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The preparation and characteristics of solid-phase microextraction (SPME) fibers coated with Carbowax 20M ormosil (organically modified silica) are described here. Raw fused silica fibers were coated with Carbowax 20M-modified silica using sol–gel process. Scanning electron micrographs of fibers revealed a highly porous, sponge-like coating with an average thickness of (8±1) μm. The sol–gel Carbowax...
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