title: [Studies of influential factors in determination of Ca2+ by combination of FAAS with micro-column enrichment].
abstract: It have been studied that the influential factors in determination of calcium by combination of FAAS with micro-cell preconcentration. In order to the preconcentration, the ions can be adsorbed by the self-made electrochemical preconcentration micro-cell. Then the adsorbed ions instantly return into solution which is small in size and directly into FAAS. This method can greatly improve determination sensitiveness. The characteristic concentration and detection limit for the determination of Ca2+ can be improved with 1-2 order of magnitude, the characteristic concentration about 163 times. The results are satisfactory.
authors.affiliation: College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310032, China.
authors.forename: Wen-han
authors.initials: WH
authors.lastname: Liu
authors.forename: Wei
authors.initials: W
authors.lastname: Hu
authors.forename: Yun-fang
authors.initials: YF
authors.lastname: Gao
authors.forename: Zhi-ming
authors.initials: ZM
authors.lastname: Zhou
authors.forename: Li-da
authors.initials: LD
authors.lastname: Zhao
authors.forename: Feng
authors.initials: F
authors.lastname: Zhao
mesh_terms: D000327:Adsorption; D002118:Calcium / Q000032:analysis*; D004563:Electrochemistry; D017022:Flow Injection Analysis; D006863:Hydrogen-Ion Concentration; D007202:Indicators and Reagents; D013048:Specimen Handling / Q000379:methods; D013054:Spectrophotometry, Atomic / Q000379:methods
chemical_list: D007202:Indicators and Reagents; D002118:Calcium