Strategies to modify screen-printed electrodes (SPE) for lead determination are reported. Dithizone was mixed with graphite ink to obtain a modified screen-printed strip to detect ppb levels of lead(II) (detection limit 12 microg/L) using square wave anodic stripping voltammetry (SWASV). In addition, screen-printed electrodes were also modified by casting a few microL of a Nafion solution onto the working electrode surface. In this case, ppb levels of lead were detected (detection limit 15 microg/l), using potentiometric stripping analysis (PSA). The addition of an ionophore to Nafion polymer was also investigated, but this did not yield a significant improvement.

Disposable screen-printed electrodes (SPE) mercury-free for the lead detection / Palchetti I.; Upjohn C.; Turner A.P.F.;Mascini M.. - In: ANALYTICAL LETTERS. - ISSN 0003-2719. - STAMPA. - 33(7):(2000), pp. 1231-1246. [10.1080/00032710008543119]

Disposable screen-printed electrodes (SPE) mercury-free for the lead detection

PALCHETTI, ILARIA;
2000

Abstract

Strategies to modify screen-printed electrodes (SPE) for lead determination are reported. Dithizone was mixed with graphite ink to obtain a modified screen-printed strip to detect ppb levels of lead(II) (detection limit 12 microg/L) using square wave anodic stripping voltammetry (SWASV). In addition, screen-printed electrodes were also modified by casting a few microL of a Nafion solution onto the working electrode surface. In this case, ppb levels of lead were detected (detection limit 15 microg/l), using potentiometric stripping analysis (PSA). The addition of an ionophore to Nafion polymer was also investigated, but this did not yield a significant improvement.
2000
33(7)
1231
1246
Palchetti I.; Upjohn C.; Turner A.P.F.;Mascini M.
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Utilizza questo identificatore per citare o creare un link a questa risorsa: https://hdl.handle.net/2158/309843
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