title: A selective modified carbon paste electrode for determination of cyanide using tetra-3,4-pyridinoporphyrazinatocobalt(II).
abstract: A chemically modified carbon paste electrode with 3,4-tetra pyridinoporphirazinatocobalt(II) (Co(3,4 tppa) was applied to the determination of free cyanide ion. The electrode has a linear range between 1.5x10(-5)M and 1.0x10(-2)M with a Nernstian slope of 60+/-1.5mV/decade and its detection limit is 9x10(-6)M. The response time of electrode is 5min. The proposed electrode was applied successfully for the determination of cyanide in commercially available spring water. Some anions, such as SCN(-), I(-), Cl(-), Br(-) and oxalate that are usually serious interfering species for most of cyanide selective electrodes, did not have any interfering effect for this proposed electrode.
authors.affiliation: Department of Chemistry, Shiraz University, Shiraz 71454, Iran.
authors.forename: A
authors.initials: A
authors.lastname: Abbaspour
authors.forename: M
authors.initials: M
authors.lastname: Asadi
authors.forename: A
authors.initials: A
authors.lastname: Ghaffarinejad
authors.forename: E
authors.initials: E
authors.lastname: Safaei