Results 211 to 220 of about 488,156 (285)

Solid Phase Microextraction-Based Miniaturized Probe and Protocol for Extraction of Neurotransmitters from Brains in Vivo.

Analytical Chemistry, 2019
Despite the importance of monitoring and correlating neurotransmitter concentrations in the brain with observable behavior and brain areas in which they act, in vivo measurement of multiple neurochemicals in the brain remains a challenge.
Sofia Lendor, Seyed A. Hassani, E. Boyacı, Varoon Singh, T. Womelsdorf, J. Pawliszyn   +5 more
semanticscholar   +1 more source

Preparation of hydrophilic molecularly imprinted solid-phase microextraction fiber for the selective removal and extraction of trace tetracyclines residues in animal derived foods.

Journal of Separation Science, 2020
The present work reported a novel hydrophilic and selective solid phase microextraction fiber by improved multiple co-polymerization method immobilization of tetracycline molecularly imprinted polymer on a stainless steel wire and directly coupled with ...
Yue Lu, Lei Lü, Jinxing He, T. Zhao
semanticscholar   +1 more source

Solid-phase microextraction using a β-ketoenamine-linked covalent organic framework coating for efficient enrichment of synthetic musks in water samples.

Analytical Methods, 2020
Covalent organic frameworks with tunable porous crystallinity and outstanding stability have recently exhibited fascinating pretreatment performance as solid-phase microextraction coatings.
Lianlei Wen, Peng Wu, Leilei Wang, Li-Zong Chen, Ming-lin Wang, Xia Wang, Jin-Ming Lin, R. Zhao   +7 more
semanticscholar   +1 more source

Headspace solid-phase microextraction

Analytical Chemistry, 1993
Headspace solid-phase microextraction is a solvent-free sample preparation technique in which a fused silica fiber coated with polymeric organic liquid is introduced into the headspace above the sample. The volatilized organic analytes are extracted and concentrated in the coating and then transferred to the analytical instrument for desorption and ...
Zhouyao. Zhang, Janusz. Pawliszyn
openaire   +1 more source

In Vivo Solid-Phase Microextraction for Sampling of Oxylipins in Brain of Awake, Moving Rats.

Angewandte Chemie, 2019
Oxylipins are key lipid mediators of important brain processes, including pain, sleep, oxidative stress and inflammation. For the first-time, an in-depth profile of up to 52 oxylipins can be obtained from the brains of awake moving animals using in vivo ...
Alexander Napylov, Nathaly Reyes-Garcés, G. Gómez-Ríos, M. Olkowicz, Sofia Lendor, Cian Monnin, B. Bojko, C. Hamani, J. Pawliszyn, D. Vuckovic   +9 more
semanticscholar   +1 more source

Critical Comparison of Total Vaporization-Solid Phase Microextraction vs Headspace-Solid Phase Microextraction

2021
Solid Phase Microextraction (SPME) is a popular sampling technique that can be paired with Gas Chromatography/Mass Spectrometry (GC-MS). SPME-GC-MS is used in forensic chemistry due to its simplification of the sample preparation process. Headspace-Solid Phase Microextraction (HS-SPME) is a technique where the sample is heated to generate volatiles in ...
openaire   +2 more sources

Solid Phase Microextraction (SPME)

The Chemical Educator, 1997
Solid phase microextraction (SPME) was developed to address the need for a fast, solvent-free and field compatible sample preparation method. It has been applied to a range of applications including environmental, industrial hygiene, process monitoring, clinical, forensic, food and drug analysis.
JANUSZ PAWLISZYN, BARBARA PAWLISZYN, MICHAEL PAWLISZYN   +2 more
openaire   +1 more source

In situ room-temperature fabrication of a covalent organic framework and its bonded fiber for solid-phase microextraction of polychlorinated biphenyls in aquatic products

Journal of Materials Chemistry A, 2019
A novel covalent organic framework (COF) TFPB-BD and its bonded fiber were fabricated for microextraction of polychlorinated biphenyls.
Jing-Xuan Guo, Hai‐Long Qian, Xu Zhao, Cheng Yang, Xiu‐Ping Yan   +4 more
semanticscholar   +1 more source

3 - Solid-phase microextraction

2021
Solid-phase microextraction (SPME) is a reference technique in the analytical sample preparation context. Since its proposal at the ends of the 1980s, the technique has been continuously evolving. While in the first decades of SPME evolution, in-fiber and in-tube approaches were extensively used in different application fields, thin-film ...
A. Shahvar, A. Naccarato, M. Saraji, R. Lucena, S. Cárdenas   +4 more
openaire   +1 more source

Mesoporous graphitic carbon nitride@NiCo2O4 nanocomposite as a solid phase microextraction coating for sensitive determination of environmental pollutants in human serum samples.

Chemical Communications, 2019
We report a facile hydrothermal method to synthesize a novel mesoporous graphitic carbon nitride (MCN)@NiCo2O4 nanocomposite, which can be used as a solid phase microextraction coating for high efficiency extraction and preconcentration of trace ...
Jing Zhang, Wenqi Li, Wenli Zhu, Peige Qin, Minghua Lu, Xuebin Zhang, Y. Miao, Z. Cai   +7 more
semanticscholar   +1 more source