Results 61 to 70 of about 4,299 (226)

A Natural Monoterpene Enol for Dispersive Liquid–Liquid Microextraction Based on Solidification of Floating Organic Droplets for Determination of Benzophenone Compounds in Water Samples

open access: yesSeparations, 2022
In the current study, an effective and simple procedure of extraction for the four benzophenone compounds from water samples was achieved by dispersive liquid–liquid microextraction (DLLME) based on the solidification of floating organic droplets (SFO ...
Xian Zhang   +7 more
doaj   +1 more source

Chromatography of beer [PDF]

open access: yes, 2013
The objectives of the review are the collection, concise description and evaluation of the various chromatographic techniques used for the separation and quantitative determination of macro- and microcomponents present in ...
Cserháti, Tibor, Szőgyi, Mária
core  

Dispersive liquid–liquid microextraction for metals enrichment: A useful strategy for improving sensitivity of laser-induced breakdown spectroscopy in liquid samples analysis [PDF]

open access: yes, 2015
A rapid and efficient Dispersive Liquid–Liquid Microextraction (DLLME) followed by Laser-Induced Breakdown Spectroscopy detection (LIBS) was evaluated for simultaneous determination of Cr, Cu, Mn, Ni and Zn in water samples.
Aguirre Pastor, Miguel Ángel   +3 more
core   +2 more sources

Ultrasound‐Assisted Extraction Using a 3D‐Printed Device Functionalized With SPE Sorbent for UHPLC‐DAD Analysis of Pesticide Residues in Honey

open access: yesJournal of Food Science, Volume 91, Issue 1, January 2026.
ABSTRACT The presence of pesticide residues in honey represents a significant concern for food safety and public health, underscoring the need for advanced analytical techniques capable of ensuring accurate detection and effective food control. In this study, a stereolithographically 3D‐printed device coated with the solid‐phase extraction (SPE ...
Daniela Lupu   +2 more
wiley   +1 more source

Rapid analysis of triclosan in water samples using an in-tube ultrasonication assisted emulsification microextraction coupled with gas chromatography-electron capture detection [PDF]

open access: yes, 2013
In this study, a new in-tube based ultrasound-assisted emulsification microextraction (IT-USAEME) technique coupled with gas chromatography-micro-electron capture detection (GC-μECD) was developed for the efficient and rapid analysis of triclosan in ...
Abilasha Ramkumara   +4 more
core   +1 more source

Recent Advances in Reactive Microdroplets for Clean Water and Energy

open access: yesAdvanced Materials, Volume 37, Issue 51, December 23, 2025.
Reactive microdroplets enable precise and sustainable chemistry at small scales. This review explores their role as confined reactors and dynamic interfaces for synthesizing functional materials, fuels, and microdevices. It offers a critical perspective on how droplet‐based platforms can drive next‐generation technologies in clean energy, environmental
Qiuyun Lu   +4 more
wiley   +1 more source

Dispersive liquid-liquid microextraction-gas chromatography-mass spectrometric determination of polycylic aromatic hydrocarbons in water [PDF]

open access: yes, 2011
In this work, a sample preparation method based on dispersive liquid-liquid microextraction (DLLME) coupled with gas chromatography-mass spectrometry (GC-MS) was developed for the extraction of polycyclic aromatic hydrocarbons (PAHs), namely phenanthrene
Sharef A., Sarra Younes
core  

Direct Ionic Liquid Extractant Injection for Volatile Chemical Analysis - A Gas Chromatography Sampling Technique [PDF]

open access: yes, 2015
A green sampling approach by direct injection of ionic liquid (IL) solvent containing a variety of analytes using programmable temperature vaporisation (PTV) injection with gas chromatography (GC) is presented.
Chin, S.-T.   +5 more
core   +1 more source

Simultaneous Chloramphenicol and Florfenicol Determination by A Validated DLLME-HPLC-UV Method in Pasteurized Milk.

open access: yesIranian journal of pharmaceutical research : IJPR, 2016
The antibiotic residues in milk are a well-known serious problem and pose several health hazards to consumers. We have described a simple, rapid, and inexpensive DLLME-HPLC/UV technique for the extraction of chloramphenicol and florfenicol residues in milk samples. Under the optimum conditions, linearity of the method was observed over the range 0.02-0.
Karami-Osboo, Rouhollah   +3 more
openaire   +2 more sources

Simultaneous Determination of Multiple Contaminants in Chicken Liver Using Dispersive Liquid-Liquid Microextraction (DLLME) Detected by LC-HRMS/MS

open access: yesFoods, 2023
Simultaneous determination of a mixture of food contaminants, including pesticides, sulphonamides, fluoroquinolones, anthelmintics, and aflatoxin B1, in solid biological samples (chicken liver) by dispersive liquid-liquid microextraction/liquid ...
Belete Eshetu Gebreyohannes   +2 more
doaj   +1 more source

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