Isotopically enriched HgO standards were used to synthesize CH3(200)Hg+ and C2H5(199)Hg+ using Grignard reagents. These species were employed for isotope dilution GC-ICPMS to study uptake and biotransformation of ethylmercury in mice treated with thimerosal, (sodium ethylmercurithiosalicylate) 10 mg L(-1) in drinking water ad libitum for 1, 2.5, 6, or 14 days. Prior to analysis, samples were sp...

To investigate mechanisms by which the mummichog (F. heteroclitus) successfully withstands heavy metal pollution, fish were treated with Hg2+ at up to 0.10 mg/L, Cu2+ at up to 1.0 mg/L, or combinations of Hg2+ and Cu2+. In earlier work, protein analysis of liver indicated that most of the cytosolic Cu is bound to the sulfhydryl-rich metallothionein, but that Hg is not associated with cytosolic ...

In this contribution, we propose a deeper understanding of the electronic effects affecting the nucleation of water around the Au+ and Hg2+ metal cations using quantum chemistry. To do so, and in order to go beyond usual energetical studies, we make extensive use of state of the art quantum interpretative techniques combining ELF/NCI/QTAIM/EDA computations to capture all ranges of interactions ...

It has been shown previously that endogenous nitric oxide can buffer arterial blood pressure variability in dogs and rats. In these former studies, all isoforms of the nitric oxide synthase were blocked pharmacologically and an increased blood pressure variability was observed. Thus the question as to which isoform of the nitric oxide synthase is responsible for the blood pressure buffering eff...

Cadmium (Cd2+) and mercury (Hg2+) are two kinds of non-essential heavy metals. Cd2+ Hg2+ can cause thyroid disruption, but very few researchers have investigated the thyroid-disrupting effects these metals on fish, specifically during their early developmental transition stage from embryos to larvae. In this study, wild-type zebrafish were exposed varying concentrations (contents) (0, 10, 100, ...

The present study developed a green metallochromic sensor that detects aluminium (Al(III)) ions in solution and solid state using anthocyanin extract from purple onion peels embedded bacterial cellulose nanofibers (BCNFs). CIE Lab colour parameters demonstrated Al(III) binding causes sensible change colour. A variety of metal including K+, Mn2+, Cu2+, Hg2+, Cr2+, Pb2+ Ni2+ were used to challeng...