Results 31 to 40 of about 2,590 (173)

Solid-phase extraction combined with dispersive liquid-liquid microextraction for the analysis of glucocorticoids in environmental waters using liquid chromatography-tandem mass spectrometry

Journal of Chromatography Open, 2023
This paper illustrates an enrichment procedure based on the combination of solid phase extraction (SPE) with dispersive liquid-liquid microextraction (DLLME) for the determination of ng/L concentration levels of glucocorticoids in river water samples. In
Lorenzo Antonelli, Chiara Dal Bosco, Massimo Giuseppe De Cesaris, Nina Felli, Elena Lucci, Alessandra Gentili   +5 more
doaj   +1 more source

Mycotoxin Dietary Exposure Assessment through Fruit Juices Consumption in Children and Adult Population

Toxins, 2019
Consumption of fruit juice is becoming trendy for consumers seeking freshness and high vitamin and low caloric intake. Mycotoxigenic moulds may infect fruits during crop growth, harvest, and storage leading to mycotoxin production.
Noelia Pallarés, Dionisia Carballo, Emilia Ferrer, Mónica Fernández-Franzón, Houda Berrada   +4 more
doaj   +1 more source

Deep Eutectic Solvent Based Reversed-Phase Dispersive Liquid–Liquid Microextraction and High-Performance Liquid Chromatography for the Determination of Free Tryptophan in Cold-Pressed Oils

Molecules, 2023
A fast and straightforward reversed-phase dispersive liquid–liquid microextraction (RP-DLLME) using a deep eutectic solvent (DES) procedure to determine free tryptophan in vegetable oils was developed.
Slavica Ražić, Tamara Bakić, Aleksandra Topić, Jelena Lukić, Antonije Onjia   +4 more
doaj   +1 more source

Development of an analytical method for the determination of pesticides in tropical fruits by LC-QTOF-MS/MS after QuEChERS extraction sample cleanup and DLLME preconcentration

, 2023
In this study, QuEChERS extraction was combined with dispersive liquid-liquid microextraction (DLLME) to extract pesticides from tropical fruits for determination by a highly accurate and sensitive liquid chromatography-quadrupole time-of-flight mass ...
Sel, Sabriye, KOYUNCU, İkbal, Er, Elif Öztürk   +2 more
core   +1 more source

Dispersive Liquid-Liquid Microextraction in the Analysis of Milk and Dairy Products: A Review

Journal of Chemistry, 2016
Dispersive liquid-liquid microextraction (DLLME) is an extraction technique developed within the last decade, which involves the dispersion of fine droplets of extraction solvent in an aqueous sample. Partitioning of analytes into the extraction phase is
Andrew Quigley, Wayne Cummins, Damian Connolly   +2 more
doaj   +1 more source

Ανάπτυξη, βελτιστοποίηση και εφαρμογή της υγρής υγρής μικροεκχύλισης διασποράς (DLLME και DLLME-SFO) για τον προσδιορισμό επιλεγμένων ομάδων χημικών προϊόντων προσωπικής φροντίδας, UV filters, PCMS και PAES σε συνδυασμό με χημειομετρικές μεθόδους

, 2013
Traditional methods for sample preparation including liquid-liquid extraction, soxhlet extraction, chromatography, distillation, and absorption, usually suffer from the disadvantages of time-consuming, large amounts of toxic organic solvent to be used ...
Παναγιώτου, Αικατερίνη, Panagiotou, Katerina   +1 more
core   +1 more source

Solid-phase extraction coupled with dispersive liquid–liquid microextraction for determination of enrofloxacin in chicken meat [PDF]

شیمی کاربردی روز, 2016
Solid-phase extraction combined with dispersive liquid–liquid microextraction has been developed as a new approach for the extraction of enrofloxacin in chicken meat prior to high performance liquid chromatography with UV detection.
Mohammad Rezaee, Faezeh Khalilian
doaj   +1 more source

Mycotoxin Analysis of Human Urine by LC-MS/MS: A Comparative Extraction Study

Toxins, 2017
The lower mycotoxin levels detected in urine make the development of sensitive and accurate analytical methods essential. Three extraction methods, namely salting-out liquid–liquid extraction (SALLE), miniQuEChERS (quick, easy, cheap, effective, rugged ...
Laura Escrivá, Lara Manyes, Guillermina Font, Houda Berrada   +3 more
doaj   +1 more source

Solvent extraction methods towards efficient recognition of organophosphorus pesticides: Recent progress and analytical challenges

Talanta Open
Dispersive Liquid–Liquid Microextraction (DLLME) has evolved significantly by integrating physical assistance methods to enhance extraction efficiency while minimizing the use of organic solvents and disperser agents.
Marzieh Fallahi Nezhad, Amin Foroozandeh, Hossein Salar Amoli, Mohammad Hasanzadeh   +3 more
doaj   +1 more source

Wildfire Ash Alters Freshwater Crustacean Behavior: Disentangling the Contributions of Suspended Macroparticles and Ash‐Induced Alkalinization

Environmental Toxicology, EarlyView.
ABSTRACT Climate change and anthropogenic ignitions are intensifying wildfire frequency worldwide, elevating the risk of freshwater contamination by ash. In water, dissolved ash releases ions and other toxic constituents that increase pH and alter physicochemical conditions, while suspended ash particles may impose mechanical stress, disrupt behavior ...
Pétterson B. Pereira‐Silva, Diogo R. Pacheco, Gustavo Kirsch, Ronnilda M. G. Araujo, Bianca V. C. Oscar, William G. Matias, Sandro Santos, Bruno R. S. Figueiredo   +7 more
wiley   +1 more source