[Studies of influential factors in determination of Ca2+ by combination of FAAS with micro-column enrichment].
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.
Liu
Wen-han
WH
College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310032, China.
Hu
Wei
W
Gao
Yun-fang
YF
Zhou
Zhi-ming
ZM
Zhao
Li-da
LD
Zhao
Feng
F
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
D007202:Indicators and Reagents; D002118:Calcium