Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 7 of 7 for “"IR-120"”.
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Determinación cualitativa de aminoácidos en miel, utilizando resina de intercambio iónico y cromatografía de capa fina
… que permitió evaluar la calidad de la miel a partir de la presencia o no de los aminácidos característicos de la misma. El análisis se realizó empleando cromatografía de columna con resina de intercambio iónico AMBERLITE IR-120 la cual extrajo los aminoácidos presente en las muestras analizadas, …
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The amino acid and monosaccharide content of the cell walls of Thiobacillus thiooxidans
… 08 and Tween 80 were investigated for their ability to reduce the lag period found in the growth of T. thiooxidans. Although a concentration of 12.5 ppm Tween 80 did decrease the lag period, the use of these surfactants was not effective in increasing the amount of cells grown over a …
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Towards the separation of linear α-olefins from industrial process streams using transition metal stationary phases
… column as compared to the microporous Amberlite IR(120) resin. Olefins were so strongly retained on the Ag⁺exchanged Amberlyst A-15 resin that they could only be eluted efficiently from the GC column at elevated temperatures. The Ag⁺ exchanged resin was however found to undergo degradation at …
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Separation, preconcentration and determination of rare earth elements by inductively coupled plasma emission spectroscopy
… using three cation exchange resins; Amber lite IR 120 (H), Zeocarb 225 and Dowex 50-WXS. A gradient acid elution method was established using a 15 cm by 20 mm Zeocarb 225 column. The sample was eluted with 140 ml of a 1.5 M H⁺ solution containing 0.75 M Cl⁻ and 0.75 M NO₃⁻, this fraction …
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Extensives Monitoring von Stoffflüssen in Waldökosystemen
… und die anschließende aufwändige Laboranalyse wird durch die Methodik vorgegeben. <br> <br>Es wurde eine automatisch gesteuerte Ionenaustauscheranlage (IAA) entwickelt, die eine extensive Beprobung über mehrere Wochen bis Monate ermöglicht. Die Wasserinhaltsstoffe werden im Gelände auf …
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Study of the aldopentoses and fucose in human urine by thin-layer chromatography
… devised whereby it has become possible for the first time rapidly (3 h) to separate and measure at microgram levels, arabinose, ribose, xylose and fucose from the numerous other sugars present in urine from human subjects. On thin -layers of Kieselguhr G buffered with sodium acetate (acetate …
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Enzyme-Linked Electrochemical Detection of Urinary Sarcosine
… these problems, this thesis sought to develop a first-generation enzyme-linked electrochemical biosensor (EnzL-ECBS) to detect sarcosine at clinically relevant concentrations for PCa diagnosis in human urine. Combining a silica-immobilised chimeric monomeric sarcosine oxidase (mSOx) biorecognition …