Quechers Method
Determination of pesticide residues in bovine milk using a modified QuEChERS method and GC-MS/MS.
... MODIFIED QuEChERS METHOD AND GC-MS/ ...multiresidue method for determination of pesticide residues in bovine milk, using a modified QuEChERS method for sample preparation, and ...
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The QuEChERS method for determination of ochratoxin a and citrinin in rice and rice bran.
... THE QuEChERS METHOD FOR DETERMINATION OF OCHRATOXIN A AND CITRININ IN RICE AND RICE BRAN. The present study was carried out to establish the optimal conditions for performing ochratoxin A (OTA) and citrinin ...
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Development and validation of the QuEChERS method for the determination of veterinary drug residues in buffalo milk and meat.
... método QuEChERS–CG-EM, mostrou-se sensível, preciso e reprodutível, sendo o limite de quantificação para cada medicamento veterinário igual ou inferior ao limite máximo de resíduo (LMR) estabelecido pelo Codex ...
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J. Braz. Chem. Soc. vol.22 número9
... The QuEChERS method of sample preparation was used for the determination of six pesticides (buprofezin, carbofuran, endosulfan-α, endosulfan-β, endosulfan sulfate and monocrotophos) in thirty three tomato ...
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Carbamato de etilo em vinhos portugueses
... Official Method for determining the substance), solid phase micro extraction (SPME) and the QuEChERS method (Quick, Easy, Cheap, Effective, Rugged, Safe), combined with gas chromatography / mass ...
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J. Braz. Chem. Soc. vol.23 número1
... methods QuEChERS (Quick, Easy, Cheap, Effective, Rugged and Safe) and by ultrasound were compared in terms of residue generation, limit of detection, limit of quantification and simultaneous recovery of ...the ...
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INSTITUTO DE QUÍMICA PROGRAMA DE PÓS GRADUAÇÃO EM QUÍMICA
... The QuEChERS method suggests several advantages in the preparation of sam- ...the method showed that it is possible to obtain satisfactory results in the determination of the imidacloprid, carbofuran ...
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An Assessment of Water Quality of Gomati River Particular Relevant To Physicochemical Characteristics, Pesticide And Heavy Metal
... The QuEChERS method was applied to sample preparation in this study, because it has several advantages over most of the traditional extraction techniques, high recoveries; very accurate results; low solvent ...
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Biomorango-Caracterização físico-química de morangos produzidos por agricultura Biológica.
... by QuEChERS method and ...quantification method, followed by GC-MS operated in SIM mode and finally using GC-MS/MS, the last ones as a confirmation ...
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Validação de método analítico empregando QuEChERS e CGEM para determinação multirresíduo de agrotóxico em goiaba
... a method for the determination of pesticides in guava was developed and validated, running the sample preparation by modified QuEChERS method, replacing the acetonitrile solvent after cleaning step ...
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QuEChERS: a modern sample preparation method for pesticide multiresidue determination in food by chromatographic methods coupled to mass spectrometry.
... PREPARATION METHOD FOR PESTICIDE MULTIRESIDUE DETERMINATION IN FOOD BY CHROMATOGRAPHIC METHODS COUPLED TO MASS ...extraction method, that involves initial extraction in acetonitrile, an extraction/partition ...
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J. Braz. Chem. Soc. vol.27 número1
... chromatographic method to determine herbicides commonly applied in the irrigated rice ...(QuEChERS) method and determination of the analytes by high performance liquid chromatography tandem mass ...
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J. Braz. Chem. Soc. vol.25 número9
... the QuEChERS method enabled the evaluation of important parameters that affect the extraction efficiency of pesticides in apple, strawberry and tomate ...
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Determination of diflubenzuron residues in milk and cattle tissues
... validate QuEChERS sample preparation for the analysis of diflubenzuron in cattle ...the method, nevertheless, during validation it was noticed that the extracts were not sufficiently clean, with ...
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J. Braz. Chem. Soc. vol.23 número2
... a method to determine the pesticides 2,4-D, diuron and fipronil in sugarcane ...The QuEChERS method was employed for extraction and the quantification was carried out by high performance liquid ...
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Pyrethroid insecticide residue in ‘Grande Naine’ banana peel and pulp during maturation
... the QuEChERS method for extraction, and Esquievel Hernández (2015), who also used LSE-LTP in the extraction stage of six agrochemicals and concluded that both extraction methods can be used for analysis of ...
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Mining method selection by integrated AHP and PROMETHEE method
... mining method selection as a multi-criteria decision- making (MCDM) problem with a finite number of alternatives that have to be ranked considering many different and conflicting ...MCDM method to solve the ...
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DESENVOLVIMENTO E VALIDAÇÃO DE MÉTODO PARA DETERMINAÇÃO DE RESÍDUOS DE AGROTÓXICOS ORGANOFOSFORADOS EM SAPOTI (Manilkara zapota) POR CG-EM EMPREGANDO QuEChERS
... amostra QuEChERS e detecção por cromatografia gasosa acoplada a espectrometria de massa para análise de oito agrotóxicos organofosforados (diclorvos, dissulfotom, etoprofos, metil paratiom, fenclorfos, ...
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A new and improved strategy combining a dispersive-solid phase extraction-based multiclass method with ultra high pressure liquid chromatography for analysis of low molecular weight polyphenols in vegetables
... methods for their identification and quantification [14–18]. In recent years, the ability of several extraction techniques, such as solid–liquid extraction (SLE) [19], enzyme-assisted extraction [20], heat extraction [21], ...
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NATURE TOURISM PLANNING USING RIVER-BASED RESOURCES AND RECREATIONAL ASSESSMENT FOR SUNGAI DINDING, PERAK, MALAYSIA
... The river was divided into segments of 1 km, measured along the centerline of the river. A large amount of information about each segment of rivers and land were collected before going to sites using topography maps, ...
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