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

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.

Hollow-fiber solvent bar microextraction with gas chromatography and electron capture detection determination of disinfection byproducts in water samples

2015 ◽  
Vol 38 (22) ◽  
pp. 3945-3953 ◽  
Author(s):  
Liliana Correa ◽  
Jhon Alex Fiscal ◽  
Sandra Ceballos ◽  
Alberto de la Ossa ◽  
Gonzalo Taborda ◽  
...  
Keyword(s):  
Gas Chromatography ◽  
Electron Capture ◽  
Hollow Fiber ◽  
Water Samples ◽  
Disinfection Byproducts ◽  
Electron Capture Detection ◽  
Solvent Bar Microextraction

scholarly journals The determination of PCBs in Rocky Flats Type IV waste sludge by gas chromatography/electron capture detection. Part 2

10.2172/95289 ◽  
1994 ◽  
Author(s):  
K.J. Parish ◽  
D.V. Applegate ◽  
P.D. Postlethwait ◽  
A.S. Boparai ◽  
G.T. Reedy
Keyword(s):  
Gas Chromatography ◽  
Electron Capture ◽  
Electron Capture Detection ◽  
Rocky Flats ◽  
Waste Sludge ◽  
Type Iv
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