Gas-liquid chromatography system with flame ionization, phosphorus, sulfur, nitrogen, and electron capture detectors operating simultaneously for pesticide residue analysis

1975 ◽  
Vol 47 (4) ◽  
pp. 674-679 ◽  
Author(s):  
H. A. McLeod ◽  
A. G. Butterfield ◽  
D. Lewis ◽  
W. E. J. Phillips ◽  
D. E. Coffin
Keyword(s):  
Liquid Chromatography ◽  
Electron Capture ◽  
Pesticide Residue ◽  
Residue Analysis ◽  
Gas Liquid Chromatography ◽  
Pesticide Residue Analysis ◽  
Flame Ionization ◽  
Electron Capture Detectors ◽  
Liquid Chromatography System

Thin-Layer Chromatography for Chlorinated Pesticide Residue Analysis

1963 ◽  
Vol 46 (5) ◽  
pp. 884-893 ◽  
Author(s):  
Martin F Kovacs
Keyword(s):  
Liquid Chromatography ◽  
Thin Layer ◽  
Thin Layer Chromatography ◽  
Pesticide Residue ◽  
Pesticide Residues ◽  
Residue Analysis ◽  
Rapid Screening ◽  
Gas Liquid Chromatography ◽  
Pesticide Residue Analysis ◽  
Layer Chromatography

Abstract A rapid sensitive method for the application of thin-layer chromatography to the detection and estimation of chlorinated organic pesticide residues has been developed. Compared to paper chromatography the method is faster, more sensitive, and in most cases more specific. Chlorinated pesticide residues were identified in extracts of various food products at concentrations as low as 1 part per billion; these results were verified by gas-liquid chromatography. Because of its simplicity, speed, and sensitivity, thin-layer chromatography is suitable as a rapid screening method or as a confirmatory method in conjunction with gas-liquid chromatography or other analytical methods for chlorinated pesticide residue analysis.

Evaluation of an alternative fluorinated chitosan as a QuEChERS adsorbent for pesticide residue analysis in apple samples

2019 ◽  
Vol 11 (27) ◽  
pp. 3460-3466 ◽  
Author(s):  
Qilin Deng ◽  
Liping Sun ◽  
Tao Zhu
Keyword(s):  
High Performance Liquid Chromatography ◽  
Liquid Chromatography ◽  
Pesticide Residue ◽  
Pesticide Residues ◽  
High Performance ◽  
Residue Analysis ◽  
Pesticide Residue Analysis ◽  
Quechers Method

In this study, a new and green fluorinated chitosan (trifluoroethyl methacrylate-chitosan (TFEMA-CTS)) was synthesized, and the QuEChERS method was applied for the effective determination of four pesticide residues in apple samples by high performance liquid chromatography.

Vacuum Sublimation Cleanup Procedure for Pesticide Residue Analysis

1965 ◽  
Vol 48 (4) ◽  
pp. 738-744
Author(s):  
Richard P Farrow ◽  
Edgar R Elkins ◽  
Lowrie M Beacham
Keyword(s):  
Pesticide Residue ◽  
Residue Analysis ◽  
Food Product ◽  
Gas Liquid Chromatography ◽  
Pesticide Residue Analysis ◽  
Vacuum Sublimation ◽  
Plant Materials ◽  
Chromatographic Columns ◽  
Cleanup Procedure ◽  
Selection Of

Abstract Vacuum sublimation at pressures less than 2 μ and at a temperature of 85°C has been used as a cleanup method to prepare pesticide residue extracts for detection and estimation by gas-liquid chromatography. Most of the 35 pesticide compounds tested could be sublimed from spinach and other food product extractives in analytically useful amounts. Gas chromatographic columns used on these sublimates performed well for long periods before becoming contaminated with plant materials. Some materials can be cleaned up sufficiently for thinlayer or paper chromatography, but in most instances supplementary cleanup is required before these methods can be applied to sublimates. In two years of use on a number of sample materials, vacuum sublimation proved to be a useful addition to the selection of cleanup methods available for residue analysis.

Assessment of matrix effects in gas chromatography electron capture pesticide-residue analysis

2003 ◽  
Vol 57 (9-10) ◽  
pp. 657-664 ◽  
Author(s):  
M. E. Hernández Torres ◽  
F. J. Egea González ◽  
L. Cuadros-Rodríguez ◽  
E. Almansa López ◽  
J. L. Martínez Vidal
Keyword(s):  
Gas Chromatography ◽  
Electron Capture ◽  
Pesticide Residue ◽  
Matrix Effects ◽  
Residue Analysis ◽  
Pesticide Residue Analysis
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