Results 201 to 210 of about 635,398 (265)

Combining graphite with hollow-fiber liquid-phase microextraction for improving the extraction efficiency of relatively polar organic compounds.

Talanta: The International Journal of Pure and Applied Analytical Chemistry, 2020
In this study, we have developed a simple and effective hybrid extraction method based on the incorporation of raw carbon nanosorbents and octanol in the pores of a hollow-fiber membrane for improving the extraction efficiency of relatively polar organic
Chanatda Worawit, Waleed Alahmad, M. Miró, Pakorn Varanusupakul   +3 more
semanticscholar   +1 more source

Headspace mode of liquid phase microextraction: A review

Trends in Analytical Chemistry (TrAC), 2019
In recent years, liquid phase microextraction (LPME) as a solvent–minimized and microscale implementation of sample pretreatment procedure of liquid–liquid extraction has been introduced and obtained great attention among the researchers due to its ...
Mohammad Reza Afshar Mogaddam, A. Mohebbi, Azar Pazhohan, Fariba Khodadadeian, M. Farajzadeh   +4 more
semanticscholar   +1 more source

Liquid phase microextraction applications in food analysis

Journal of Chromatography A, 2011
Over the last years, liquid-phase microextraction (LPME) in its different application modes (single drop microextraction, dispersive liquid-liquid microextraction and hollow fiber-LPME) has been increasingly applied for the extraction of both inorganic and organic analytes from different matrices. Its advantages over conventional extraction procedures (
María, Asensio-Ramos, Lidia M, Ravelo-Pérez, Miguel Ángel, González-Curbelo, Javier, Hernández-Borges   +3 more
openaire   +2 more sources

Three-phase hollow fiber liquid-phase microextraction and parallel artificial liquid membrane extraction

Trends in Analytical Chemistry (TrAC), 2019
Three-phase hollow fiber liquid-phase microextraction (HF-LPME) and parallel artificial liquid membrane extraction (PALME) are both microextraction methods based on supported liquid membranes (SLMs).
Astrid Gjelstad
semanticscholar   +1 more source

Hollow Fiber Liquid-Phase Microextraction

2012
This chapter discusses hollow fiber liquid-phase microextraction (LPME). The chapter comprises a short discussion of the basic setup and principles for LPME, and the historical development. The theory of LPME is also discussed including equations for extraction recoveries and extraction kinetics.
Gjelstad, A., Rasmussen, K. E., Pedersen-Bjergaard, S.   +2 more
openaire   +2 more sources

Liquid-Phase Microextraction in Bioanalytical Sample Preparation

Bioanalysis, 2009
Liquid-phase microextraction (LPME) emerged in the mid-to-late 1990s, facing up to the main shortcomings of the classical liquid-liquid extraction. Since its origin, this new technique has been in continuous development driven by its successful and widespread use in the analytical sciences. Its inherent properties, such as low sample volume requirement,
Rafael, Lucena, Marta, Cruz-Vera, Soledad, Cárdenas, Miguel, Valcárcel   +3 more
openaire   +2 more sources

Liquid-phase microextraction preconcentration of impurities

Journal of Analytical Chemistry, 2011
The miniaturization of the preconcentration methods is one of the fields of contemporary analytical chemistry. A new method of liquid-liquid microextraction preconcentration has been developed for the last 10–15 years; it is highly efficient, rapid, simple in implementation, and ecologically safe. The methodology and principles of the implementation of
V. A. Krylov, A. V. Krylov, P. V. Mosyagin, Yu. O. Matkivskaya   +3 more
openaire   +1 more source

Successive liquid-phase microextraction of acidic and basic analytes

Analytica Chimica Acta, 2022
Practical biological and environmental samples always contain both acidic and basic substances, and the samples are always precious. Thus, separation of analytes with different nature from the same sample was of great significance. Successive liquid phase microextraction (sLPME) of acidic and basic analytes under optimal extraction conditions was ...
Ruiqin, Zhu, Hang, Mei, Huajing, Liu, Changbao, Hong, Xiantao, Shen, Chuixiu, Huang   +5 more
openaire   +2 more sources

Speciation of mercury in water and biological samples by eco-friendly ultrasound-assisted deep eutectic solvent based on liquid phase microextraction with electrothermal atomic absorption spectrometry.

Talanta: The International Journal of Pure and Applied Analytical Chemistry, 2019
A simple, fast, sensitive and eco-friendly ultrasound-assisted deep eutectic solvent liquid phase microextraction (UA-DES-LPME) was developed for preconcentration and speciation of Hg2+ and CH3Hg+ combined with ETAAS. Choline-phenol based DES (1:3, molar
Arnon Thongsaw, Yuthapong Udnan, G. Ross, Wipharat Chuachuad Chaiyasith   +3 more
semanticscholar   +1 more source

Pharmaceutical applications of liquid-phase microextraction

TrAC Trends in Analytical Chemistry, 2018
Abstract Despite the significant advances in analytical equipment, measuring drugs in biological fluids, metabolic studies and determining their therapeutic range and side effects requires a sample preparation step, which is due to the low concentration of the drug and/or the complexity of the sample matrix.
Shahram Seidi, Maryam Rezazadeh, Yadollah Yamini   +2 more
openaire   +1 more source