gradient elution analysis

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gradient elution analysis [′grād·ē·ənt i′lü·shən ə‚nal·ə·səs]

(analytical chemistry)

A form of gas-liquid chromatography in which the eluting solvent is changed with time, either by gradually mixing a second solvent of greater eluting power with the first, less powerful solvent, or by a gradual change in pH or other property.

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