11 Terms
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Analytical chemistry
Industry: Chemistry
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Analytical chemistry
capillary column
Chemistry; Analytical chemistry
One of the long, narrow (100 meters by 0.2–0.5 millimeter or 330 feet by 0.008–0.02 inch) columns used for capillary gas chromatography. Also known as open tubular column.
retention index
Chemistry; Analytical chemistry
In gas chromatography, the relationship of retention volume with arbitrarily assigned numbers to the compound being analyzed; used to indicate the volume retention behavior during analysis.
gas chromatograph
Chemistry; Analytical chemistry
The instrument used in gas chromatography to detect volatile compounds present; also used to determine certain physical properties such as distribution or partition coefficients and adsorption ...
capillary electrochromatography
Chemistry; Analytical chemistry
A separation technique in which analytes are transported through a small-diameter packed column by electroosmosis (electrically induced flow of the mobile phase) by applying a high potential (5–30 ...
retention time
Chemistry; Analytical chemistry
In gas chromatography, the time at which the center, or maximum, of a symmetrical peak occurs on a gas chromatogram.
gas chromatography
Chemistry; Analytical chemistry
A separation technique involving passage of a gaseous moving phase through a column containing a fixed adsorbent phase; it is used principally as a quantitative analytical technique for volatile ...
capillary electrophoresis
Chemistry; Analytical chemistry
A technique for separating substances from a fluid substrate; the sample is placed in a capillary tube which is then subjected to a high-voltage current that separates its chemical constituents.
