Application of HPLC-DAD and TLC-DAD after SPE to the Quantitative Analysis of Pesticides in Water Samples

Tuzimski, Tomasz; Sobczyński, Jan

doi:10.1080/10826070902854391

Cited by 24 publications

(6 citation statements)

References 12 publications

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“…The extraction capabilities of the S-PTh dendrimer were applied to the determination of Clofentezine in milk and T A B L E 1 Some analytical data obtained for microextraction of Clofentezine using the MEPS method and comparison of the developed method with other method (SPE-HPLC-DAD [24], LC-MS/MS [25], HPLC-DAD [26] Ref. [24] Ref. [25] Ref.…”

Section: Quantitative Evaluation and Real Sample Analysismentioning

confidence: 99%

Nanostructured star‐shaped polythiophene dendrimer as a highly efficient sorbent for microextraction in packed syringe for HPLC analysis of the Clofentezine in milk and juice samples

Abolghasemi

Taheri

Jaymand

et al. 2018

Separation Science Plus

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A nanostructured star‐shaped polythiophene dendrimer was prepared and used as an extraction medium for microextraction in packed syringe for clofentezine pesticide in milk and juice samples in combination with high‐performance liquid chromatography. The thermal behaviors, optical properties, and morphologies of the synthesized samples were investigated by thermogravimetric analysis, ultraviolet–visible spectroscopy and field‐emission scanning electron microscopy, respectively. A one‐at‐a‐time strategy was applied for optimizing the important extraction parameters such as the nature of desorption solvent, elution volume, pH, number of extraction cycles and sample volume. Under the optimized conditions, a detection limit of 2 × 10−4 μg mL−1 and a linear calibration curve with an R2 of 0.9983 were obtained for clofentezine. The average recovery of the analyte for juice and milk samples were 97.6 and 93% with relative standard deviation of 3.92 and 2.76%, respectively, for five replicates. The method was successfully applied to the high‐performance liquid chromatography determination of clofentezine in milk and juice samples.

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Section: Quantitative Evaluation and Real Sample Analysismentioning

confidence: 99%

Nanostructured star‐shaped polythiophene dendrimer as a highly efficient sorbent for microextraction in packed syringe for HPLC analysis of the Clofentezine in milk and juice samples

Abolghasemi

Taheri

Jaymand

et al. 2018

Separation Science Plus

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“…The limit of detection (LOD) was between 0.04 and 0.23 mg/spot (TLC-DAD) and between 0.02 and 0.45 mg ml À1 (HPLC-DAD) (Tuzimski 2008a). Application of SPE and HPLC-DAD and/or TLC-DAD to the determination of pesticides in water samples from lakes from Łęczyńsko-Włodawskie Lake District (South-Eastern Poland) was also described (Tuzimski 2008b(Tuzimski , 2009aTuzimski and Sobczyński 2009). Dichloromethane eluates were analyzed by TLC-DAD (Fig.…”

Section: Thin Layer Chromatography With Diode Array Scanning (Tlc-dad)mentioning

confidence: 99%

Basic Principles of Planar Chromatography and Its Potential for Hyphenated Techniques

Tuzimski

2010

High-Performance Thin-Layer Chromatography (HPTLC)

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Sample preparation, detection, identification, and quantitative determination of biomolecules are presented in this chapter. Advantages of planar chromatography and the basic principles (chambers, sample application, and chromatogram development) are also described. Rapid detection of biomolecules plays a strategical role in their investigation. Hyphenated techniques such as planar chromatography coupled to UV diode array detection and to mass spectrometry provide on-line extensive structural information on the metabolites prior to their isolation. In this chapter, the combination of thin-layer chromatography (TLC) with biomolecules specific detection by diode array scanning (DAD), mass spectrometry (MS), nuclear magnetic resonance (NMR), and Fourier transform infrared spectroscopy (TLC-FTIR) is discussed. In the last part of the chapter, the reader will gain useful information about a recent method of planar chromatography -multidimensional planar chromatography (MD-PC) and information on application of different modes of multidimensional planar chromatography and combination of this technique with diode array detection (MD-PC-DAD) and HPLC-DAD for separation, detection, and qualitative and quantitative determination of biomolecules. Planar chromatography as a pilot technique for HPLC is also described.Biomolecules are widespread throughout the world. It is an organic molecule produced by a living organism, including large polymeric molecules such as proteins, polysaccharides, and nucleic acids as well as small molecules such as a primary metabolites, secondary metabolites, and natural products. Many sample-preparation techniques are used in biomolecule analysis; the method selected depends on the

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“…Solid-phase extraction is one of the popular methods to extract=pre-concentrate the trace level analytes of pesticides from water samples, as it reduces the consumption of a large amount of hazardous chemicals, labor, and cost, compared to other techniques. [2,[5][6][7] Different materials, such as C18 bonded silica, graphitized carbon, ionic exchange resins, or polymeric materials, which are commercially available in cartridges and disk systems, are the most extensively used SPE sorbents for preconcentration and cleanup of water samples. [8][9][10] As commercially available disposable cartridges are difficult to afford in developing countries, it is desirable to test home-made sorbents, in particular, to reduce the cost of the analysis and to broaden the range of analyzable pesticides.…”

Section: Introductionmentioning

confidence: 99%

“…The detection of the pesticide residues with chromatographic techniques in real samples is not possible without pre-cleanup=pre-concentration; thus, the residual samples have to be concentrated prior to analysis. [1][2][3][4][5][6][7] Different techniques are used for the extraction=preconcentration of pesticide residues from aqueous matrices. Solid-phase extraction is one of the popular methods to extract=pre-concentrate the trace level analytes of pesticides from water samples, as it reduces the consumption of a large amount of hazardous chemicals, labor, and cost, compared to other techniques.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Application of a Bi-Functional Sorbent Derived From Ethylacrylate-Divinylbenzene Copolymer for the Solid-Phase Extraction of Pesticides From Water

Jan

Waqar

Ali

et al. 2012

Journal of Liquid Chromatography & Related Technologies

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& A bi-functional sorbent derived from ethylacrylate-divinylbenzene copolymer was synthesized in beaded form by a suspension polymerization technique. Unlike conventional alkaline hydrolysis of the copolymer, a novel hydrolysis technique was used in this study and the copolymer was treated with concentrated sulfuric acid. More than 70% of the ester groups were converted into -COOH groups and about 60% of the aromatic rings in the copolymer were introduced by -SO 3 H groups. The synthesized copolymer was used as a solid-phase material for extraction of pesticides from water samples. Recoveries of five pesticides, namely, chlorfenvinfos, endosulfan sulfate, chlorpyrifos, fenvalerate, and diuron, were compared to those using commercially available silica-based C-18 sorbent. The recoveries obtained with the synthesized sorbent were low compared to commercial C18 cartridge. However, the synthesized polymer is cost effective and can be reused. Three extraction cycles did not affect the % recoveries of the studied pesticides. The % recoveries, obtained for chlorfenvinphos, diuron, endosulfan sulfate, chlropyrifos, and fenvelerate, ranged from 28 to 62%; linear range, 0.035 to 22 mg L À1 ; LOD, 37 to118 lg L À1 ; and LOQ, 123 to395 lg L À1 .

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Application of HPLC-DAD and TLC-DAD after SPE to the Quantitative Analysis of Pesticides in Water Samples

Cited by 24 publications

References 12 publications

Nanostructured star‐shaped polythiophene dendrimer as a highly efficient sorbent for microextraction in packed syringe for HPLC analysis of the Clofentezine in milk and juice samples

Nanostructured star‐shaped polythiophene dendrimer as a highly efficient sorbent for microextraction in packed syringe for HPLC analysis of the Clofentezine in milk and juice samples

Basic Principles of Planar Chromatography and Its Potential for Hyphenated Techniques

Synthesis and Application of a Bi-Functional Sorbent Derived From Ethylacrylate-Divinylbenzene Copolymer for the Solid-Phase Extraction of Pesticides From Water

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