BACKGROUND We developed a sensitive, specific method for the low-molecular-mass thiols cysteine, cysteinylglycine, glutathione, and homocysteine and validated the method for measurement of glutathione in blood. METHODS The technique was based on reversed-phase chromatography (RPC) coupled on line with cold vapor generation atomic fluorescence spectrometry (CVGAFS). Thiols were derivatized bef...

The present and future air contamination by mercury is and will continue to be a serious risk for human health. This publication presents a review of the literature dealing with the issues related to air contamination by mercury and its transformations as well as its natural and anthropogenic emissions. The assessment of mercury emissions into the air poses serious methodological problems. It i...

Abstract. Human exposure to mercury (Hg) is a cause of concern, due the biomagnification neurotoxic species monomethylmercury (MMHg) in marine ecosystems. Previous research revealed that commercial fish Mediterranean Sea ecosystems are particularly enriched Hg, combination physical and ecological factors. Since fate Hg depends on interactions among several biogeochemical drivers, modeling cruci...

Human-induced expansion of oxygen-deficient zones can have dramatic impacts on marine systems and its resident biota. One example is the formation potent neurotoxic methylmercury (MeHg) that mediated by microbial methylation inorganic divalent Hg (HgII) under conditions. A negative consequence could be an increase in MeHg production due to shifts communities favor microorganisms methylating Hg....

Two sensors, 1 with a spirolactone group and 2 with a spirolactam group containing a phenyl isothiocyanate moiety, based on rhodol, were designed and synthesized in order to obtain materials with excellent optical properties for the detection of environmentally and biologically important Hg2+ and hypochlorous acid (HClO) ions. The crystal structure of 1 revealed two moieties, a rhodamine-like p...

Environmental context Understanding mercury transformations in the aquatic environment is of utmost importance for improvement biogeochemical modelling and sound environmental risk assessment. In such a context, we discuss critically advancement knowledge on role phytoplankton (algae cyanobacteria) cycling environment. Important research advances revealed that different microalgal species cyano...