Ion Exchange Resin Bead Decoupled High-Pressure Electroosmotic Pump
نویسندگان
چکیده
منابع مشابه
Long-term stable electroosmotic pump with ion exchange membranes.
We present the design, fabrication and test of a novel inline frit-based electroosmotic (EO) pump with ion exchange membranes. The pump is more stable than previous types due to a new flow component that ensures a controlled width of the diffusion layer close to the ion exchange membranes. The pump casing is constructed in polymers while the EO active part, the frit, is made in a nanoporous sil...
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An advantage of the use of radioautography of axonally transported proteins to trace neuroanatomical pathways is its precision and selectivity. Only cell bodies at the site of injection incorporate the precursor, so that axons of passage are not affected 1,9,11. The selectivity of the method is thus limited only by the size of the injection site. In studies of the goldfish visual system, inject...
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Here, we construct an open-channel on-chip electroosmotic pump capable of generating pressures up to ∼170 bar and flow rates up to ∼500 nL/min, adequate for high performance liquid chromatographic (HPLC) separations. A great feature of this pump is that a number of its basic pump units can be connected in series to enhance its pumping power; the output pressure is directly proportional to the n...
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Electroosmotic pumps have been prepared using macroporous polymer monoliths with their pore surface grafted with the ionizable monomers 2-acrylamido-2-methyl-1-propanesulfonic acid and [2-(methacryloyloxy)ethyl]trimethyl ammonium chloride, respectively. The effects of critical parameters such as pore size of the monolith, percentage of ionizable moieties in the grafted layer, crosslinking densi...
متن کاملThe agglutination of ion exchange resin particles coated with polysaccharide.
NH20H + DPN2H -* NH40H + DPN. If NH4OH is used as substrate and the pH maintained above neutrality, the reverse reaction can be demonstrated (figure 1). In the absence of substrate, extract, or coenzyme no decrease in transmission was noted. NH4C1 and (NH4)2S04 were inactive as substrates at pH 7.0. The enzyme is stable at 60 C for 5 minutes, but not at 65 C. No loss of activity was noted after...
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ژورنال
عنوان ژورنال: Analytical Chemistry
سال: 2009
ISSN: 0003-2700,1520-6882
DOI: 10.1021/ac900570s