title: Indirect determination of cyanide in water by atomic-absorption spectrophotometry.
abstract: An indirect method for determination of trace cyanide in water by atomic-absorption spectrophotometry is described. Cyanide forms a stable complex anion with Pd in alkaline solution. This complex anion can form an ion-association complex with tetra-alkylammonium ions which can be extracted into n-butyl alcohol with an efficiency higher than 90%. The extract can be analysed directly for palladium (and hence indirectly for cyanide) by flame atomic-absorption spectrophotometry. The detection limit for cyanide by this method is 0.1 mug ml in the n-butyl alcohol extract. Beer's law is obeyed for 0.13-9 mug of CN(-) per ml of n-butyl alcohol. Several foreign ions do not interfere.
authors.affiliation: Department of Chemistry, East China Normal University, 3663 Chung Shan Road (N.), Shanghai, People's Republic of China.
authors.forename: X
authors.initials: X
authors.lastname: Bo-Xing
authors.forename: X
authors.initials: X
authors.lastname: Tong-Ming
authors.forename: F
authors.initials: F
authors.lastname: Yu-Zhi