Detection Papers with Chromogenic Chemosensors for Direct Visual Detection and Distinction of Liquid Chemical Warfare Agents

Chemosensors

Lukáš Matějovský¹  Kamila Lunerová²  Lukáš Králík²  Martin Urban²  Michal Dymák²  Vladimír Pitschmann³ 

[1] Faculty of Environmental Technology, University of Chemistry and Technology, Technická 5, 166 58 Prague, Czech Republic;National Institute for Nuclear, Chemical and Biological Protection, Kamenná 71, 262 31 Milín, Czech Republic;Oritest spol. s r.o., Nábřežní 90/4, 150 00 Prague, Czech Republic;

关键词: chemosensors;    colorimetric detection;    drops and aerosol detection;    chemical warfare agents;   

DOI  :  10.3390/chemosensors7030030

来源: DOAJ

【 摘 要 】

This work provides a summary of our results in the area of the experimental development of detection paper for the detection of liquid phase chemical warfare agents (drops, aerosol), the presence of which is demonstrated by the development of characteristic coloring visible to the naked eye. The basis of the detection paper is a cellulose carrier saturated with the dithienobenzotropone monomer (RM1a)−chromogenic chemosensor sensitive to nerve agents of the G type, blister agent lewisite, or choking agent diphosgene. We achieve a higher coloring brilliance and the limit certain interferences by using this chemosensor in the mix of the o-phenylendiamine-pyronine (PY-OPD). We prove that the addition of the Bromocresol Green pH indicator even enables detection of nerve agents of the V type, or, nitrogen mustards, while keeping a high stability of the detection paper and its functions for other chemical warfare agents. We resolve the resistance against the undesirable influence of water by providing a hydrophobic treatment of the carrier surface.

【 授权许可】

Unknown