Disposable screen-printed electrodes (SPE) mercury-free for lead detection
2000 (English)In: Analytical Letters, ISSN 0003-2719, E-ISSN 1532-236X, Vol. 33, no 7, 1231-1246 p.Article in journal (Refereed) Published
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 mu g/l) using square wave anodic stripping voltammetry (SWASV). In addition, screen-printed electrodes were also modified by casting a few mu l of a Nafion(R) solution onto the working electrode surface. In this case, ppb levels of lead were detected (detection limit 15 mu g/l), using potentiometric stripping analysis (PSA). The addition of an ionophore to Nafion(R) polymer was also investigated, but this did not yield a significant improvement.
Place, publisher, year, edition, pages
Taylor andamp;amp; Francis , 2000. Vol. 33, no 7, 1231-1246 p.
screen-printed electrodes; dithizone; Nafion (R); lead detection; potentiometric stripping analysis; square wave anodic stripping voltammetry
Engineering and Technology
IdentifiersURN: urn:nbn:se:liu:diva-65238ISI: 000087131800003OAI: oai:DiVA.org:liu-65238DiVA: diva2:394996