Mercury selenides

Sodium selenite has also been incorporated into styrene—butadiene mbber and used in a pellet form which results in the slow release of selenium into water. These pellets have been placed in lakes in Sweden which have fish contaminated with mercury owing to high levels of that element in the water. The selenium released by the pellets reacts with mercury to form insoluble, heavy mercury selenide which setties to the lake bottom and removes mercury from the ecosystem (126). 

Selen-oxyd, n. selenium oxide, -quecksilber, n. mercury selenide. -quecksilberblei, n. (Min.) lehrbachite. -salz, n. selenide. 

Natarajan C, Sharon M, Levy-Clement C, Neumann-SpaUart M (1995) Electrochemical deposition of n-zinc mercury selenide thin films. Thin Solid Films 257 46-53 Weiss G (1946) Ann Chim 1 446. 

The group of Stickney reported the first deposits of mercury selenide (HgSe) formed via ECALE, using a thin layer flow system [54, 55]. The solutions used were HgO (pH 2) and Se02 (pH 3) with Na2S04 as a supporting electrolyte, and the... 

In the Boliden process, developed by Boliden Kemi Company in Sweden, filter beds containing amorphous selenium are used to filter the gases. Mercury in the gas is deposited in the filter as mercury selenide (HgSe). Alternatively, the gases can be scrubbed with a slurry of amorphous selenium, whereupon mercury is precipitated as HgSe. Activated carbon filters are also useful for absorbing mercury vapor from the gas. 

A totally different procedure was followed in 1852 by Erdmann and Marchand, who analysed mercury selenide with the following result ... 

SIL/KAR] Silina, E. Y., Karapet yants, M. K., Dissociation of mercury selenide vapour, Russ. J. Phys. Chem., 39, (1965), 1611-1614. Cited on pages 280,281,483. 

H202 HYDROGEN PEROXIDE 797 HgSe[g] MERCURY SELENIDE (GAS) 833... 

Mercury concentrations were highest in lignite coal (0.12mg/kg DW), lowest in sub-bituminous coal (0.03 mg/kg DW) and intermediate (0.07 mg/kg DW) in bituminous coal samples measured. More recent information indicates that coal contains, on an average 0.2 mg Hg/kg and may contain as much as 1.0 mg/kg. Most of the mercury in coal is associated with arsenic-bearing pyrite other forms include organically bound mercurials, elemental mercury, and mercuric sulfides and selenides. In coal samples with low pyrite, mercury selenides may be the primary form. 

P. Howes, M. Green, C. Johnston, A. Crossley, Synthesis and Shape Control of Mercury Selenide (HgSe) Quantum Dots. Journal of Materials Chemistry 2008,18, 3474. 

Among a large number of minerals analysed by H. Rose (often in connexion with mineralogical investigations of his brother Gustav, but published independently) were micas," zeolites, spinels, aluminates, selenium minerals from the Harz,ii mercury selenide from Mexico, arsenides, antimonides, and... 

The elimination of methylmercury in humans can be described by a single-compartment model with a half-time of 39-70 days [37,38]. The excretion mechanism of inorganic mercury is much more complicated. In addition to fractions with short half-times of a few days or weeks for most of the absorbed mercury, there is a long one which probably lasts years [39-42]. Biochemical inactive mercury-selenide compounds may be responsible for this extremely long half-time of small quantities of inorganic mercury. 

Mercury selenide HgSe T2 F43m fee Zinc blende... 

Mercury selenide HgSe 28.61 30-380 °C From temperatur dependence of lattice constant a... 

Tabletr.1-177 Phonon frequencies/wavenumbers at symmetry points for mercury compounds. Mercnry sulfide (HgS), 80 K, from infrared reflectance mercury selenide (HgSe), RT, from resonance Raman scattering mercury telluiide (HgTe), 290 K, from neutron scattering...

Mercury selenide is a zero-gap material (semimetal). The lowest conduction band minimum and the top of the valence band are degenerate at the center of the Brillouin zone (Fg). The F level, which for most cubic semiconductors is the conduction band minimum and has an energy larger than that of the Fg state, is found to be below the Fg state in HgSe ( negativ energy gap , inverted band structure). 

Mercury selenide HgSe -0.274 r8v nd r 6c 4.2 Shubnikov-de Haas effect... 

Mercury selenide HgSe mn Strongly dependent on electron concentration... 

Mercury selenide HgSe 15x10 300 All HgSe samples show n-type conductivity... 

Mercury selenide HgSe 25.6 12-21 Reflectivity and Kramars-Kronig analysis of fits to data on plasmon-LO-phonon coupled mode... 

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