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Dithizone as Novel and Efficient Chromogenic Probe for Cyanide Detection in Aqueous Media Through Nucleophilic Addition Into Diazenylthione Moiety by Hossein Tavallali; Gohar Deilamy-Rad; Abolfath Parhami; Sajede Kiyani is a Chemistry article available to read on EtoBox.

What is Dithizone as Novel and Efficient Chromogenic Probe for Cyanide Detection in Aqueous Media Through Nucleophilic Addition Into Diazenylthione Moiety about?

A new selective chemodosimeter probe was developed by the introduction of dithizone (DTZ) as a simple and available dye for detection of cyanide in aqueous media which enables recognition of cyanide over other competing anions such as acetate, dihydrogen phosphate, fluoride and benzoate through covalent bonding. The sensing properties of DTZ were investigated in DMSO/H2O (1:9) and have demonstrated a very high selectivity toward the cyanide anions. A reasonable recognition mechanism was suggested using UV-Vis, (1)H NMR and FTIR spectroscopy techniques. Time dependent density function theory (TDDFT) computations of UV-Vis excitation for DTZ2-CN adduct agreed well with our experimental findings. The detection limit of the new chromogenic probe was measured to be 0.48 μmol L(-1) which is much lower than most recently reported chromogenic probes for cyanide determination. The analytical utility of the method for the analysis of cyanide ions in electroplating wastewater (EPWW), human serum, tap and mineral water samples was demonstrated and the results were compared successfully with the conventional reference method. The short time response and the detection by the naked eye make the m

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Author

Hossein Tavallali; Gohar Deilamy-Rad; Abolfath Parhami; Sajede Kiyani

Publisher

Elsevier BV

Published

2013

Language

EN

Field

Chemistry (Physical Sciences)