Optimisation of a solid-phase microextraction/HPLC/Diode Array method for multiple pesticide screening in lettuce

Melo, Armindo; Aguiar, Ana; Mansilha, Catarina; Pinho, Olı́via; Ferreira, Isabel

doi:10.1016/j.foodchem.2011.07.137

Cited by 53 publications

(27 citation statements)

References 31 publications

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“…The technique is based on the partition of the analyte between the sample matrix and a stationary phase that is a fibre coated with an extracting liquid (polymer) or solid (sorbent) phase and housed in the commercial holder (Melo et al, 2012). Equilibrium is reached between the concentration of the analyte in sample and the concentration of analyte sorbed on the fiber, depending on the distribution coefficient.…”

Section: Solid Phase Microextraction Principlementioning

confidence: 99%

“…This method does not require complete removal of the analyte from the liquid matrix and can be used for a wider range of applications than other techniques such as solid phase extraction (SPE), which requires an exhaustive extraction (Kataoka et al, 2009). Owing to its convenience, almost solvent-free operation and low cost, it has gained wide applicability as an analytical technique (Melo et al, 2012).…”

Section: Solid Phase Microextraction Principlementioning

confidence: 99%

“…PA was well suited for the diphenylamine determination when coupled with gas chromatography-mass spectrometry (GC-MS) and provided good sensi tivity and dynamic range. Extraction performance of four different SPME coating, such as PDMS, PDMS/ DVB, CW/templated resin (CW/TPR) studied and PA for pesticides with log P (partition coefficient) ranged from 0.8 to 4.12 (Melo et al, 2012). CW/ TPR showed the best extraction performance for pesticides with higher value of log P (higher then two).…”

Section: Parameters Affecting Spme Performancementioning

confidence: 99%

“…Liquid desorption of analytes was performed using methanol (Ravelo-Peréz et al, 2007;Song et al, 2013), methanol in combination with water (Sagratini et al, 2007;Hu et al, 2008;Melo et al, 2012), and acetonitrile (Bagheri et al, 2012). Hu et al, 2008 performed liquid desorption using mobile phase (methanol:water, 50 : 50, v/v) as the desorption solvent for 5 min.…”

Section: Desorption Conditions (Desorption Temperature Time and Solvmentioning

confidence: 99%

See 3 more Smart Citations

Recent achievements and applications of solid – phase microextraction in pesticide residues analysis in food

Andraščíková

Hrouzková

2015

Acta Chimica Slovaca

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Abstract:The current trend in sample preparation methods is devoted to minimizing or eliminating the volume of extractive solvent. In this review, the focus on solid phase microextraction (SPME) as a solvent free sample preparation method for the isolation of pesticides residues in different food matrices is given. To achieve satisfactory extraction efficiency, selection of the fiber coating is an important step in the method development. Here, recent trends in new supporting materials and new fiber coatings development are discussed. Finally, applicability of SPME for the pesticide residues analysis in various food matrices using mainly chromatographic methods is also reviewed.

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Section: Solid Phase Microextraction Principlementioning

confidence: 99%

Section: Solid Phase Microextraction Principlementioning

confidence: 99%

Section: Parameters Affecting Spme Performancementioning

confidence: 99%

Section: Desorption Conditions (Desorption Temperature Time and Solvmentioning

confidence: 99%

See 2 more Smart Citations

Recent achievements and applications of solid – phase microextraction in pesticide residues analysis in food

Andraščíková

Hrouzková

2015

Acta Chimica Slovaca

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“…MS/MS spectrometry, 19 diode array detector). 20 The use of ultraperformance liquid chromatography in detection of pesticides has also been reported. 21 Different preconcentration methods such as solid-phase extraction (SPE), 22 solid-phase microextraction (SPME), 20 liquidphase microextraction (LPME), 17 single drop microextraction (SDME), 23 headspace solid-phase microextraction (HSPME), 14 dispersive liquid-liquid microextraction (DLLME), 24 homogeneous liquid-liquid microextraction (HLLME), 25 ultrasonic assisted headspace single drop microextraction (USA-HSDME), 16 vortex-assisted liquid-liquid microextraction (VALLME), 26 ultrasound-assisted solvent extraction followed by dispersive liquid-liquid microextraction, 27 supercritical fluid extraction combined with dispersive liquid-liquid microextraction, 18 microwave-assisted extraction-solid-phase extraction, 28 or SPE in combination with DLLME 29 have been used for the preparation of water samples containing pesticides.…”

Section: Introductionmentioning

confidence: 99%

Simultaneous determination of permethrin and deltamethrin in water samples by magnetic solid-phase extraction coupled with dispersive liquid-liquid microextraction combined with gas chromatography

et al. 2017

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In this study, new and efficient method, magnetic solid phase extraction coupled with dispersive liquid-liquid microextracton (MSPE-DLLME) combined with gas chromatography-flame ionization detector (GC-FID) was developed for the preconcentration and determination of permethrin and deltamethrin in water samples. KEYWORDSMagnetic solid-phase extraction, dispersive liquid-liquid microextraction, permethrin, deltamethrin, gas chromatography, water samples IntroductionInsecticides on the basis of pyrethrine were first introduced in the 1950s. Pyrethrines are a class of natural substances which originates from the blossom of the chrysanthemum. Pyrethrines were, and still are, used as natural insecticides against vermin in households. Nevertheless, the production of pyrethrine is expensive and the resources are limited. For these reasons synthetic pyrethroids were developed based on the basic structure of natural pyrethrines.

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Desirability functions as response in a d‐optimal design for evaluating the extraction and purification steps of six tranquillizers and an anti‐adrenergic by liquid chromatography‐tandem mass spectrometry

Rubio

Leticia

Sarabia

et al. 2015

Journal of Chemometrics

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Internal standards can be added at different stages of an analytical procedure. When they are added at the beginning of a multiresidue method and their behavior is not exactly the same as that of the analytes, the intended correction for small variations within the analytical process could not be achieved. Because of this, in the present work, the use of D-optimal designs together with desirability functions is proposed to state the experimental response under study. The overall desirability function used relates two analytical criteria: to assess a similar chemical behavior of each analyte in relation to its internal standard and to avoid a significant reduction of the absolute peak area of the internal standards. This strategy has been applied to the analysis of the effect of four factors related to the extraction and purification steps of six tranquillizers and a β-blocker from pig muscle analyzed by liquid chromatography-tandem mass spectrometry. The effect of those factors has been evaluated by means of an ad hoc D-optimal design consisting of only 11 experiments. The resulting levels of the four factors that enable to achieve the greatest overall desirability have also been compared with those obtained when either the standardized or absolute peak area has been considered as response. Differences in both the significant factors and their optimum levels have been observed. It is noticeable that the experimental effort necessary to study the effect of the factors has been reduced by more than 50% thanks to the D-optimal design.

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Optimisation of a solid-phase microextraction/HPLC/Diode Array method for multiple pesticide screening in lettuce

Cited by 53 publications

References 31 publications

Recent achievements and applications of solid – phase microextraction in pesticide residues analysis in food

Recent achievements and applications of solid – phase microextraction in pesticide residues analysis in food

Simultaneous determination of permethrin and deltamethrin in water samples by magnetic solid-phase extraction coupled with dispersive liquid-liquid microextraction combined with gas chromatography

Desirability functions as response in a d‐optimal design for evaluating the extraction and purification steps of six tranquillizers and an anti‐adrenergic by liquid chromatography‐tandem mass spectrometry

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