Search results for "Assisted solvent extraction"

showing 3 items of 3 documents

Pressurized liquid extraction of organic contaminants in environmental and food samples

2015

Pressurized liquid extraction (PLE) is an automated technique that uses elevated temperature and pressure to achieve exhaustive extraction from solid matrices, so reducing solvent consumption and enhancing sample throughput when compared with traditional procedures. Hence, it can be considered an environment-friendly technique, generating small volumes of waste and reducing costs and time. This review focuses on application of this green technique to the analysis of organic contaminants in food and environmental matrices for monitoring purposes. We examine fundamentals and key aspects of the development of a PLE method, including pressurized hot-water extraction, together with some relevant…

ChromatographyPressurized fluid extractionChemistrybusiness.industryAssisted solvent extractionExtraction (chemistry)Supercritical fluid extractionContaminationEnvironmentAutomated techniqueSupercritical fluid extractionAnalytical ChemistryPressurized hot-water extractionIn-cell clean-upTemperature and pressureSoxhlet extractionFoodPressurized liquid extractionMicrowave-assisted extractionSolid phase extractionProcess engineeringbusinessSpectroscopyTrAC - Trends in Analytical Chemistry 71: 55-64 (2015)
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Determination of Glyphosate and AMPA in Food Samples Using Membrane Extraction Technique for Analytes Preconcentration

2021

The method for determining glyphosate (NPG) and its metabolite AMPA (aminomethyl phosphonic acid) in solid food samples using UAE-SLM-HPLC–PDA technique was developed. Firstly, ultrasonic-assisted solvent extraction (UAE) and protein precipitation step were used for the analyte isolation. Then, the supernatant was evaporated to dryness and redissolved in distilled water (100 mL). The obtained solution was alkalized to pH 11 (with 1 M NaOH) and used directly as donor phase in SLM (supported liquid membrane) extraction. The SLM extraction was performed using 2 M NaCl (5 mL) as an acceptor phase. The flow rate of both phases (donor and acceptor) was set at 0.2 mL/min. The membrane extraction t…

glyphosate and AMPAChemical engineeringsupported liquid membrane extractionultrasonic-assisted solvent extractionfood samplesChemical technologyProcess Chemistry and Technologyglyphosate and AMPA; supported liquid membrane extraction; ultrasonic-assisted solvent extraction; food samplesChemical Engineering (miscellaneous)TP155-156Filtration and SeparationTP1-1185ArticleMembranes; Volume 12; Issue 1; Pages: 20
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Determination of Glyphosate and AMPA in Food Samples Using Membrane Extraction Technique for Analytes Preconcentration

2022

The method for determining glyphosate (NPG) and its metabolite AMPA (aminomethyl phosphonic acid) in solid food samples using UAE-SLM-HPLC–PDA technique was developed. Firstly, ultrasonic-assisted solvent extraction (UAE) and protein precipitation step were used for the analyte isolation. Then, the supernatant was evaporated to dryness and redissolved in distilled water (100 mL). The obtained solution was alkalized to pH 11 (with 1 M NaOH) and used directly as donor phase in SLM (supported liquid membrane) extraction. The SLM extraction was performed using 2 M NaCl (5 mL) as an acceptor phase. The flow rate of both phases (donor and acceptor) was set at 0.2 mL/min. The membrane extraction t…

glyphosate and AMPAsupported liquid membrane extractionultrasonic-assisted solvent extractionfood samplesMembranes
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