Pesticide residue analyses in plant material by chromatographic methods: clean-up procedures and selective detectors

Tekel, Jozef; Hatrík, S

doi:10.1016/s0021-9673(96)00489-x

Cited by 106 publications

(40 citation statements)

References 72 publications

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“…In this study acetonitrile was selected for hydrophobic pesticide Picoxystrobin (logP ow = 3.6) due to not only its miscibility with the water derived from the sample, but also the relatively poor solubility of the lipophillic plant materials 17) . In addition, acetonitirle extraction could reduce co-extracts effectively compare to acetone extraction.…”

Section: Resultsmentioning

confidence: 99%

Development and Validation of Analytical Methods for Picoxystrobin Determination in Agricultural Products by GC-ECD and GC-MS

Ah¹,

Lee²,

Park³

et al. 2012

Journal of Food Hygiene and Safety

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-A simple and sensitive analytical method was developed using gas chromatography with electron capture detector (GC-ECD) and gas chromatography-mass spectrometry (GC-MS) for determination of Picoxystrobin in agricultural products (apple, hulled rice, mushroom, pepper, soybean, and mandarin). Picoxystrobin residues were extracted with acetonitrile, partitioned with saline water, and then they were cleaned up on a florisil solid-phase extraction (SPE) cartridge to obtain an extract suitable for analysis by GC-ECD and GC-MS. The method was validated using 6 agricultural product samples spiked with Picoxystrobin at different concentration levels (0.02, 0.05 and 0.5 mg/L). Average recoveries of Picoxystrobin (using each concentration three replicates) ranged 64.0~98.3% with relative standard deviations less than 10%, calibration solutions concentration in the range 0.1~5 mg/L, and limit of detection (LOD) and limit of quantification (LOQ) were 0.005 and 0.02 mg/L, respectively. The result showed that the developed analytical method is suitable for Picoxystrobin determination in agricultural products.

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Section: Resultsmentioning

confidence: 99%

Development and Validation of Analytical Methods for Picoxystrobin Determination in Agricultural Products by GC-ECD and GC-MS

Ah¹,

Lee²,

Park³

et al. 2012

Journal of Food Hygiene and Safety

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“…Matrices with fats above 2% are considered fatty. Water content is important for non fatty food products 3,4 . Fruit, vegetable and cereal samples are usually blended with organic solvent alone, solvent mixtures, water or pH-adjusted water (blending extraction).…”

Section: -Techniques Of Extraction and Cleanupmentioning

confidence: 99%

A gradual advancement of the extraction and cleanup techniques for residue analysis of pesticides in food matrices and liquid products: a review

Singh¹,

Dwevedi²,

Deopa³

et al. 2014

IOSRJESTFT

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“…17,18 Advantages of this procedure are that no emulsion is formed and elution of the analytes is performed with a relative small solvent volume. 19 This technique also enhances the availability of the analytes as it promotes the disruption of the gross architecture of the sample. [20][21][22] MSPD has been employed by some authors along with PLE as a simultaneous clean-up procedure in the extraction of pesticides from food samples.…”

Section: Introductionmentioning

confidence: 99%

Multiresidue determination of pesticides in carrots using pressurized liquid extraction and gas chromatography with mass spectrometry detector

Abad¹,

Winck²,

Silva³

et al. 2010

J. Braz. Chem. Soc.

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Neste estudo, 14 agrotóxicos (captan, clorotalonil, deltametrina, dicloran, fention, folpete, iprodiona, linurom, malationa, prometrina, procloraz, procimidona, triclorfom e trifluralina) foram usados no desenvolvimento de um método multiresíduos (MRM), utilizando extração de cenouras com líquido pressurizado (PLE). A etapa de clean-up foi realizada por dispersão da matriz em fase sólida (MSPD), sendo testados como material dispersante o Florisil, XAD-4, XAD-7 e C18. Diclorometano, acetato de etila e acetona foram empregados como solventes para PLE, a 75 ºC e 1.500 psi. As recuperações dos analitos para cenouras liofilizadas ficaram na faixa de 70 a 133%. Entretanto, os percentuais de recuperação obtidos para as cenouras úmidas não foram satisfatórios (< 70%). Os coeficientes de determinação das curvas analíticas situaram-se na faixa de 0,9821 a 0,9997; os limites de detecção (LOD) e de quantificação (LOQ) para os vários compostos investigados ficaram entre 0,0024-0,1968 mg kg -1 e entre 0,0072-0,5963 mg kg -1 , respectivamente.In this study, 14 pesticides (captan, chlorothalonil, deltamethrin, dicloran, fenthion, folpet, iprodione, linuron, malathion, prometryn, prochloraz, procymidone, trichlorphon and trifluralin) were employed for developing a multiresidue method (MRM) using pressurized liquid extraction (PLE). In situ clean-up was achieved using matrix solid phase dispersion (MSPD), where Florisil, XAD-4, XAD-7 and C18 were tested as dispersing material for carrot samples. Dichloromethane, ethyl acetate and acetone were used as solvents in a PLE unit at 75 ºC and 1,500 psi. Recovery was in the range of 70 to 133 %. Results obtained with wet carrots were not satisfactory, since most of the recovery values were below 70%. Determination coefficients of the analytical curves presented values between 0.9821 and 0.9970. Limits of detection (LOD) and quantification (LOQ) for the various components varied from 0.0024 to 0.1968 mg kg -1 , and 0.0072 to 0.5963 mg kg -1 , respectively. Keywords: multiresidue method, PLE, MSPD, carrots, GC/MS IntroductionIn the last few decades, pesticides have been used on an increasingly wider scale throughout the world. On account of the large number of active ingredients used in agricultural production, complex analytical procedures are required for the detection of a great number of possible compounds, with few number of extraction and clean-up steps. These compounds are characterized by their diversity, their different physical and chemical properties (polarity, solubility, pKa etc) and their low concentrations in real samples. 1 Some of the analytical methods aim to determine a single component (SRM) and others, more sophisticated, are capable of simultaneously determine more than one residue in a single analysis. These last ones are called pesticide multiresidue methods (MRM) and comprise a higher degree of analytical difficulty. Multiresidue methodology by definition requires determinative steps for separating analytes from one another so each one can be detected and measured ...

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Pesticide residue analyses in plant material by chromatographic methods: clean-up procedures and selective detectors

Cited by 106 publications

References 72 publications

Development and Validation of Analytical Methods for Picoxystrobin Determination in Agricultural Products by GC-ECD and GC-MS

Development and Validation of Analytical Methods for Picoxystrobin Determination in Agricultural Products by GC-ECD and GC-MS

A gradual advancement of the extraction and cleanup techniques for residue analysis of pesticides in food matrices and liquid products: a review

Multiresidue determination of pesticides in carrots using pressurized liquid extraction and gas chromatography with mass spectrometry detector

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