Results 161 to 170 of about 30,102 (202)
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Liquid phase microextraction applications in food analysis
Journal of Chromatography A, 2011Over 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 +3 more
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Liquid-Phase Microextraction in Bioanalytical Sample Preparation
Bioanalysis, 2009Liquid-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 +3 more
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Headspace Water-Based Liquid-Phase Microextraction
Analytical Chemistry, 2005A new organic-free mode of headspace liquid-phase microextraction termed headspace water-based liquid-phase microextraction has been developed. Five phenols were used as model compounds in the development and evaluation of the procedure. Parameters affecting the extraction efficiency were investigated.
Zhang, J., Su, T., Hian, K.L.
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Successive liquid-phase microextraction of acidic and basic analytes
Analytica Chimica Acta, 2022Practical 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 +5 more
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Liquid–phase microextraction: A review of reviews
Microchemical Journal, 2019Abstract Sample preparation is an important step in chemical analysis. It is generally done to deal with problems associated with the nature of the matrix, low analyte concentrations in real samples or analyte features incompatible with the instrumentation. Classical methods of extraction consume large volumes of hazardous solvents and other reagents
Małgorzata Rutkowska +2 more
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Liquid-phase microextraction preconcentration of impurities
Journal of Analytical Chemistry, 2011The 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 +3 more
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Pharmaceutical applications of liquid-phase microextraction
TrAC Trends in Analytical Chemistry, 2018Abstract 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 +2 more
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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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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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Liquid-Phase Microextraction or Electromembrane Extraction?
Analytical Chemistry, 2019Isolation 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 +5 more
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Dynamic headspace liquid-phase microextraction of alcohols
Journal of Chromatography A, 2005A method was developed using dynamic headspace liquid-phase microextraction and gas chromatography-mass spectrometry for extraction and determination of 9 alcohols from water samples. Four different solvents, hexyl acetate, n-octanol, o-xylene and n-decane were studied as extractants.
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