concentration of spiked Bi3+, elimination of interferants, deposition
time, etc., were investigated. Moreover, the analytical performance of
working electrode modified with Bi film by in situ modewas investigated
in comparison with that by ex situmode. Under selected parameters,
the detection limits, repeatability, and recovery were all evaluated.
Seawater samples collected from coastal sites of Qingdao City were
used to demonstrate the reliability of the new method in comparison
with conventional AAS.