A Fast Way to Make a Monolithic Column for a High Pressure Electroosmotic Pump

WANG Rong, ZHANG Feifang, YANG Bingcheng, LIANG Xinmiao

doi:10.2116/analsci.26.921

A Fast Way to Make a Monolithic Column for a High Pressure Electroosmotic Pump

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WANG Rong

East China University of Science and Technology
ZHANG Feifang

East China University of Science and Technology
YANG Bingcheng

East China University of Science and Technology
LIANG Xinmiao

Dalian Institute of Chemical Physics, The Chinese Academy of Sciences

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A simple way was proposed to make a monolithic column for a high pressure electroosmotic pump (EOP). It is in-situ synthesized inside the silica capillary from potassium silicate solution and no frit is required. Compared with common approaches to make columns for EOP, the present method is robust and fast (<4 h). For pure water, a stand-alone EOP operated at 15 kV applied voltage is capable of generating a flow rate of 3.1 μL/min and a maximum static pressure of ∼5.4 MPa.