A Simple Method to Prepare On‐Capillary Frits for Micro‐Column Separation |
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Authors: | Yi‐Jun Zhang Na Chen Ai‐Rong Wang Xin‐Jun Wei Yu‐Ping Zhang Ling‐Bo Qu |
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Affiliation: | 1. Henan Institute of Science and Technology, Xinxiang 453003, P. R. China;2. Department of Chemistry, Zheng Zhou University, Henan 450052, P. R. China |
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Abstract: | Sintering stainless steel powders was initially used to prepare the inlet frit in fused silica capillaries. The use of such inlet frits and outlet frits sintered by the stationary phase itself in the capillary to retain C18 particles was demonstrated to withstand the long exposure, up to a high pressure of 60 MPa, for packing and the prepare column was stable and robust enough to do the continuous chromatographic operations. Characterization of the inlet and outlet frits by scanning electron micrography showed the fused metal particles formed a porous network in the capillary inlet and the homogenous separation beddings were obtained by slurry packing. |
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Keywords: | Frit Slurry packing Stainless steel powder Capillary electrochromatography |
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