Gold extraction and its commercialization in the Amazon region is mainly by rudimentary procedures. Therefore, during the process of extraction and recovery of this precious metal, large amounts of mercury vapors are thrown into the environment. This paper is an attempt to establish a correlation between the concentration of total mercury in the urine of workers at the gold shop in the Municipa...

The metal-induced intramolecular cyclization reaction of an azo dye was exploited for the colorimetric detection of mercury ions in water. The molecular probe 3 responds selectively to nM-level Hg(II) ions in neutral aqueous solutions.

The stability of the mercury ion mediated dU-HgII-dU pair depends on substituents introduced at the 5-position of the pyrimidine moiety. To this end, a series of oligonucleotides were synthesized with dU modification in central position. Common and new phosphoramidites were utilized. Hybridization experiments provided 12-mer duplexes with non-canonical "dU-dU" pairs. In most cases Hg2+ stabiliz...

health issues such as depression and skin problems, no major illness (such as neurologic or kidney disease) had developed. This case illustrates the difficulty of making general risk assessment of the health effects of mercury since its toxicity varies considerably among exposed subjects. Despite its toxicity, the use of mercury and mercury compounds has been widespread in medicine. Mercury chl...

For many years, atmospheric mercury has been perceived as a global pollutant. Transport of mercury compounds in the atmosphere and its deposition on the earth's surface is an important issue that requires knowledge regarding the circulation of the various forms of this metal between environmental components. There are many numerical models that can be used to study and image this phenomenon. Th...

Owing to the toxicity of mercury in the environment, the determination of trace amounts of mercury has attracted great attention. I 32 The conventional technique of dithizone extraction is not always favoured because the procedure is cumbersome, sensitive to light and is subject to interferences from other metal ions.3 Analytical methods based on ternary complex formation seem to offer superior...

OBJECTIVES The purpose of this study was to investigate whether blood mercury concentrations associated with the presence of dry eye symptoms in a nationally representative Korean population. METHODS Population-based prospective cross-sectional study using the heavy metal data set of the 2010-2012 Korean National Health and Nutrition Examination Survey (KNHANES). A total of 4761 adult Koreans...

Synthetic biology approaches to bioremediation are a key sustainable strategy to leverage the self-replicating and programmable aspects of biology for environmental stewardship. The increasing spread of anthropogenic mercury pollution into our habitats and food chains is a pressing concern. Here, we explore the use of programmed bacterial biofilms to aid in the sequestration of mercury. We demo...

We have carried out molecular-dynamics simulations for nonmetallic fluid mercury in liquid and vapour phases using a Lennard-Jones type effective potential and shown that the structure factors S(Q) and the dynamic structure factors S(Q,ω ) of nonmetallic fluid mercury obtained by our MD simulations are in good agreement with recent x-ray diffraction and inelastic x-ray scattering experiments. W...

383 hexagonal phases, contains within it empty hexagonal tunnels (Magndli, 1949b). It is interesting to note that this has been identified in needles grown from tungsten metal in an electron-diffraction camera, (Hashimoto, Tanaka, Yoda & Araki, 1958) in which the high vacuum could prevent the formation of an A X8 type oxide. A Patterson sunnnation with {IF(hkl)l-IF(~kZ)I} ~ coefficients gives p...