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The nature of rest silanol groups on the surfaces of

The nature of rest silanol groups on the surfaces of silica based solid phase extraction materials Alfred A. Christy Department of Science, Faculty of Engineering and Science, University of Agder,

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Ultra-trace determination of polycyclic aromatic

A graphene (Gr) functionalized silica gel (GrSiO2) sorbent was prepared and used as a new sorbent for solid-phase extraction (SPE) of polycyclic aromatic hydrocarbons (PAHs) including naphthalene, acenaphthylene, fluorene, phenanthrene, fluoranthene, and pyrene.

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Analytical Methods 2014Kejing Huang Yujie Liu Jing Li Tian Gan Yanming Liu Xinyang Normal University

3ml NH2 SPE Cartridge Solid Phase Extraction Column

Description of Ion-Exchange NH2 SPE Cartridges. SPE NH2 is silica-based sorbent bonded to the aminopropyl functional group. It has the weak polar stationary phase and anion exchanger, through weak anion exchange (aqueous solution) or polarity adsorption (non-polar organic solution) to reach the effect, therefore has a dual role.

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Solid Phase Extraction Products Fisher Scientific

Solid Phase Extraction Products Thermo Scientific™ HyperSep™ Universal Vacuum Manifold Use this flexible vacuum manifold to process samples using both solid phase extraction (SPE) cartridges and 96 well plates.

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A polymer monolith incorporating stellate mesoporous

found when the material was applied to solid phase microextraction of fluoranthene. with particulate and monolithic silica-based stationary phases SMSN incorporated monolith was also used as solid phase microextraction (SPME) for extraction of complex samples. Experimental materials and methods

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Agilent's New Weak Anion Exchange (WAX) Solid Phase

(WAX) Solid Phase Extraction Cartridges SampliQ WAX Agilent's SampliQ WAX provides material is greater than silica-based sorbent. A 60-mg bed of polymeric material is The Agilent SampliQ WAX solid-phase extraction cartridges are compatible with water, acid, basic solvents from pH 0 to 14, and most organic solvents.

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Application of molecular imprinted polymer nanoparticles

Application of molecular imprinted polymer nanoparticles as a selective solid phase extraction for preconcentration and trace determination of 2,4-dichlorophenoxyacetic acid in the human urine and different water samples

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Methodologies for the Extraction of Phenolic Compounds

tendency to replace LLE by solid-phase extraction (SPE) for liquid samples. SPE was developed in the 1980s, and has emerged as a powerful tool for chemical isolation and purification.

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Molecules 2009Cristina Mahugo Santana Zoraida Sosa Ferrera M Esther Torres Padron Jose JuaSolid-phase microextraction Solid phase extraction Water pollution Soil contamination

Magnetic Nanoparticle-Based Solid-Phase Extraction of

Read Magnetic Nanoparticle-Based Solid-Phase Extraction of Vitamin B12 from Pharmaceutical Formulations, Biological Trace Element Research on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.

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Biological Trace Element Research 2012Yadollah Yamini Elham Tahmasebi Leila Ranjbar Tarbiat Modares UniversityInductively coupled plasma atomic emission spectroscopy Vitamin B12

Solid Phase Extraction Chromatography EPRUI Biotech

Solid phase extraction (SPE) is a sample preparation process by which compounds that are dissolved or suspended in a liquid mixture are separated from other compounds in the mixture according to their physical and chemical properties.

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Simultaneous assessment of lipid classes and bile acids in

in human intestinal fluid by solid-phase extraction and extraction (SPE) method using C18 and silica columns for the separation of BAs, phospholipids (PLs), and neutral present here a new C18 SPE protocol based on the simultaneous adsorption of BAs and total lipids in human

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Journal of Lipid Research 2007Eva M Persson Lars Lofgren Goran I Hansson Bertil Abrahamsson Hans LennernasSmall intestine Light scattering Coefficient of variation Acetic acid Bile acid Phar

SupelMIP Solid Phase Extraction Products Sigma-Aldrich

C18-C2 Silica Based SPE SupelMIP SPE Non-Selective Highly Selective Dirty Extracts Clean Extracts (Lower LODs/LOQs) (MIP) solid phase extraction with LC-MS/MS detection. This study utilizes the unique extraction capabilities of MIPs to successfully quantitate ten

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United States English Solid Phase Extraction (SPE)

Solid Phase Extraction (SPE) Grace has been making Davisil silica for over a quarter century. It is the foundation for all our silica-based SPE products, including Alltech, Vydac, and GracePure™ brands. Having complete control over the entire media process ensures highly consistent performance, and uninterrupted supply.

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Auto SPE Solid Phase Extraction (SPE) Hanon Instruments

Hanon Auto SPE is an automated solid-phase extraction (SPE) system designed for use with large samples (0.5 ML 20L) for the isolation of trace organics in water or aqueous matrices. Auto SPE Offer Reliability and Precision

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SPE Columns, SPE Cartridges, Chrompure SPE Columns, Solid

Solid-phase extraction (SPE) is a technique designed for rapid sample preparation and purification prior to chromatographic analysis. Chrompure SPE products allow you to efficiently and quantitatively extract the analyses you're looking for from any sample type.

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Application of Porous Membrane-Protected Micro-Solid-Phase

This report describes the use of a porous membrane-protected micro-solid-phase extraction (μ-SPE) procedure to extract acidic drugs from wastewater that are then determined by high-performance liquid chromatography with ultraviolet detection.

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Analytical Chemistry 2007Chanbasha Basheer Han Guang Chong Toh Ming Hii Hian Kee LeeStandard deviation Wastewater Sample preparation Drug Detection limit Ibuprofen

Proton sponge-functionalized silica as high performance

Proton sponge-functionalized silica as high performance adsorbents for solid-phase extraction of trace perfluoroalkyl sulfonates in the environmental water samples and their direct analysis by MALDI-TOF-MS

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Analyst 2012Dong Cao Ming Hu Chunguang Han Jiyao Yu Lin Cui Yongxue Liu Chinese Academy of Sciences

Chemically modified silica gel for selective solid-phase

Silica gel (Baker Analyzed R) was purchased from J.T. Baker. 3-pentano-2,4-dione derivatives, which were used for the modification of the silica surface, were obtained from the Metalorganics Department of the Adam Mickiewicz University, Poznań, Poland. Solvents used for the modification reactions

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International Journal of Environmental Analytical Chemistry 2011Iwona Rykowska Wieslaw WasiakMetal Solid phase extraction Silica gel Nitrogen Inductively coupled plasma Dete

Synthesis of chitosan-SnO2 nanoparticles biocomposite for

J. Fenga, X. Hea, X. Liub, X. Suna, Y. Lia, Preparation of magnetic graphene/mesoporous silica composites with phenylfunctionalized pore-walls as the restricted access matrix solid phase extraction adsorbent for the rapid extraction of parabens from water-based skin toners, J. Chromatogr.

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Development of polyacrylic acid-functionalized porous zinc

A polymer-based cation exchanger and silica-based sorbents are generally used for the conventional solid phase extraction (SPE) toward alkaloids, because they provide both ion exchange interactions and strong hydrophobic interactions between the stationary phase and samples.

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Empore ™ Disk Technology Empore™ Solid Phase Extraction Disks are produced by trapping sorbent particles within an inert matrix of polytetrafl uoroethylene (PTFE). The resulting particle-loaded membrane yields a denser, more uniform extraction

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PAL SPME Arrow An Evolutionary Step Forward for Solid

PAL SPME Arrow is based on a stabilising stainless steel inner rod that runs continuously through the entire fibre, carrying the cylindrically shaped sorption phase and connecting the upper parts of the device to its solid

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Siliconglass instrumented solid-phase extractionzone

Siliconglass microchips were designed and fabricated for on-chip solid phase extraction (SPE) and zone electrophoresis studies. The solvent channels for extraction and the separation channels for analyses were fabricated sequentially on the silicon device.

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Bond Elut C18 SPE from Agilent Technologies

Bond Elut C18 is the most hydrophobic, bonded silica sorbent available in the Bond Elut range. It is the most popular SPE sorbent because of its extreme retentive nature for non-polar compounds. It is the most popular SPE sorbent because of its extreme retentive nature for non-polar compounds.

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Evaluation of a novel silica-supported solgel sorbent

The imprinted silica sorbent was used for solid phase extraction (SPE). Using water as loading solvent, the extraction efficiency for estazolam was higher compared to the use of an organic solvent. The imprinted silica sorbent was selective not only for the template, but also for the analogue.

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Mikrochimica Acta 2009Guoyou Jin Youwen Tang South China Normal UniversityMolecule Sorption Sol-gel Chemical modification Liquidliquid extraction Polymer