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Detection of exposed phosgene in household bleach: development of a selective and cost-effective sensing tool
Shrabani Saha1, Prithidipa Sahoo1
1Department of Chemistry, Visva-Bharati University, Santiniketan, 731235, India. prithidipa@hotmail.com.
Abstract:
Sensing of gaseous environment pollutants and health hazards is in demand these days and in this regard, lethal phosgene has emerged as a leading entrant. In this contribution, we have successfully developed a facile chemodosimeter (ANO) based on an anthracene fluorophore and oxime recognition site with an interesting mechanism to sense lethal phosgene evolved from bleaching powder, a very popular disinfectant and sanitizer. The ANO probe is highly competent in recognizing deadly phosgene in solution and in the gaseous phase with a detection limit in the nanomolar range (1.52 nM). The sensing mechanism is confirmed by UV-vis, emission spectroscopy, mass spectrometry, and computational studies.
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