Residue Analysis of Organochlorine, Organophosphate, and Pyrethroid Pesticides in Human Biological Specimens by Gas Chromatography–Microelectron Capture Detector (GC-μECD)

2021 ◽  
pp. 119-144
Author(s):  
Nicolás Fernández ◽  
Gloria Beatríz Alvarez ◽  
María Eugenia Rodriguez Girault ◽  
Patricia Noemí Quiroga ◽  
Adriana Silvia Ridolfi
Keyword(s):  
Gas Chromatography ◽  
Residue Analysis ◽  
Pyrethroid Pesticides

scholarly journals Current Strategies for Studying the Natural and Synthetic Bioactive Compounds in Food by Chromatographic Separation Techniques

Processes ◽  
2021 ◽  
Vol 9 (7) ◽  
pp. 1100
Author(s):  
Wioletta Parys ◽  
Małgorzata Dołowy ◽  
Alina Pyka-Pająk
Keyword(s):  
Gas Chromatography ◽  
Bioactive Compounds ◽  
Residue Analysis ◽  
Food Products ◽  
Vital Role ◽  
Bioactive Molecules ◽  
Validation Parameters ◽  
Layer Chromatography ◽  
Natural And Synthetic

The present study summarizes the new strategies including advanced equipment and validation parameters of liquid and gas chromatography methods i.e., thin-layer chromatography (TLC), column liquid chromatography (CLC), and gas chromatography (GC) suitable for the identification and quantitative determination of different natural and synthetic bioactive compounds present in food and food products, which play an important role in human health, within the period of 2019–2021 (January). Full characteristic of some of these procedures with their validation parameters is discussed in this work. The present review confirms the vital role of HPLC methodology in combination with different detection modes i.e., HPLC-UV, HPLC-DAD, HPLC-MS, and HPLC-MS/MS for the determination of natural and synthetic bioactive molecules for different purposes i.e., to characterize the chemical composition of food as well as in the multi-residue analysis of pesticides, NSAIDs, antibiotics, steroids, and others in food and food products.

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.

Determination of multiple organochlorine pesticide residues in shrimp using modified QuEChERS extraction and gas chromatography

2018 ◽  
Vol 16 (1) ◽  
pp. 81-93
Author(s):  
MDH Prodhan ◽  
SN Alam
Keyword(s):  
Gas Chromatography ◽  
Organochlorine Pesticide ◽  
Pesticide Residues ◽  
Limit Of Detection ◽  
Residue Analysis ◽  
Limit Of Quantification ◽  
Modified Quechers ◽  
Endosulfan Sulphate ◽  
Organochlorine Pesticide Residues

Determination of organochlorine pesticide residues in shrimp is very important to ensure the consumer’s safety and to fulfill the importer’s demand. Therefore, a simple and efficient multiple organochlorine pesticide residues analytical method using quick, easy, cheap, effective, rugged and safe (QuEChERS) extraction technique and Gas Chromatography coupled with Electron Capture Detector (ECD) has been developed and validated for the determination of 19 organochlorine pesticides (α- BHC, δ- BHC, β- BHC, γ- BHC, Heptachlor, Aldrin, Heptachlor Epoxide, γ- Chlordane, α- Chlordane, α- Endosulfan, 4,4 DDE, Dieldrin, Endrin, 4,4 DDD, β- Endosulfan, 4,4 DDT, Endosulfan sulphate, Methoxychlor, and Endrin Ketone) in shrimp. The method was validated by evaluating the accuracy, precision, linearity, limit of detection (LOD) and limit of quantification (LOQ). The average recoveries of the selected pesticides ranged from 84% to 106% with RSDr ≤ 14% in four fortification levels of 0.05, 0.1, 0.2 and 0.3 mg kg-1. The linearity was ≥ 0.996 for all of the selected pesticides with matrix matched calibration standards. The LOD ranged from 0.003 to 0.009 mg kg-1 and the LOQ was 0.05 mg kg-1. This method was applied successfully for the residue analysis of 40 shrimp samples collected from different regions in Bangladesh.SAARC J. Agri., 16(1): 81-93 (2018)

Metribuzin residues in lentil following postemergence application

1998 ◽  
Vol 78 (1) ◽  
pp. 167-169 ◽  
Author(s):  
Allan J. Cessna
Keyword(s):  
Gas Chromatography ◽  
Key Words ◽  
Lens Culinaris ◽  
Residue Analysis ◽  
Mature Seed ◽  
Western Canada

In a study involving two sites in western Canada, residues of the herbicide metribuzin in lentil were monitored by gas chromatography following postemergence application at 0.28 kg a.i. ha−1. On the day of spraying, initial residues in lentil green foliage were of the order of 1 mg kg−1. Metribuzin residues in the green foliage continually decreased with time to non-detectable levels (< 0.02 mg kg−1) at 42 d after application. No metribuzin residues were detected in the straw or mature seed. Key words: Metribuzin, 4-amino-6-(1,1-dimethylethyl)-3-(methylthio-1,2,4-triazin-5(4H)-one; lentil, Lens culinaris Medic., residues, residue analysis, gas chromatography

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