Talk:Eluent

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I don't think that the sample compounds can be considered part of the mobile phase. The sample is dissolved in the mobile phase and the mobile phase moves the sample along but to say that the sample is integral part of the mobile phse is in my opinion incorrect. See definition of mobile phase according to IUPAC:

mobile phase in chromatography

A fluid which percolates through or along the stationary bed, in a definite direction. It may be a liquid (liquid chromatography) or a gas (gas chromatography) or a supercritical fluid (supercritical-fluid chromatography). In gas chromatography the expression carrier gas may be used for the mobile phase. In elution chromatography the expression 'eluent' is also used for the mobile phase.

Source: PAC, 1993, 65, 819 (Nomenclature for chromatography (IUPAC Recommendations 1993)) on page 824 PAC, 1990, 62, 2167 (Glossary of atmospheric chemistry terms (Recommendations 1990)) on page 2202 Orange Book, p. 97 Xenofonos (talk) 21:39, 3 April 2008 (UTC)