Discussion
Kovats retention index is used in :
Answer: A
The Kovats retention index is used in gas chromatography.
Devised by Ervin Kovats in 1958, it expresses a compound's retention time relative to those of n-alkanes run under the same conditions: an alkane with n carbons has an index of 100n. Because it depends less on column and instrument settings than raw retention time, it helps identify compounds across laboratories.
HPLC, capillary electrophoresis and paper chromatography use other measures of retention or migration, such as retention factors and Rf values.
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