title: Optical chemosensor for the detection of cyanide in water based on ethyl(hydroxyethyl)cellulose functionalized with Brooker's merocyanine.
abstract: Ethyl(hydroxyethyl)cellulose was functionalized with Brooker's merocyanine. The modified polymer was easily transformed in a film, which could be used as a highly selective chromogenic and fluorogenic chemosensor for the detection of cyanide in water, with detection limits of 1.9 × 10(-5) and 1.0 × 10(-7) mol L(-1). The film was successfully applied to the detection of cyanide in cassava (Manihot esculenta Crantz) roots, which are a well-known source of endogenous biological cyanide.
authors.affiliation: Departamento de Química, Universidade Federal de Santa Catarina , UFSC, CP 476, Florianópolis, Santa Catarina 88040-900, Brazil.
authors.forename: Leandro G
authors.initials: LG
authors.lastname: Nandi
authors.forename: Celso R
authors.initials: CR
authors.lastname: Nicoleti
authors.forename: Ismael C
authors.initials: IC
authors.lastname: Bellettini
authors.forename: Vanderlei G
authors.initials: VG
authors.lastname: Machado
mesh_terms: D001578:Benzopyrans / Q000737:chemistry*; D002482:Cellulose / Q000031:analogs & derivatives* / Q000737:chemistry; D003486:Cyanides / Q000032:analysis*; D007211:Indoles / Q000737:chemistry*; D002365:Manihot / Q000737:chemistry; D014881:Water Supply / Q000032:analysis*
chemical_list: D001578:Benzopyrans; D003486:Cyanides; D007211:Indoles; C462399:ethyl(hydroxyethyl)cellulose; C548873:merocyanine; D002482:Cellulose