A Simple Determination of Lewisite
Oritest Ltd, Prague
A colorimetric determination of the chemical warfare agent Lewisite (2-dichloro(2-chlorvinyl)arsine) has been proposed which is based on a reaction with copper(I) iodide and sodium hydroxide in the presence of pyridine. The sensitivity of the determination is high, showing a red colour (formation of copper acetylide) in an aqueous sample containing 5 mg.l-1 Lewisite.
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