AGNES (Absence of Gradients and Nernstian Equilibrium Stripping) is a new electroanalytical technique designed to determine free heavy metal ion concentrations in solutions. AGNES had been applied, up to date, with conventional equipment such as the Hanging Mercury Drop Electrode (HMDE). Due to their much smaller volume, microelectrodes can reach a given preconcentration factor within a much sh...

Since the rapid flybys of Mariner 10 in the late seventies, Mercury is known to have an intrinsic magnetic field that dominates the interactions of Mercury with its space environment. Even though important aspects of this interaction have been probed by the Mariner 10 instruments, crucial aspects remain unknown and unexplored. In particular there are fundamental uncertainties concerning the ion...

occupational exposure to elemental mercury vapor usually occurs through inhalation during its utilizations. this leads to a variety of adverse health effects. in some islamic cities, this type of poisoning may occur during gilding of shrines using elemental mercury with gold. herein, we report on three male patients aged 20–53 years, who were diagnosed with occupational metallic mercury poisoni...

The goals of this program have been to develop a series of new compounds that act as redoxrecyclable heavy metal ion selective materials. This has been a preliminary exploration into the viability of creating materials that act as selective exchange media. We have historically been involved in the separation of ionic pollutants such as radionuclides or toxic heavy metal ions from water by desig...

OBJECTIVES There is concern that hydrogen peroxide generated by tooth bleaching agents may cause enhanced metal ion release (including mercury) from dental amalgam following contact. The aim of this in vitro study was therefore to investigate the effect of a carbamide peroxide (CP) based tooth bleaching gel on metal ion release from dental amalgam. METHODS Dental amalgam discs were prepared a...

The article presents the results of research on determination mercury in fish muscles and seafood, conducted based State Research Institute for Laboratory Diagnostics Veterinary-Sanitary Examination by Atomic Absorption Spectrometry as systematic period from 2019 to 2021. Mercury content was determined atomic absorption spectrometry with direct sample injection. study carried out using a Milest...

A model for negative glow metal-vapor ion lasers that self-consistently describes the dynamics of the negative glow and the cathode sheath regions of the discharge has been developed. The model computes the electron energy distribution and the population of relevant excited states in the negative glow self-consistently with the charged particle fluxes and electric field distribution in the cath...

Ion homeostasis plays important roles in development of metabolic diseases. In the present study, we examined the contents and distributions of 25 ions in chicken muscles following treatment with selenium (Se) deficiency for 25 days. The results revealed that in chicken muscles, the top ranked microelements were silicon (Si), iron (Fe), zinc (Zn), aluminum (Al), copper (Cu) and boron (B), showi...

Mercury ion (Hg2+) is recognized as one of the most toxic metal ions for the environment and for human health. Techniques utilized in the detection of Hg2+ are an important factor. Herein, a simple thymine was successfully employed as the surface enhanced Raman spectroscopy sensor for Hg2+ ion detection. The limit of detection (LOD) of the developed sensor is better than 0.1 nM (0.02 ppb). This...

A new 3-D mercury model has been developed within the Danish Arctic Monitoring and Assessment Programme (AMAP). The model is based on the Danish Eulerian Hemi-spheric Model, which in the original version has been used to study the transport of SO 2 , SO 2− 4 and Pb into the Arctic. It was developed for sulphur in 1990 and in 1999 5 also lead was included. For the current study a chemical scheme...