V. Pitschmann, Lukj Matějovský, Z. Kobliha
Sep 1, 2014
Citations
1
Influential Citations
2
Citations
Journal
Journal of The Chilean Chemical Society
Abstract
A colorimetric detector tube of 2-(dialkylamino)ethanethiols as precursors of V-type nerve agents and their hydrolytic products was designed. The detector is based on a reaction of 2-(dialkylamino)ethanethiols with a chromogenic reagent 4-chloro-7-nitrobenzofurazan (NBD-Cl) in alkaline medium leading to characteristic coloured products. The detection limit in water is of 5 μg/ml, the optimum measurement range being up to 250 μg/ml. The detector also presented a response to some other warfare chemical agents, the colour shade being, however, different. Effects of disturbing substances and organic solvents were studied.