Selective Determination of Cr(VI) by a Self-Assembled Monolayer-Based Electrode.

Citation:

Turyan I, Mandler D. Selective Determination of Cr(VI) by a Self-Assembled Monolayer-Based Electrode. Anal. Chem.Analytical Chemistry. 1997;69 (5) :894 - 897.

Date Published:

1997///

Abstract:

The authors have developed a selective electrode for chromium(VI), based on a self-assembled monolayer of 4-(mercapto-n-alkyl)pyridinium on gold surfaces, which exhibits unique speciation capabilities. Cr(VI) levels ≥1 parts per trillion can be detected using a 4-(mercaptoethyl)pyridinium monolayer. The different parameters that govern the anal. performance of these electrodes were studied in detail and optimized. The organization of the monolayers was examd. by a variety of surface techniques such as XPS, FTIR, and electrochem. Structuring and understanding the solid-liq. interface at the mol. level are essential for designing probes with superior anal. characteristics. [on SciFinder(R)]

Notes:

CAPLUS AN 1997:148744(Journal)