title: [Determination of copper and cadmium in water by continuous flow analysis].
abstract: A continuous flow analysis system for the preconcentration of Cu2+ and/or Cd2+ in water was developed. Trace copper or cadmium in water could be concentrated on activated carbon particles packed in micro column at pH > or = 9.0. The adsorbed analyte was eluted with 0.5 ml 2.5% nitric acid and determined by flame atomic absorption spectrometry. A sample size of 10-25 ml sufficed for the determination of copper2+ or cadmium at a level as low as microgram/L. The relative standard deviation of 6 parallel determinations was 4.3% for copper and 11% for cadmium. The proposed method was applied to the determination of copper and cadmium in natural water with a recovery of 84.4%-118%.
authors.affiliation: Department of Sanitary Technology, Chengdu.
authors.forename: K
authors.initials: K
authors.lastname: Zhang
authors.forename: C
authors.initials: C
authors.lastname: Li
authors.forename: Y
authors.initials: Y
authors.lastname: Zhang
authors.forename: J
authors.initials: J
authors.lastname: He
authors.forename: D
authors.initials: D
authors.lastname: Huang
authors.forename: X
authors.initials: X
authors.lastname: Yang
mesh_terms: D002104:Cadmium / Q000032:analysis*; D003300:Copper / Q000032:analysis*; D005618:Fresh Water / Q000737:chemistry*; D013054:Spectrophotometry, Atomic / Q000379:methods
chemical_list: D002104:Cadmium; D003300:Copper