Thin-mercury-film voltammetry of inorganic lead(II) complexes in sea water

Voltammetric determination of trace mercury in concentrated chloride media using polymer-film electrodes modified with polyammonium macrocyclic receptors

“…[38][39][40] Following these approaches, complexation equilibria were studied from cyclic voltammetric peak potential shifts, as reported by Petrie and Baier. 41 For the Hg 2+ -Cl 2 system, obtained in concentrated chloride solutions, the prevailing complex species is HgCl 4 22 , the logb values comparing favourably with literature values. 42 Following these approaches, formation of mixed complex species is monitored from the cathodic peak potential shifts measured at a constant concentration of one ligand and gradually increasing the concentration of the other.…”

Application of recursive estimation to the real time analysis of trace metal analytes by linear sweep, pulse, and differential pulse anodic stripping voltammetry

“…For LSASV at TFME, the concentrations reported are significantly lower (ca. 0.8 ppb) than the concentrations determined at HMDE because of the complexation of the lead at the higher pH (8). The average RSDs from the RT and NRT analysis of the low S/N signals arising from PASV and LSASV at HMDE are generally lower (ca.…”

“…Statistical techniques have been applied to the analysis of static overlapping spectra (8). Useful information has been obtained from systems exhibiting seriously overlapping spectra from stopped-flow experiments where the mechanisms of reaction are simple and well known, and for which the kinetic parameters may be obtained separately (9).…”

Redox magnetohydrodynamic enhancement of stripping voltammetry: toward portable analysis using disposable electrodes, permanent magnets, and small volumes

“…4 The magnitude of the resulting anodic peak current is proportional to the amount of analyte reduced in the preconcentration step, and therefore, is proportional to the concentration of analyte in the sample. [4][5][6] Mercury is widely used as the electrode material for ASV due to its large hydrogen overpotential, uniform surface, and suppression of multiple peaks and distorted signals when compared to solid electrodes. 7 In this work, mercury film formation was employed at a solid electrode on a LTCC substrate that was screen-printed with carbon paste.…”