Determination of pertechnetate by liquid chromatography with reductive electrochemical detection

Subtractive anodic stripping voltammetry with flow injection analysis

“…As a result, 1-min deposition is sufficient for measurements at the parts-per-billion concentration level. The inconvenience associated with the deaeration of small sample volumes (20) is eliminated by the effective compensation of the oxygen background. Nondeaerated sample and carrier solutions were used throughout this study.…”

Use of mercury drop electrodes for polarographic measurements in flowing solutions

“…Pulse amperometric techniques have been widely applied in flow analysis [35,[46][47][48][49]. For flow systems, the improvement in the detection limit is not as drastic as for quiescent solutions; some studies reported similar detection limits for pulse and dc detection.…”

“…Among the inorganic ions determined were cadmium [45,46,52,87,88], cobalt (661, copper [40, 52, 60, 66, 881, iron [88], manganese [66], nickel [66, 681, lead [37,45,46], thallium [ 271, zinc [37,45,46, 581, and the anions iodide, bromide, chloride, and thiocyanide [89], sulfide and cyanide [90], and pertechnetate [47]. The determined organic compounds included nitrocompounds such a s nitrobenzene [35, 74, 75, 80, 871, ni- trophenols [56, 75, 80, 87, 911, nitrotoluenes [92, 931, nitronaphtalenes [94], nitropyridine derivatives [95], nitrofuran derivatives [96], nitrobenzoic acids [ Table 3.…”