic analysis of metabolites produced by Clostridium difficile in broth enriched with amino acids
... Frequency-Pulsed Electron Capture Gas-Liquid Chromatographic Analysis of Metabolites Produced by Clostridium dijficile in Broth Enriched with Amino Acids JOHN B.. MOSS Division of Bacter[r] ...
10