Rapid analysis of cyclamate in foods and beverages by gas chromatography-electron capture detector (GC-ECD)

2012 ◽  
Vol 134 (4) ◽  
pp. 2424-2429 ◽  
Author(s):  
Shengbing Yu ◽  
Binghui Zhu ◽  
Fen Lv ◽  
Shaoxiao Li ◽  
Weixiong Huang
Keyword(s):  
Gas Chromatography ◽  
Electron Capture ◽  
Rapid Analysis ◽  
Electron Capture Detector

Gas Chromatographic Determination of N-Butyl-N-ethyl-α,α,α-trifluoro-2,6-dinitro-p-toluidine and α,α,α-Trifluoro-2,6-dinitro-N,N-dipropyl-p-toluidine in Formulations

1971 ◽  
Vol 54 (3) ◽  
pp. 711-712
Author(s):  
Martha Fuzesi
Keyword(s):  
Gas Chromatography ◽  
Quantitative Determination ◽  
Electron Capture ◽  
Chromatographic Method ◽  
Chromatographic Determination ◽  
Electron Capture Detector ◽  
Reference Solution ◽  
Gas Chromatographic Method

Abstract A gas chromatographic method is described for the quantitative determination of N-butyl-N-ethyl-α,α,α-trifluoro-2,6-dinitro-p-tolindine and α,α,α-trifluoro-2,6-dinitro-N,N-dipropyI-p-toluidine herbicides in formulations. The sample is extracted with benzene, and equal amounts of sample and reference solution in the same concentration range are analyzed by gas chromatography, using an electron capture detector and an SE-30/Diatoport S column. The method has been applied successfully to laboratory-prepared and commercial samples.

ANALYSIS OF C4 EXPLOSIVE RESIDUES ON POST BLAST HAIR SAMPLES

2012 ◽  
Vol 57 (1) ◽  
Author(s):  
UMI KALTHOM AHMAD ◽  
NOOR HIDAYAT ABU BAKAR ◽  
SHAIKH ABDUL ADZIZ SHAIKH ABDULLAH
Keyword(s):  
Gas Chromatography ◽  
Electron Capture ◽  
Capillary Column ◽  
Human Head ◽  
Electron Capture Detector ◽  
Pentaerythritol Tetranitrate ◽  
High Explosives ◽  
Hair Samples

The occurrence of crimes involving high explosives in Malaysia in recent years has warrant the need for the analysis of high explosives in post blast samples, particularly residues that could be found on hairs of victims. This study reports on the detection of post blast residues of C4 explosives on human head hairs. Prior to a simulated explosion, a bundle of hair (200 strands) was tightly bound to a metal hook at each point of several pre–determined distances from the bomb seat. Hair samples containing post blast residues were extracted by ultrasonication using acetonitrile. Two analytes of interest, cyclotrimethylenetrinitramine (RDX) and pentaerythritol tetranitrate (PETN) were successfully separated using gas chromatography with electron capture detector (GC–ECD) on an HP5–MS capillary column. It was found that the amount of explosive residues decreased with increasing distance from the point of blast. At the nearest specified distance of 2.5m, the amount of PETN residues deposited on hair was much less compared to that of RDX residues.

Determination of indicator polychlorinated biphenyls (PCBs) by gas chromatography–electron capture detector

Chemosphere ◽  
2013 ◽  
Vol 93 (8) ◽  
pp. 1556-1560 ◽  
Author(s):  
Samuel Afful ◽  
Johannes A.M. Awudza ◽  
Stevester K. Twumasi ◽  
Shiloh Osae
Keyword(s):  
Gas Chromatography ◽  
Polychlorinated Biphenyls ◽  
Electron Capture ◽  
Electron Capture Detector

scholarly journals Simultaneous Determination of Florfenicol and Florfenicol Amine in Fish, Shrimp, and Swine Muscle by Gas Chromatography with a Microcell Electron Capture Detector

2006 ◽  
Vol 89 (5) ◽  
pp. 1437-1442 ◽  
Author(s):  
Suxia Zhang ◽  
Fengyun Sun ◽  
Jiancheng Li ◽  
Linli Cheng ◽  
Jianzhong Shen
Keyword(s):  
Gas Chromatography ◽  
Detection Limit ◽  
Simultaneous Determination ◽  
Electron Capture ◽  
Solid Phase ◽  
Electron Capture Detector ◽  
Phase Extraction ◽  
Chromatography Method ◽  
Residue Study

Abstract A rapid and sensitive gas chromatography method was developed for the simultaneous determination of florfenicol (FF) and its metabolite florfenicol amine (FFA) in fish, shrimp, and swine muscle. The extracted samples were defatted with hexane and cleaned up by solid-phase extraction using Oasis MCX cartridges. The eluate was evaporated to dryness, and residues were derivatized and determined by gas chromatography with a microcell electron capture detector. Overall average recoveries ranged from 81.7 to 109.7% for fish, 94.1 to 103.4% for shrimp, and 71.5 to 91.4% for swine muscle. The detection limit was 0.5 ng/g for FF and 1 ng/g for FFA, respectively. The method was validated for the determination of incurred swine muscle samples in an actual residue study.

Effects of Collector Probe Irregularities in Electron Capture Gas Chromatography

1974 ◽  
Vol 57 (5) ◽  
pp. 1217-1220
Author(s):  
Edward R Holden ◽  
Kenneth R Hill
Keyword(s):  
Gas Chromatography ◽  
Electron Capture ◽  
Applied Voltage ◽  
Visual Detection ◽  
Radioactive Source ◽  
Instrumental Error ◽  
Electron Capture Detector ◽  
Electronic Noise ◽  
Surface Irregularities ◽  
Relationship Of

Abstract Barely visible scoring of a cylindrical electron collector probe had profound effects on the performance of an electron capture detector in gas chromatography: Electronic noise was increased greatly, relationship of response to applied voltage was reversed, and optimum distance between the probe and the radioactive source was shifted widely. Imperfections too small for visual detection, although having little effect on noise and response levels, were found to cause serious baseline instability. An instrumental error of as much as ± 50% due to surface irregularities can be eliminated by polishing the collector probe.

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