An alternative approach to develop a highly sensitive and selective chemosensor for the colorimetric sensing of cyanide in water.
By utilizing a new indirect trick, an old and cheap compound, zincon (2-carboxy-2'-hydroxy-5'-sulfoformazylbenzene), was found to be a "novel" highly sensitive and selective chemosensor for cyanide in pure aqueous solutions, with a detection limit of 0.13 ppm and a color change that could be observed by the naked eye.
Lou
Xiaoding
X
Department of Chemistry, Hubei Key Laboratory on Organic and Polymeric Optoelectronic Materials, Wuhan University, Wuhan, 430072, China.
Zhang
Liyao
L
Qin
Jingui
J
Li
Zhen
Z
D001391:Azo Compounds / Q000737:chemistry*; D003124:Colorimetry / Q000379:methods*; D003300:Copper / Q000737:chemistry; D003486:Cyanides / Q000032:analysis*; D005562:Formazans; D013056:Spectrophotometry, Ultraviolet; D014867:Water / Q000737:chemistry*
D001391:Azo Compounds; D003486:Cyanides; D005562:Formazans; D014867:Water; C009809:2-carboxy-2'-hydroxy-5'-sulfoformazylbenzene; D003300:Copper