One of the main directions in development modern electroanalytical chemistry is new effective methods for research and analysis biological objects, particularly, human blood serum. The creation electrochemical sensors a promising approach, which has determined several applied voltammetry field chemical analytical control. In this work, dynamics parameters total antioxidant activity serum patien...

Dionýz Ilkovič (Figure 1) was a Czechoslovak physicist and physical chemist. He made fundamental contributions to the theoretical background of polarography electroanalytical chemistry in general. Polarography is first technique that performs voltammetric study with mercury-dropping electrode 2A). This invented 1922 by Czech chemist Jaroslav Heyrovský, who received Nobel prize 1959 for inventio...

We present the electroanalytical sensing of atropine using disposable and economic screen printed graphite sensors. The electroanalytical determination of atropine is found to be possible over the concentration range of 5 μM to 50 μM with a detection limit of 3.9 μM (based on 3-sigma) found to be possible. We demonstrate proof-of-concept that this approach provides a rapid and inexpensive sensi...

Layer-by-layer (LbL) deposition is a convenient technique for the formation of ultra thin nanocomposite layers containing metallic nanoparticles (NPs) and conducting polymers (CPs). The advantages of this approach for producing composite layers suitable for electroanalytical applications are discussed. Examples of electroanalytical applications of LbL-deposited composites are presented. Composi...

The use of an electrochemically based probe for in situ determination of heavy metals in groundwater is described. The in situ probe, consisting of a microlithographically fabricated iridium ultramicroelectrode array sensor (UMEA), a custom-built miniaturized potentiostat and microcontroller, is connected to a laptop computer for control and data acquisition. The utility of this probe for rapid...

The voltammetric lability of a complex system where a metal ion M and a ligand L form the species ML and ML2 is examined. Together with the rigorous numerical simulation of the problem, two limiting cases are analysed for the overall process ML2 → M: (i) the most common case for aqueous complexes where ML → M is the kinetically limiting step and (ii) the case where ML2 → ML is limiting. In both...

This paper presents a review of microtechnologies relevant to applications in cellular physiology, including biochips, electrochemical sensors and optrodic sensing techniques. Microelectrodes have been the main tools for measuring cellular electrophysiology, oxygen, nitric oxide, neurotransmitters, pH and various ions. Optical fiber sensing methods, such as indicator-based optrodes, with fluore...

Advances in design of selective interfaces and printed technology have mighty contributed to the expansion of the electroanalysis fame. The real advantage in electroanalytical field is the possibility to manufacture and customize plenty of different sensing platforms, thus avoiding expensive equipment, hiring skilled personnel, and expending economic effort. Growing developments in polymer scie...

A new mathematical treatment has been developed and implemented in an EXCEL spreadsheet in order to determine average equilibrium functions from the full set of data measured by scanning stripping chronopotentiometry (SSCP) in solutions containing different proportions of heavy metal ions and small-sized ligands. It has been applied to the experimental systems Cd(II)-phthalate and Cd(II)-iodide...