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Filter paper
Apr 27, 2017

Most of the filter paper is made of cotton fibers and uses different methods according to different uses. Since its material is a fibre manufactured product, there are countless holes on its surface to be passed by liquid particles, and the larger solids cannot pass. This property permits the separation of liquid and solid substances mixed together.

Paper chromatography is an inert supporter of filter papers. Filter paper fibers and water has a strong affinity, can absorb about 22%% of water, and in which 6e water is the hydrogen bonding form and cellulose hydroxyl combination, in general conditions more difficult to remove, and the filter paper fibers and organic solvents are very weak affinity, so the general paper chromatography is actually the combination water of the filter papers fibers for stationary phases, with organic solvents as flowing phases, when the flow Xiangyan paper passes through the sample, the solute on the sample point is continually allocated between the water and the organic phase, and some samples are moved with the flow. Into the non-solute zone, at this time redistribution, part of the solute by flow into the stationary phase (water phase). With the movement of the flow phase, various parts are allocated continuously according to their respective distribution coefficients and moving along the flow, so that the material is separated and purified.

Filter paper (filter Paper) is a common chemical laboratory filtration tool, the common shape is round, made of cotton fiber.


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