Results 181 to 190 of about 29,757 (224)

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
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Liquid-Phase Microextraction

2017
Liquid-phase microextraction (LPME) has emerged over the last 15–20 years as one of the simplest and most easily implemented techniques of sample preparation in the determination of organic analytes in a variety of matrices. This article summarizes the historical developments and various modes of the technique, method development, recent trends, and ...
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Application of ionic liquid in liquid phase microextraction technology

Journal of Separation Science, 2012
Ionic liquids (ILs) are novel nonmolecular solvents. Their unique properties, such as high thermal stability, tunable viscosity, negligible vapor pressure, nonflammability, and good solubility for inorganic and organic compounds, make them excellent candidates as extraction media for a range of microextraction techniques.
Dandan, Han, Baokun, Tang, Yu Ri, Lee, Kyung Ho, Row   +3 more
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Two-phase hollow fiber liquid-phase microextraction

TrAC Trends in Analytical Chemistry, 2018
Abstract Hollow fiber based liquid-phase microextraction technique (HF-LPME) was proposed in 1999 as an efficient alternative to the conventional sample preparation methods. Since its initiation, this technique have become increasingly popular due to their simplicity, low cost, possibility of for automation, and adaptability to a wide variety of ...
Ali Esrafili, Mahroo Baharfar, Mohammad Tajik, Yadollah Yamini, Mahnaz Ghambarian   +4 more
openaire   +1 more source

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
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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

Liquid-Phase Microextraction or Electromembrane Extraction?

Analytical Chemistry, 2019
Isolation of substances by liquid-phase microextraction (LPME) or electromembrane extraction (EME) is becoming more and more important in analytical chemistry. However, the understanding of the mass transfer in LPME and EME is limited, especially for highly concentrated samples.
Libin Wan, Bin Lin, Ruiqin Zhu, Chuixiu Huang, Stig Pedersen-Bjergaard, Xiantao Shen   +5 more
openaire   +3 more sources

Dynamic headspace time-extended helix liquid-phase microextraction

Journal of Chromatography A, 2009
Liquid-phase microextraction (LPME) has been proved to be a fast, inexpensive and effective sample pre-treatment technique for the analyses of pesticides and many other compounds. In this investigation, a new headspace microextraction technique, dynamic headspace time-extended helix liquid-phase microextraction (DHS-TEH-LPME), is presented.
Shih-Pin, Huang, Pai-Shan, Chen, Shang-Da, Huang   +2 more
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Reduction of extraction times in liquid-phase microextraction

Journal of Chromatography B: Biomedical Sciences and Applications, 2001
Recently, we introduced a simple and inexpensive disposable device for liquid-phase microextraction (LPME) based on porous polypropylene hollow fibres. In the present paper, extraction times were significantly reduced by an increase in the surface of the hollow fibres.
Grønhaug Halvorsen, Trine, Pedersen-Bjergaard, Stig, Rasmussen, Knut E.   +2 more
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Dynamic hollow fiber-supported headspace liquid-phase microextraction

Journal of Chromatography A, 2005
With the increasing concern over deteriorating environmental quality, the analysis of organic pollutants in air, water, and soil has become critically important. The development of simple, efficient, and inexpensive analytical sample pretreatment is crucial for monitoring and evaluating the environment.
Xianmin, Jiang, Chanbasha, Basheer, Jie, Zhang, Hian Kee, Lee   +3 more
openaire   +2 more sources