MERCURY THREAD ELECTRODE IN A FLOW CELL

A mercury thread electrode modified with hydrophilic dialysis membrane was first introduced in 1994. Incorporation of this electrode in a fl ow stream is now introduced. The flow of solution and mercury are conv eniently achieved using two syringe pumps. The cell can be used with a sample loop of a desired volume; hence, it allows flow injection appl ications. Characterization of the flow cell was performed considering various experimental parameters using lead(II) as the analyte. Calibra tion curves for the lead(II) exhibit good linearity.