Chapter Pressurized Liquid Extraction and Liquid Chromatographic Analysis of Pesticide Residues

2016 ◽  
pp. 295-322
Keyword(s):  
Pesticide Residues ◽  
Chromatographic Analysis ◽  
Liquid Extraction ◽  
Pressurized Liquid Extraction ◽  
Liquid Chromatographic Analysis ◽  
Liquid Chromatographic

Alkaline Pre-Column for Use in Gas Chromatographic Pesticide Residue Analysis

1969 ◽  
Vol 52 (3) ◽  
pp. 548-553
Author(s):  
George A Miller ◽  
Clyde E Wells
Keyword(s):  
Pesticide Residues ◽  
Chromatographic Analysis ◽  
Relative Retention Time ◽  
Residue Analysis ◽  
Pesticide Residue Analysis ◽  
Time Data ◽  
Additional Information ◽  
Relative Retention ◽  
Liquid Chromatographic Analysis ◽  
Liquid Chromatographic

Abstract An alkaline pre-column is described for use with gas-liquid chromatographic analysis of pesticide residues. The alkaline layer is contained in one side of a column with dual injection ports so that it can be used when additional information is needed for better chromatogram interpretation. The alkaline pre-column destroys some pesticides, changes the retention times of others, and leaves some unaltered. Many troublesome crop peaks are eliminated, thereby permitting quantitation and/or identification of many pesticide residues. Physical column characteristics are described and relative retention time data are reported for 32 commonly found pesticides.

Separation of Pesticide Residues from Lipids Prior to Gas-Liquid Chromatographic Analysis

1976 ◽  
Vol 59 (1) ◽  
pp. 224-225
Author(s):  
Robert Lea
Keyword(s):  
Sulfuric Acid ◽  
Petroleum Ether ◽  
Sodium Hydroxide ◽  
Pesticide Residues ◽  
Chromatographic Analysis ◽  
High Yield ◽  
Chicken Fat ◽  
Dilute Sulfuric Acid ◽  
Liquid Chromatographic Analysis ◽  
Liquid Chromatographic

Abstract Lipids are separated from dieldrin, endrin, and p,p′-DDE residues by saponification in ethanolic sodium hydroxide, acidification with dilute sulfuric acid, and adsorption chromatography on deactivated alumina, using petroleum ether as the eluant. Dieldrin, endrin, and p,p′-DDE are efficiently recovered (95–102%), and p,p′-DDT is converted to p,p′-DDE, which is then recovered with high yield (90–96%). Extremely low lipid carryover (<0.3–0.5%) is observed for 0.5–1.0 g samples of chicken fat.

scholarly journals MSPD Sample Preparation Approach for Reversed-Phase Liquid Chromatographic Analysis of Pesticide Residues in Stem of Coconut Palm

2013 ◽  
Vol 91 (2) ◽  
pp. 160-164 ◽  
Author(s):  
Jordana Alves Ferreira ◽  
Luís Fabrício Santana Santos ◽  
Nicaellen Roberta da Silva Souza ◽  
Sandro Navickiene ◽  
Frederico Alberto de Oliveira ◽  
...  
Keyword(s):  
Sample Preparation ◽  
Pesticide Residues ◽  
Chromatographic Analysis ◽  
Reversed Phase ◽  
Coconut Palm ◽  
Liquid Chromatographic Analysis ◽  
Phase Liquid ◽  
Liquid Chromatographic
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