Results 81 to 90 of about 1,468,518 (161)

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

open access: yesJournal 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   +2 more
doaj   +1 more source

Automated in-syringe dispersive liquid-liquid microextraction

open access: yes, 2014
The dispersive liquid-liquid microextraction (DLLME) technique is simple, efficient and environment friendly. One of the main limitations to its further development is the lack of approaches to its automation. In this work, we describe and review recent
Estela, JM (15680714)   +3 more
core  

Natural deep eutectic solvents and natural solid biosorbents in microextraction techniques of organic compounds based on chromatographic techniques: A critical review

open access: yesAdvances in Sample Preparation
Analytical chemistry has increasingly focused on the environmental impact of its methods, with significant attention given to green principles in sample preparation. Techniques like Solid-Phase Microextraction (SPME), Micro-Solid-Phase Extraction (µ-SPE),
Eduardo Carasek   +4 more
doaj   +1 more source

Trends in extraction and purification methods of Lignans in plant-derived foods

open access: yesFood Chemistry: X
Lignans are widely used as dietary supplements within health foods. However, excess addition of lignans can induce adverse reactions, therefore, it is necessary to develop rapid, effective, economical, and environmentally friendly extraction and ...
Yu-tong Yang   +4 more
doaj   +1 more source

Special Commemorative Issue

open access: yes, 1975
Newspaper publication from Liquid Paper Corporation on Letter Perfect, November 1975, with updates to staff and patrons about the on-goings and news updates regarding the ...
Liquid Paper Corporation
core  

The 1978 Letter Perfect

open access: yes, 1978
Periodical issued by the Liquid Paper Corporation with news and updates from various departments and other information of interest to ...
Hart, Joy, Liquid Paper Corporation
core   +1 more source

Emulsive Liquid–Liquid Microextraction for the Determination of Phthalic Acid Esters in Environmental Water Samples

open access: yesMolecules
A convenient, rapid, and environmentally friendly method, emulsive liquid–liquid microextraction combined with high-performance liquid chromatography, was established to determine phthalic acid esters in tap, river, lake, and sea water.
Xinyuan Bi   +6 more
doaj   +1 more source

Desenvolvimento de metodologia analítica para pré-concentraçao de cromo usando microextraçao liquido-liquido e determinaçao por espectrometria de absorção atomica [PDF]

open access: yes, 2009
TCC (graduação) - Universidade Federal de Santa Catarina, Centro de Ciências Físicas e Matemáticas, Curso de Química.Neste trabalho desenvolveu-se uma metodologia para extração e préconcentração de cromo em amostras aquosas usando um sistema de ...
Mior, Renata
core  

In-syringe dispersive liquid-liquid microextraction with liquid chromatographic determination of synthetic pyrethroids in surface water

open access: yesJournal of Analytical Science and Technology, 2012
An indigenously fabricated in laboratory glass syringe was used for in-syringe dispersive liquid-liquid microextraction (is-DLLME) and preconcentration of synthetic pyrethroids (SPs) from surface waters suitable for their determination by high ...
Saeed S. Albaseer   +3 more
doaj  

Air-Assisted Liquid–Liquid Microextraction (AALLME) as an Alternative Sample Pre-Treatment for Isolating Tetrahydrocannabinol (THC) from Hair

open access: yesChemosensors
Cannabis remains the most widely used illicit drug worldwide, identifying it is a routine procedure in forensic toxicology. Due to its widespread use, there is a need for analytical methods that can detect it in biological samples.
Laura Blanco-García   +5 more
doaj   +1 more source

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