Miniaturized automated matrix solid-phase dispersion extraction of pesticides in fruit followed by gas chromatographic–mass spectrometric analysis

Kristenson, E. Maria; Haverkate, Esther G.J; Slooten, Cees J.; Ramos, Lourdes; Vreuls, René J. J.; Brinkman, U.A.Th.

doi:10.1016/s0021-9673(01)00677-x

Cited by 78 publications

(21 citation statements)

References 18 publications

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“…15 Esta técnica se baseia na dispersão da amostra sólida ou semi-sólida em um adsorvente, geralmente florisil 16,17 ou octadecil (C-18). 18,19 Além destes adsorventes, têm sido utilizados também terra de diatomáceas, 20 sílica 21 e octil (C-8) 22 na extração de agrotóxicos em alimentos.…”

Section: Figura 1 Estrutura Da Deltametrina Cipermetrina λ-Cialotiunclassified

Análise de resíduos de agrotóxicos em tomates empregando dispersão da matriz em fase sólida (DMFS) e cromatografia gasosa

Pinho¹,

Neves²,

Queiroz³

2009

Quím. Nova

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Section: Figura 1 Estrutura Da Deltametrina Cipermetrina λ-Cialotiunclassified

Análise de resíduos de agrotóxicos em tomates empregando dispersão da matriz em fase sólida (DMFS) e cromatografia gasosa

Pinho¹,

Neves²,

Queiroz³

2009

Quím. Nova

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“…Most applications of MSPD for pesticides analysis in food employ a reversed-phase material, particularly C18 and C8 (Navarro, 2002;Kristenson, 2001;Blasco, 2002) and sorbent Florisil (Viana, 1996). The sample preparation procedure should include chromatographic analysis and detection mainly in LOQs and selectivity.…”

Section: Introductionmentioning

confidence: 99%

MSPD as sample preparation method for determination of selected pesticide residues in apples

Purdešová¹,

Dömötörová

2017

Acta Chimica Slovaca

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A method for extraction and fast gas chromatographic (GC) determination of twenty pesticide residues of different volatility and polarity at ultratrace concentration level in apples is presented. Apples as representatives of non-fatty food were chosen as a matrix; they are also a common raw material for baby food production. Under fast GC conditions employing a mass spectrometric detector (MSD), several parameters of the MSPD procedure were optimised. Samples were homogenised with sorbent Florisil, pesticides were eluted with the optimised volume of etylacetate. After solvent evaporation to dryness, reconstitution of the rest to toluene follow and the final extract was injected. Recoveries obtained at three selected concentration levels were determined. The optimised procedure led to recoveries ≥ 90 % for the majority of the studied pesticides and the limits of quantification (LOQs) < 5 µg.kg -1 . Repeatability of gas chromatography-mass spectrometry (GC-MS) measurements of the matrix matched standards, expressed as the relative standard deviation (RSD [ %]), was in most cases acceptable for ultratrace concentration levels of pesticide residues.

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“…A number of solvents have been used for multiresidue extraction; the most common include acetone, 8 ethyl acetate, 9 acetonitrile, 10 dichloromethane, 7 hexane 11 and methanol. 12 Sample clean-up techniques include liquid-liquid partitioning using various solvents, 13 gel permeation chromatography, 14 solidphase extraction, 15 matrix solid-phase dispersion (MSPD), 16 supercritical fluid extraction, 17 solid-phase microextraction 18 and single-drop microextraction. 19 The requirement for clean up will strongly depend on the selectivity and sensitivity of the detection techniques employed in the determination of pesticide residues.…”

Section: Introductionmentioning

confidence: 99%

Multiresidue Analysis of Pesticides in Fruits and Vegetables Using Solid-Phase Extraction and Gas Chromatographic Methods

2008

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Experimental Reagents and solutionsAll solvents used were of HPLC grade. Methanol, acetone, ethyl acetate, acetonitrile, hexane and diethyl ether were purchased from Fischer Scientific, Loughborough, UK. Deionized water and hexane were filtered through a 0.45-μm membrane filter purchased from Millipore. Anhydrous sodium sulfate was purchased from J. T. Baker, NJ, USA.The use of high-purity reagents and solvents helps to minimize interference problems. The pesticide standards (acephate, dimethoate, malathion, diazinon, quinalphos, chlorpyrifos, profenofos, α-endosulfan, b-endosulfan, chlorothalonil and carbaryl) were 90.0 -99.5% pure and purchased from AccuStandard Inc. New Haven, CT, USA.All pesticides were dissolved in hexane at 1000 mg/kg concentrations as stock solutions. A mixture containing 0.01 -0.5 mg/kg of each pesticide in hexane was prepared from the stock solutions and as the working solution. In order to avoid any influence on the results from the possible degradation of pesticides, the working solution was freshly prepared every day.1-Chloro-4-fluorobenzene (1 mg/kg) was used as an internal standard to compensate for any sample and injection volume changes, and was added to the vial prior to GC analysis.

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Miniaturized automated matrix solid-phase dispersion extraction of pesticides in fruit followed by gas chromatographic–mass spectrometric analysis

Cited by 78 publications

References 18 publications

Análise de resíduos de agrotóxicos em tomates empregando dispersão da matriz em fase sólida (DMFS) e cromatografia gasosa

Análise de resíduos de agrotóxicos em tomates empregando dispersão da matriz em fase sólida (DMFS) e cromatografia gasosa

MSPD as sample preparation method for determination of selected pesticide residues in apples

Multiresidue Analysis of Pesticides in Fruits and Vegetables Using Solid-Phase Extraction and Gas Chromatographic Methods

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