Articles with "modified quechers" as a keyword



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Modified QuEChERS method for phenolic compounds determination in mustard greens (Brassica juncea) using UHPLC-MS/MS

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Published in 2020 at "Arabian Journal of Chemistry"

DOI: 10.1016/j.arabjc.2019.10.012

Abstract: Abstract A modified QuEChERS method (Quick, Easy, Cheap, Effective, Rugged, and Safe) for the determination of fifteen phenolic compounds in mustard greens (Brassica juncea) using ultra-high-performance liquid chromatography coupled to tandem mass spectrometry (UHPLC-MS/MS) analysis… read more here.

Keywords: greens brassica; quechers method; modified quechers; brassica juncea ... See more keywords
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Simultaneous determination of neonicotinoids and fipronils in tea using a modified QuEChERS method and liquid chromatography-high resolution mass spectrometry.

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Published in 2020 at "Food chemistry"

DOI: 10.1016/j.foodchem.2020.127159

Abstract: The widespread use of neonicotinoids (NEOs) and fipronils (FIPs) as insecticides in modern agriculture has been widely investigated because of their adverse effects on human health. This study aimed to develop an accurate quantitative approach… read more here.

Keywords: quechers method; modified quechers; tea using; tea ... See more keywords
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Highly-selective complex matrices removal via a modified QuEChERS for determination of triazine herbicide residues and risk assessment in bivalves.

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Published in 2021 at "Food chemistry"

DOI: 10.1016/j.foodchem.2021.129030

Abstract: A modified quick, easy, cheap, effective, rugged, and safe (QuEChERs) method for determining triazine herbicide residues in bivalves (Mussels, Scallops, Cockles) was developed. The use of molecularly imprinted polymers (MIPs) as a selective purification material… read more here.

Keywords: highly selective; herbicide; herbicide residues; selective complex ... See more keywords
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Evaluation of LC-MS/MS methodology for determination of 179 multi-class pesticides in cabbage and rice by modified QuEChERS extraction

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Published in 2020 at "Food Control"

DOI: 10.1016/j.foodcont.2020.107693

Abstract: Abstract A method using modified QuEChERS (Quick, Easy, Cheap, Effective, Rugged, Safe) without clean-up step based on the sample dilution approach followed by the liquid chromatography coupled with the tandem mass spectrometry (LC-MS/MS) has been… read more here.

Keywords: cabbage rice; methodology; modified quechers; determination 179 ... See more keywords
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Determination of desmedipham residue in 21 foods by HPLC-MS/MS combined with a modified QuEChERS and mixed-mode SPE clean-up method

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Published in 2021 at "Journal of Food Composition and Analysis"

DOI: 10.1016/j.jfca.2021.104004

Abstract: Abstract The establishment of a qualitative and quantitative method to determine the pesticide residues in agricultural products is an essential tool to ensure food safety and protect consumers against potential health risks. In this study,… read more here.

Keywords: determination desmedipham; method; residue foods; modified quechers ... See more keywords
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Multiresidue analysis of 15 antibiotics in honey using modified QuEChERS and high performance liquid chromatography-tandem mass spectrometry

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Published in 2021 at "Journal of Food Composition and Analysis"

DOI: 10.1016/j.jfca.2021.104120

Abstract: Abstract Sugars, organic acids, and lipids generally cause strong matrix effects, posing a challenge in the analysis of trace substances in honey. In this study, method involving a modified QuEChERS (Quick, Easy, Cheap, Effective, Rugged,… read more here.

Keywords: performance liquid; honey; modified quechers; liquid chromatography ... See more keywords
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Simultaneous Extraction of Pesticides and Polycyclic Aromatic Hydrocarbons in Brazilian Cachaça Using a Modified QuEChERS Method Followed by Gas Chromatography Coupled to Tandem Mass Spectrometry Quantification.

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Published in 2019 at "Journal of agricultural and food chemistry"

DOI: 10.1021/acs.jafc.8b04682

Abstract: A modified QuEChERS method was optimized for simultaneous extraction of 93 pesticides and 6 polycyclic aromatic hydrocarbons (PAHs) in cachaça. The procedure employed 20 mL of sample, 10 mL of dichloromethane, 1 g of NaCl,… read more here.

Keywords: simultaneous extraction; quechers method; pesticides polycyclic; modified quechers ... See more keywords
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Development and Validation of a Modified QuEChERS Method for Simultaneous Analysis of 250 Flavor Constituents in Tobacco by Gas Chromatography Tandem Mass Spectrometry.

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Published in 2022 at "Journal of AOAC International"

DOI: 10.1093/jaoacint/qsac105

Abstract: BACKGROUND Flavor constituents play an important role in the flavor characteristics of tobacco leaves and cigarettes. Sensitive, selective and high-throughput multi-analyte analytical methods are needed to satisfy the demand for analyzing trace level flavor constituents… read more here.

Keywords: modified quechers; flavor constituents; analysis; constituents tobacco ... See more keywords
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Determination of Residual Triflumezopyrim Insecticide in Agricultural Products through a Modified QuEChERS Method

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Published in 2021 at "Foods"

DOI: 10.3390/foods10092090

Abstract: A rapid and simple analytical method for triflumezopyrim, a new class of mesoionic insecticides and commercialized molecules from DuPont, was developed with a modified QuEChERS method. The pH adjustment was used to improve the extraction… read more here.

Keywords: quechers method; residual triflumezopyrim; method; modified quechers ... See more keywords
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Rapid Analysis of Residues of 186 Pesticides in Hawk Tea Using Modified QuEChERS Coupled with Gas Chromatography Tandem Mass Spectrometry

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Published in 2022 at "International Journal of Environmental Research and Public Health"

DOI: 10.3390/ijerph191912639

Abstract: In this work, the QuEChERS method was modified and evaluated for the determination of 186 pesticides from caffeine-free and fatty hawk tea prior to their gas chromatography tandem mass spectrometry analysis for the first time.… read more here.

Keywords: gas chromatography; 186 pesticides; modified quechers; hawk tea ... See more keywords
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Validation of a Modified QuEChERS Method for the Determination of Selected Organochlorine Compounds in Honey

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Published in 2023 at "Molecules"

DOI: 10.3390/molecules28020842

Abstract: Honey is considered to be a health-promoting food product. Therefore, it is assumed that it should be free of contaminants. Although the use of organochlorine pesticides (OCPs) was banned a few decades ago in developed… read more here.

Keywords: ddt dde; validation modified; honey; selected organochlorine ... See more keywords