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Determination of Iodide as an Organic Derivative by Gas‐Chromatography
Author(s) -
Kou HwangShang,
Wu HsinLung,
Chen SuHwei,
Lin ShunJin
Publication year - 1992
Publication title -
journal of the chinese chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.329
H-Index - 45
eISSN - 2192-6549
pISSN - 0009-4536
DOI - 10.1002/jccs.199200052
Subject(s) - chemistry , iodide , iodine , detection limit , gas chromatography , flame ionization detector , derivative (finance) , chromatography , aqueous solution , electron capture detector , chloroform , analytical chemistry (journal) , inorganic chemistry , organic chemistry , financial economics , economics
A simple and specific method is described for the analysis of iodide in trace proportions. The method is based on the reaction of iodide with pentafluorobenzyl 5‐dimethylamino‐1‐naphthalenesulfonate.in a biphasic system. The resulting derivative was determined on a gas chromatograph with a flame‐ionization detector. The detection limit was about 8 nmol of iodide in 1.0 mL of aqueous sample (S/N = 2; sample size, 5 μL). Application of the method to the analysis of available iodine in povidone‐iodine solution proved feasible.