Results 201 to 210 of about 488,156 (285)
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Novel solid phase microextraction fiber coatings: A review.
Journal of Separation Science, 2021The materials used for the fabrication of solid phase microextraction fiber coatings in the past five years are summarized in the current review, including carbon, metal organic frameworks, covalent organic frameworks, aerogel, polymer, ionic liquids ...
Sheng Peng +7 more
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TrAC Trends in Analytical Chemistry, 1999
Abstract In recent years, much attention in analytical chemistry has been paid to sample preparation techniques, especially those which minimise the consumption of organic solvents. One of the most promising of these, solid-phase microextraction (SPME), is presented in both its theoretical and practical aspects.
Helena Prosen, Lucija Zupančič-Kralj
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Abstract In recent years, much attention in analytical chemistry has been paid to sample preparation techniques, especially those which minimise the consumption of organic solvents. One of the most promising of these, solid-phase microextraction (SPME), is presented in both its theoretical and practical aspects.
Helena Prosen, Lucija Zupančič-Kralj
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Novel materials as capillary coatings for in-tube solid-phase microextraction for bioanalysis.
Journal of Separation Science, 2021In-tube solid-phase microextraction with a capillary column as extraction device can be directly coupled with high-performance liquid chromatography systems (HPLC).
C. Grecco, I. D. de Souza, M. E. Queiroz
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Applications of porous frameworks in solid phase microextraction.
Journal of Separation Science, 2021Porous frameworks are a term of attracting solid materials assembled by interconnection of molecules and ions. These trendy materials due to high chemical and thermal stability, well-defined pore size and structure, and high effective surface area gained
M. Khataei, Y. Yamini, Maryam Shamsayei
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Analytical Chemistry, 2020
Molecular analysis of exhaled breath aerosol (EBA) with simple procedures represents a key step in clinical and point-of-care applications. Due to the crucial health role, a face mask now is a safety device that helps protect the wearer from breathing in
Zi-Cheng Yuan +5 more
semanticscholar +1 more source
Molecular analysis of exhaled breath aerosol (EBA) with simple procedures represents a key step in clinical and point-of-care applications. Due to the crucial health role, a face mask now is a safety device that helps protect the wearer from breathing in
Zi-Cheng Yuan +5 more
semanticscholar +1 more source
Multiple solid-phase microextraction
Journal of Chromatography A, 2000Theoretical aspects of multiple solid-phase microextraction are described and the principle is illustrated with the extraction of lidocaine from aqueous solutions. With multiple extraction under non-equilibrium conditions considerably less time is required in order to obtain an extraction yield that is equal to that of one extraction at equilibrium. On
Koster, EHM, de Jong, GJ
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, 2020
Polycyclic aromatic hydrocarbons (PAHs), as an important class of pollutants, are persistent in the environment and have adverse effects on human health, including carcinogenicity and mutagenicity.
V. Jalili, A. Barkhordari, A. Ghiasvand
semanticscholar +1 more source
Polycyclic aromatic hydrocarbons (PAHs), as an important class of pollutants, are persistent in the environment and have adverse effects on human health, including carcinogenicity and mutagenicity.
V. Jalili, A. Barkhordari, A. Ghiasvand
semanticscholar +1 more source
The Journal of the Science of Food and Agriculture, 2020
BACKGROUND Tetracycline antibiotics are employed for human and animal health and speeding up their growth rate. However, their presence in food products and environmental waters has been a concern for years.
H. Sereshti +3 more
semanticscholar +1 more source
BACKGROUND Tetracycline antibiotics are employed for human and animal health and speeding up their growth rate. However, their presence in food products and environmental waters has been a concern for years.
H. Sereshti +3 more
semanticscholar +1 more source
2001
Solid Phase Microextraction (SPME) uses a small volume of sorbent dispersed typically on the surface of small fibres, to isolate and concentrate analytes from sample matrix. After contact with sample, analytes are absorbed or adsorbed by the fibre phase (depending on the nature of the coating) until an equilibrium is reached in the system.
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Solid Phase Microextraction (SPME) uses a small volume of sorbent dispersed typically on the surface of small fibres, to isolate and concentrate analytes from sample matrix. After contact with sample, analytes are absorbed or adsorbed by the fibre phase (depending on the nature of the coating) until an equilibrium is reached in the system.
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Solid-Phase Microextraction Field Sampler
Analytical Chemistry, 2004To facilitate the use of solid-phase microextraction (SPME) for field sampling, a new field sampler was designed and tested. The sampler was versatile and user-friendly. The SPME fiber can be positioned precisely inside the needle for time-weighted average sampling or exposed completely outside the needle for grab sampling.
Yong, Chen, Janusz, Pawliszyn
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