Identification of PCB Congeners by Gas Chromatography Electron Capture Detection Employing a Quantitative Structure-Retention Model

1995 ◽  
Vol 67 (15) ◽  
pp. 2548-2555 ◽  
Author(s):  
Yuriy V. Gankin ◽  
Aleksandr E. Gorshteyn ◽  
Albert. Robbat
Keyword(s):  
Gas Chromatography ◽  
Electron Capture ◽  
Electron Capture Detection ◽  
Quantitative Structure ◽  
Retention Model ◽  
Pcb Congeners ◽  
Structure Retention

scholarly journals Levels of Seven PCBs Used as Markers of Dioxin in Commercial Pork Meat in Spain

2001 ◽  
Vol 84 (6) ◽  
pp. 1799-1801 ◽  
Author(s):  
Teresa J López y López-Leitón ◽  
María E Alvarez Piñeiro ◽  
María A Lage Yusty ◽  
José L Cortizo Daviña
Keyword(s):  
Gas Chromatography ◽  
Linear Relationship ◽  
Supercritical Fluid Extraction ◽  
Supercritical Fluid ◽  
Electron Capture ◽  
Electron Capture Detection ◽  
Pork Meat ◽  
Pcb Congeners ◽  
Meat Samples ◽  
The Individual

Abstract The levels of 7 PCBs used as markers of dioxin in 62 pork meat samples (head, loin, and dewlap) were determined by supercritical fluid extraction and gas chromatography with electron capture detection. Analytical limits of detection for the individual congeners ranged from 0.048 to 0.2 ng/g dry wt. PCB congeners 153 and 180 were detected in all samples. Among congeners in general, PCB 52, 101, and 153 were the most abundant. There was a linear relationship with a good correlation between PCB 101 and PCB 52.

Residue Analysis of Organophosphorus and Organochlorine Pesticides in Fatty Matrices by Gas Chromatography Coupled with Electron-Capture Detection

2006 ◽  
Vol 61 (5-6) ◽  
pp. 341-346 ◽  
Author(s):  
Jae-Woo Park ◽  
A. M. Abd El-Aty ◽  
Myoung-Heon Lee ◽  
Sung-Ok Song ◽  
Jae-Han Shim
Keyword(s):  
Gas Chromatography ◽  
Electron Capture ◽  
Simple Procedure ◽  
Linear Regression Analysis ◽  
Residue Analysis ◽  
Electron Capture Detection ◽  
Relative Standard ◽  
Wide Range ◽  
Repeatability And Reproducibility

A multiresidue method for the simultaneous determination of 22 organochlorine (OCs) and organophosphorus (Ops) pesticides (including isomers and metabolites), representing a wide range of physicochemical properties, was developed in fatty matrices extracted from meat. Pesticides were extracted from samples with acetonitrile/n-hexane (v :v, 1:1). The analytical screening was performed by gas chromatography coupled with electron-capture detection (ECD). The identification of compounds was based on their retention time and on comparison of the primary and secondary ions. The optimized method was validated by determining accuracy (recovery percentages), precision (repeatability and reproducibility), and sensitivity (detection and quantitation limits) from analyses of samples fortified at 38 to 300 ng/g levels. Correlation coefficients for the 22 extracted pesticide standard curves (linear regression analysis, n = 3) ranged from 0.998 to 1.000. Recovery studies from 2 g samples fortified at 3 levels demonstrated that the GC-ECD method provides 64.4-96.0% recovery for all pesticides except 2,4′-DDE (44.6-50.4%), 4,4′-DDE (51.1-57.5%) and 2,4′-DDT (50.0-51.2%). Both repeatability and reproducibility relative standard deviation values were < 20% for all residues. Detection limits ranged from 0.31 to 1.27 ng/g and quantification limits were between 1.04 and 4.25 ng/g. The proposed analytical method may be used as a simple procedure in routine determinations of OCs and Ops in meat. It can also be applied to the determination of pesticide multi-residues in other animal products such as butter and milk.

Trace analysis of isocyanates in industrial atmospheres using gas chromatography and electron-capture detection

1981 ◽  
Vol 208 (2) ◽  
pp. 313-321 ◽  
Author(s):  
G. Skarping ◽  
C. Sangö ◽  
B.E.F. Smith
Keyword(s):  
Gas Chromatography ◽  
Electron Capture ◽  
Trace Analysis ◽  
Electron Capture Detection

Evaluation of comprehensive two-dimensional gas chromatography with micro-electron capture detection for the analysis of seven pesticides in sediment samples

2011 ◽  
Vol 1218 (21) ◽  
pp. 3166-3172 ◽  
Author(s):  
Juliana Macedo da Silva ◽  
Cláudia Alcaraz Zini ◽  
Elina Bastos Caramão
Keyword(s):  
Gas Chromatography ◽  
Electron Capture ◽  
Electron Capture Detection ◽  
Two Dimensional ◽  
Sediment Samples

Method for the Determination of Organophosphorus and Pyrethroid Pesticides in Food via Gas Chromatography with Electron-Capture Detection

2010 ◽  
Vol 58 (3) ◽  
pp. 1396-1402 ◽  
Author(s):  
Ronald E. Hunter ◽  
Anne M. Riederer ◽  
P. Barry Ryan
Keyword(s):  
Gas Chromatography ◽  
Electron Capture ◽  
Electron Capture Detection ◽  
Pyrethroid Pesticides
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