Determination of organophosphorus pesticides in bovine tissue by an on-line coupled matrix solid-phase dispersion–solid phase extraction–high performance liquid chromatography with diode array detection method

Gutiérrez-Valencia, Tania Milena; Llasera, Martha Patricia García de

doi:10.1016/j.chroma.2011.08.011

Cited by 55 publications

(11 citation statements)

References 35 publications

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“…Later, in 2017, Llasera and Gutiérrez-Valencia developed an automated solid-phase dispersion matrix system (MSPD), online coupled to HPLC-FLD, for the determination of four PAHs in bovine tissues [135]. For MSPD, authors employed a previously described complex flow system [136] that included five different mobile phases; a solvent selector valve; two extra LC pumps; the MSPD cartridge; two 6-port switching valves; a dynamic mixing chamber; a C18-bonded silica precolumn, all of that coupled to the chromatographic injection switching valve and followed by the guard and the analytical columns. With this complex online system, authors reached a LOQ of 0.04 ng/g, with recoveries between 96.4% and 98.8%, and good linearity and precision.…”

Section: Modern Automated Spme Of Food and Beverages Samplesmentioning

confidence: 99%

Modern automated microextraction procedures for bioanalytical, environmental, and food analyses

Sartore

Medina

Bocelli

et al. 2023

J of Separation Science

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Sample preparation frequently is considered the most critical stage of the analytical workflow. It affects the analytical throughput and costs; moreover, it is the primary source of error and possible sample contamination. To increase efficiency, productivity, and reliability, while minimizing costs and environmental impacts, miniaturization and automation of sample preparation are necessary. Nowadays, several types of liquid‐phase and solid‐phase microextractions are available, as well as different automatization strategies. Thus, this review summarizes recent developments in automated microextractions coupled with liquid chromatography, from 2016 to 2022. Therefore, outstanding technologies and their main outcomes, as well as miniaturization and automation of sample preparation, are critically analyzed. Focus is given to main microextraction automation strategies, such as flow techniques, robotic systems, and column‐switching approaches, reviewing their applications to the determination of small organic molecules in biological, environmental, and food/beverage samples.

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Section: Modern Automated Spme Of Food and Beverages Samplesmentioning

confidence: 99%

Modern automated microextraction procedures for bioanalytical, environmental, and food analyses

Sartore

Medina

Bocelli

et al. 2023

J of Separation Science

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“…As presented in Fig. B, for extraction and fractionation of solid (and sometimes also semisolid and very viscous food samples), the following are used: (i) matrix solid‐phase dispersion , (ii) pressurized liquid extraction , (iii) super‐heated water extraction (SHWE ), (iv) SFE , (v) microwave and ultrasound‐assisted SPE , and (vi) magnetic SPE . The MSPD involves the process of complete sample disruption by mechanical forces and the interactions of the sample matrix with the solid support surface.…”

Section: Sample Preparation In Metabolomicsmentioning

confidence: 99%

“…The MSPD involves the process of complete sample disruption by mechanical forces and the interactions of the sample matrix with the solid support surface. ODS was first used for this purpose, but other materials such as underivatized silicates or other organic or inorganic solids were now also applied . The pressurized liquid extraction (or “pressurized fluid extraction”) employs solvents at both elevated temperatures and pressures.…”

Section: Sample Preparation In Metabolomicsmentioning

confidence: 99%

Sample preparation in foodomic analyses

2018

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Representative sampling and adequate sample preparation are key factors for successful performance of further steps in foodomic analyses, as well as for correct data interpretation. Incorrect sampling and improper sample preparation can be sources of severe bias in foodomic analyses. It is well known that both wrong sampling and sample treatment cannot be corrected anymore. These, in the past frequently neglected facts, are now taken into consideration, and the progress in sampling and sample preparation in foodomics is reviewed here. We report the use of highly sophisticated instruments for both high-performance and high-throughput analyses, as well as miniaturization and the use of laboratory robotics in metabolomics, proteomics, peptidomics, and genomics.

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“…Therefore, it is essential to provide an efficient method for quantifying harmful pollutants such as pesticides residues in honey samples to warrant consumers' safety. 3,4 Several chromatographic methods such as highperformance liquid chromatography (HPLC), [5][6][7] liquid chromatography-tandem mass spectrometry (LC-MS-MS), 8 and gas chromatography-mass spectrometry (GC-MS) 1,9,10 have been used for OPPs analysis in different samples. Although these methods are sensitive and selective, another stage named as sample preparation is needed before instrumental analysis because of trace levels of pesticides present in the real samples.…”

Section: Introductionmentioning

confidence: 99%

Control of Organophosphorus Pesticides Residues in Honey Samples Using a Miniaturized Tandem Preconcentration Technique Coupled with High Performance Liquid Chromatography

et al. 2020

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Background:In the present work, a miniaturized sample preparation method based on combination of dispersive solid phase extraction and temperature-induced homogenous liquidliquid microextraction has been proposed for the extraction and preconcentration of some organophosphorus pesticides (parathion-methyl, triazophos, parathion, diazinon, and phoxim) from honey samples prior to their analysis by high performance liquid chromatographyultraviolet detection. Methods: In this method, initially the analytes were adsorbed onto a sorbent (C 18 ) and then desorbed by the use of cyclohexyl amine as an eluent. In the next step, the eluent was mixed with water thermostated at 0 °C to obtain a homogenous solution. By increasing the temperature, the solubility of cyclohexyl amine in water was decreased and led to formation of dispersed fine droplets in the whole of solution. These droplets go up through the solution and collected on top of the solution. Finally, an aliquot of the organic phase was sucked in a microsyringe and injected into the separation system for analysis. Results: Under the optimum experimental conditions, limits of detection and quantification were calculated to be in the ranges of 0.90-1.75 and 3.0-5.8 ng g -1 in honey samples, respectively. Enrichment factors and extraction recoveries were in the ranges of 148-183 and 59-73%, respectively. The relative standard deviations varied from 2-4% and 4-5% for intra-(n = 6) and inter-day (n = 4) precisions, respectively. Conclusion: The suggested approach was satisfactorily utilized to the analysis of 21 honey samples. The proposed miniaturized tandem sample pretreatment method enhanced the sensitivity of the instrumental analysis.

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Determination of organophosphorus pesticides in bovine tissue by an on-line coupled matrix solid-phase dispersion–solid phase extraction–high performance liquid chromatography with diode array detection method

Cited by 55 publications

References 35 publications

Modern automated microextraction procedures for bioanalytical, environmental, and food analyses

Modern automated microextraction procedures for bioanalytical, environmental, and food analyses

Sample preparation in foodomic analyses

Control of Organophosphorus Pesticides Residues in Honey Samples Using a Miniaturized Tandem Preconcentration Technique Coupled with High Performance Liquid Chromatography

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