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Showing 1 to 14 of 14 for “"Cation exchange resin"”.
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LITERATURE REVIEW: The Use of Cation-Exchange Resins in Natural Water Trace Metals Research. ARTICLE: Determination of Free Ion Trace Metal Concentrations in Freshwaters Using Cation-Exchange Resin Equilibrium. A Preliminary Investigation.
… ligands and colloidal surfaces. Use of cation exchange resins, particularly Chelex-100, has been developed over the past few decades and enables preconcentration to yield, upon elution, measurable concentrations of trace metals. These resins can also yield data on the speciation (by …
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Silica Based Solid Phase Extraction Sorbent with a Removable Alkyltrimethylammonium Surfactant Phase
… is initially immobilized onto hydrophilic strong cation exchange resin. The surfactant chain through hydrophobic interactions extracts hydrophobic analytes in the same manner as conventional bonded alkyl moieties on silica based non-polar sorbents. For the extraction of very hydrophobic species …
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Polymer-supported reagents for disinfection of water
A macroporous poly(styrene-co-divinylbenzene) resin having redox N,N-dichlorosulfonamide group, was modified for use in small-scale chlorination of potable water. The resin was synthesized via sulfonyl chloride by modification of the strong acid cation exchange resin, Amberlyst-15. The products …
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Pseudostationary Phase for Solid Phase Extraction
… which is initially immobilized onto hydrophilic cation exchange resin. The surfactant chain through hydrophobic interactions extracts hydrophobic analytes in the same manner as conventional bonded alkyl moieties on silica based non-polar sorbents. Although hydrophobic analytes can be efficiently …
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ΣΥΣΧΕΤΙΣΕΙΣ ΤΙΜΩΝ ΑΙΜΟΣΦΑΙΡΙΝΗΣ Α1(HBA1) ΚΑΙ ΠΟΛΛΑΠΛΩΝ ΠΡΟΣΔΙΟΡΙΣΜΩΝ ΓΛΥΚΟΖΗΣ ΑΙΜΑΤΟΣ ΝΗΣΤΕΙΑΣ ΕΠΙ ΣΑΚΧΑΡΩΔΟΥΣ ΔΙΑΒΗΤΟΥ ΟΨΙΜΟΥ ΕΝΑΡΞΕΩΣ
DETERMINATION OF HAEMOGLOBIN A1 (HBA1) BY CATION EXCHANGE RESIN METHOD USING MICROCOLUMN WAS CARRIED OUT IN 107 MATURITY ONSET DIABETICS ATTENDING THE OUT PATIENT DIABETIC CLINIC OF EVANGELISMOS HOSPITAL. THE PATIENTS ACCORDING TO THEIR TREATMENT WERE DIVIDED IN THREE GROUPS: GROUP A UNDER INSULIN …
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An Investigation of the destruction of ion exchange resins
Ion exchange resins are used for many purposes in various areas of science and commerce. One example is the use of cation exchange resins in the nuclear industry for the clean up of radioactively contaminated water (for example the removal of 137Cs). However, during removal of radionuclides, the …
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Antimicrobial hand rub : an investigation of the various chemicals used in the concentrate skin formula to enhance the product performance
… ions were generated in solution using a Dowex® cation exchange resin for subsequent antimicrobial susceptibility and cytotoxicity testing. The potent antimicrobial efficacy of chlorhexidine digluconate, alone and in combination with other excipients, was observed. All three strains proved to be …
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The Application of Nuclear Magnetic Resonance Towards Understanding Chromatographic Separations of Proteins
… as the model system. Poros 50 HS is a strong cation exchange resin frequently used in industry, with an average particle size of 50 μm and bi-disperse pore distribution of so-called micro- and macro-pores. NMR behaviours of the buffer mobile phase within the chromatography column were first …
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Preparation, characterization and carrier gas transport characteristics of inorganic and organic membranes for application in lactic acid esterification with ethanol.
… for most petrochemical solvents. The esterification process of lactic acid and ethanol to produce EL is an equilibrium-limiting reaction and the selective removal of one of the reaction products can be improved using a membrane reactor and when coupled with a heterogeneous catalyst offers an …
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Bioreaction and separation in preparative batch chromatographic columns : the hydrology of lactose to yield glucose,galactose and oligosaccharides
… as a way of achieving this improvement. A cation exchange resin was selected which had an average particle size of around half that previously used when studying this reaction. A CBRS system was developed which overcame the operational problems (such as high pressure drop development) …
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Processi di biorefining per l'estrazione di secondary chemical building blocks da sottoprotti dell'agro-industria
… polymer for electronic and optoelectronic applications). European agrifood waste represents a low cost abundant raw material (250 millions tons per year) which does not subtract land use and processing resources from necessary sustainable food production. The class of phenolic compounds is …
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Bioreaction and separation in batch chromatographic columns
… cm to 1.97 cm. The stationary phase used was a cation exchange resin (PUROLITE PCR-833) in the Ca2+ form for the hydrolysis and the Mg2+ form for the isomerization reactions. The mobile phase used was a diluted enzyme solution which was continuously pumped through the chromatographic bed. The …
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Diffusive gradients in thin films (DGT) as a technique to predict nutrient availability to plants
… designed for separate assessment of anionic and cationic species in waters or soils typically at concentrations characteristic of highly contaminated systems. In this study a new mixed binding gel ( MBL ) was developed capable of simultaneous assessment of cations and anions in a single assay at …
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Extracellular Polymeric Substances in Activated Sludge Flocs: Extraction, Identification, and Investigation of Their Link with Cations and Fate in Sludge Digestion
… by their association with certain cations and that each fraction behaves differently when subjected to shear, aerobic digestion, anaerobic digestion and other processes. In order to examine this floc hypothesis, the research mainly consisted of three sections: 1) development of EPS …