Determination of Aluminum by Adsorptive Cathodic Stripping Voltammetry with 1,2‐Dihydroxyanthraquinone‐3‐Sulfonic Acid (DASA): Effect of Thin Mercury Film Electrode

Abstract

An analytical technique for aluminum (Al) based upon the complexation reaction between Al and the ligand -DASA (1,2-dihydroxy-anthraquinone-3-sulfonic acid) has previously been implemented successfully at the hanging mercury drop electrode (HMDE). There are several advantages of using mercury film electrodes (TMFE) over the HMDE, particularly if disposal of mercury is of concern. The novelty of using TMFE for adsorptive cathodic stripping voltammetry (ACSV) of Al -DASA is demonstrated in this paper. The peak potential used for the detection of Al in this system was at À 1.15 V (vs. Ag/AgCl). The method produced a limit of detection (LOD) of 1 mM (n ¼ 5) and a linear working range of 1 -20 mM Al. Atomic force microscopy methods were used to investigate the nature of the TMFE and its interaction with DASA. The mercury droplets on the TMFE have a limited volume and this may lead to overloading of the electrode at relatively low concentrations of DASA. Interferences from Fe, Ca, Zn and Mg were investigated with only Fe appearing to interfere with the Al-DASA system. Two masking agents (o-phenanthroline and 2,2'-bipyridyl) were shown to be effective at preventing the Fe interference.

Voltammetric determination of aluminium(III) at tannic acid capped-gold nanoparticle modified electrodes

“…In the literature, the determination of aluminium(III) in aqueous solution by voltammetry was achieved via metal-complexation in the presence of complexing agents, such as 1,2-dihydroxyanthraquinone-3sulfonic acid (DASA) [14], alizarin S [15], alizarin violet [16], pyrogallol red [17], 8-hydroxyquinoline [18], cupferron [19], and ionophore JS-1 [20]; using thin mercury film electrodes (TMFE), renewable silver amalgam film electrodes (Hg(Ag)Fe), multi-walled carbon nanotube modified carbon paste electrodes (MWCNT/CPE), mercury electrodes, hanging mercury dropping electrodes (HMDE), HMDEs, and screen-printed carbon electrodes, respectively. Although these chelating agents have shown the capability to form a metal-complex with aluminium ions (Al 3+ ), it is desirable to use alternative materials with a stronger and more selective binding with Al 3+ .…”

Determination of metallic contaminants in human recombinant erythropoietin (EPO) formulations by adsorptive cathodic stripping voltammetry and UV photo-decomposition of samples

“…13,[19][20][21][22][23][24][25][26] It is also well known that AdCSV measurements have seriously drawbacks caused by interferences of organic compounds present in samples of complex matrices. In this work, we observed that the determination of Al, Cr, and Ni by AdCSV directly in diluted (1:10) EPO samples was not possible.…”

Ion-Imprinted Nanofilms Based on Tannic Acid and Silver Nanoparticles for Sensing of Al(III)

“…34,35 These sensors, however, suffer from different drawbacks: low sensitivity or precision, use of mercury electrodes, sensitivity to interfering species and none of them can be selectively deposited on microarrays electrode. 23,25,26,28,[31][32][33][36][37][38] Most of them were designed for (i) Al(III) sensing in acidic conditions 23,27,28,[32][33][34][35] and/or (ii) in physiological conditions but in the absence of serum proteins. 25,26,29 Here, we report for the first time an application of electrochemically assisted self-assembly to form a complex supramolecular hybrid thin film composed of a biodegradable and non-toxic molecules, metal ions and metal nanoparticles.…”