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.
CITATION STYLE
Pitschmann, V., MatiěJovský, L., Kobliha, Z., & Hon, Z. (2014). A simple colorimetric detector of symmetric 2-(Dialkylamino)ethanethiols as precursors of V-type nerve agents. Journal of the Chilean Chemical Society, 59(3), 2606–2609. https://doi.org/10.4067/S0717-97072014000300017
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