Application of multiresidue procedures in pesticides residues analysis

Ambrus, Á.; Thier, Hans‐Peter

doi:10.1351/pac198658071035

Cited by 40 publications

(6 citation statements)

References 7 publications

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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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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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“…These compounds are usually determined by gas chromatography, liquid chromatography, or capillary electrophoresis, depending on their polarity, volatility, and thermal stability (Hirotaka et al 2002;Carretero et al 2003;Stajnbaher and Zupancic-Kralj 2003). The introduction of new pesticides; the extension of the field of residue analysis; and the increasing requirements regarding time, cost, and safety necessitate the regular revision and improvement of the analytical methods available (Ambrus and Their 1986). The main objective of the use of multiresidue procedures is to determine as many pesticides of different chemical structures as possible in various samples of known or unknown origin in a single procedure.…”

Section: Introductionmentioning

confidence: 99%

Multiresidue analysis of neonicotinoids by solid-phase extraction technique using high-performance liquid chromatography

Mohan

Kumar

Madan

et al. 2009

Environ Monit Assess

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For routine monitoring of pesticides, a multiresidue analysis through solid-phase extraction technique and using high-performance liquid chromatography (HPLC) in cotton seed cake (CSC) has been developed. Extraction of fortified samples was carried out with aqueous acetone under vacuum. The concentrated extract was loaded onto the solid-phase extraction units, preconditioned with acetonitrile. The extraction units were then washed with hexane and finally eluted with acetonitrile. The pesticide residues were determined using a multiresidue method by reversed-phase HPLC. The average percentage recoveries were found to range between 65.47% and 110% at spiking levels of 10 to 40 mg/kg. The method developed shows a healthy rate of recovery and can successfully be utilized for the extraction and screening of neonicotinoid residues in CSC. The detection limits for imidacloprid, acetamiprid, and thiacloprid using this method were found to be 5, 10, and 20 mg/kg, respectively.

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“…Para fazer cumprir a legislação vigente, os laboratórios de controle e de execução de programas de vigilância empregam, em geral, métodos multiresíduos, que cobrem uma ampla faixa de pesticidas de distintas famílias (alguns métodos cobrem até 300 pesticidas), ou como segunda opção, utilizam métodos seletivos que se aplicam a pesticidas da mesma família ou a um único princípio ativo. Portanto, nem sempre tais métodos são suficientemente sensíveis para todos os compostos utilizados 2 . Os métodos convencionais, mesmo os mais seletivos, cos-tumam empregar um grande número de 'etapas de bancada', resultando na utilização de grandes volumes de solventes, utilizados nos procedimentos de extração e cleanup, além de um tempo de análise bastante elevado.…”

Section: Introductionunclassified

Extração por fluido supercrítico de alguns inseticidas carbamatos em amostras de batata, com determinação por HPLC/fluorescência e confirmação por HPLC/espectrometria de massas

Nunes¹,

Santos²,

Barceló³

et al. 2002

Quím. Nova

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Recebido em 21/11/00; aceito em 8/8/01 SUPERCRITICAL FLUID EXTRACTION FOR SOME CARBAMATE INSECTICIDES IN POTATOES SAMPLES, WITH HPLC/ FLUORESCENCE DETERMINATION AND HPLC/MASS SPECTROMETRY CONFIRMATION. Six supercritical fluid extraction (SFE) methods were tested, by varying the following operational parameters: CO 2 pressure, time and temperature of extraction, type and proportion of static modifier, and Hydromatrix ® /sample rate into cell. Firstly, insecticide carbamates were extracted from spiked potatoes samples (fortification level of 0,5 mg.Kg -1 ) by using SPE procedures, and then final extracts were analyzed HPLC/fluorescence. Good performance was observed with SFE methods that operated with values of temperature and CO 2 pressure of 50 o C and 350 bar, respectively. Best efficiency was obtained when it was used acetonitrile as a modifier (3% on the cell volume), and Hydromatrix ® /sample rate of 2:1. Static time was of 1 min; total extraction time was of 35 min; dynamic extraction was performed with 15 mL of CO 2 , and it was used methanol (2 mL) for the dissolution of the final residue. In such conditions, pesticide recoveries varied from 72 to 94%, depending on the analyzed compound. In higher extraction temperatures, a rapid degradation was observed for some compounds, such as aldicarb and carbaryl; presence of their metabolites was further confirmed by HPLC-APCI/MS in positive mode. Detection limits for chromatographic analysis varied from 0,2 to 1,3 ng.

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Application of multiresidue procedures in pesticides residues analysis

Abstract: Abstract

Cited by 40 publications

References 7 publications

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

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

Multiresidue analysis of neonicotinoids by solid-phase extraction technique using high-performance liquid chromatography

Extração por fluido supercrítico de alguns inseticidas carbamatos em amostras de batata, com determinação por HPLC/fluorescência e confirmação por HPLC/espectrometria de massas

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