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  • Fungal Formation of Selenium and Tellurium

    Selenium oxide and tellurium oxide were also found after growth of Trichoderma harzianum with 1 mM selenite and tellurite as well as the formation of elemental selenium and tellurium. The hyphal matrix provided nucleation sites for metalloid deposition with extracellular protein and extracellular polymeric substances localizing the resultant Se or Te nanoparticles.

    (PDF) Fungal formation of selenium and tellurium

    Most organisms were able to grow on both selenium- and tellurium-containing media at concentrations of 1 mM resulting in extensive precipitation of elemental selenium and tellurium on fungal...

    The Quantitative Determination of Selenium and Tellurium

    green of selenium or the red of tellurium shows a color reaction. Second Procedure. Crude selenium or tellurium containing material is fused with five or six times its weight of potassium cyanide. Tellurium forms potassium telluride, while selenium and sulphur form selenocyanate, and sulphocyanate. The fusion is extracted with water from which

    Nano-sized Minerals of Elemental Selenium and

    Nano-sized Minerals of Elemental Selenium and Tellurium Formed by Bacterial Dissimilatory Reduction of Se- and Te-Oxyanions.

    Microdetermination of selenium, tellurium, and

    A method is described for determination of selenium, tellurium and arsenic in organic compounds. Decomposition is carried out either by oxygen-flask combustion or by wet digestion with sulphuric and nitric acids. The analysis is completed by argentometric titration, at pH 8–8.5, of the selenite, tellurite or arsenate formed.

    Selenium, Tellurium and Polonium ScienceDirect

    1997-1-1 · The main source of selenium and tellurium is the anode slime deposited during the electrolytic refining of copper. Selenium is also recovered from the sludge accumulating in sulfuric acid plants and from electrostatic precipitator dust collected during the processing of copper and lead.

    Selenium- and tellurium-centred radicals IOPscience

    2007-10-17 · Abstract. The principal types of radicals formed in various types of initiation of the reactions of organic compounds of selenium and tellurium, the methods for their detection, and their properties and reactivities are examined. The bibliography includes 98 references. Export citation and abstractBibTeXRIS. References.

    Selenium or Tellurium as Eutectic Accelerators for

    2020-7-2 · Based on this, delicately designed SEI films can be formed on the surface of S cathodes to prevent solvent molecules from contacting with active materials, thus avoiding the dissolution or generation of polysulfides. Here, both in situ SEIs and artificial SEIs have been well studied, and without limitations on the S content.

    Selenium/tellurium containing polymer materials in

    2015-12-1 · Tellurium was so named by Martin Heinrich Klaproth in 1798, after tellus, the Latin word for earth . In the past few centuries, people have come to understand that, despite their strange odor, selenium and tellurium compounds do possess unique and interesting properties.

    Polyatomic Cations of Sulphur, Selenium and Tellurium

    2016-9-19 · Metal Called Tellurium ..,read at a public sitting of the Academy of Science at Berlin in 1798. He pointed out that when tellurium is dissolved in concentrated sulphuric acid, a beautiful crimson red colour is formed. This colour disappears on heating and a white oxide of tellurium is depo­ sited.

    Nano-sized Minerals of Elemental Selenium and

    Request PDF Nano-sized Minerals of Elemental Selenium and Tellurium Formed by Bacterial Dissimilatory Reduction of Se and Te-Oxyanions Selenium and tellurium

    Nano-sized Minerals of Elemental Selenium and

    Selenium and tellurium are both Group 16 elements that have curious opto-electrical properties making them of potential interest for photovoltaic applications. The process of dissimilatory reduction of selenate and selenite by 3 diverse species of anaerobes, Bacillus selenitireducens, Sulfurospirillum barnesii, and Selenihalanaerobacter shriftii resulted in the accumulation of many uniformly

    Selenium- and tellurium-centred radicals NASA/ADS

    The principal types of radicals formed in various types of initiation of the reactions of organic compounds of selenium and tellurium, the methods for their detection, and their properties and reactivities are examined. The bibliography includes 98 references.

    Microdetermination of selenium, tellurium, and

    A method is described for determination of selenium, tellurium and arsenic in organic compounds. Decomposition is carried out either by oxygen-flask combustion or by wet digestion with sulphuric and nitric acids. The analysis is completed by argentometric titration, at pH 8–8.5, of the selenite, tellurite or arsenate formed. Halogens can often be determined simultaneously, and procedures are

    Selenium/tellurium containing polymer materials in

    2015-12-1 · Introduction. Selenium was discovered in 1817 by the Swedish scientist Jöns Jacob Berzelius, one of the founders of modern chemistry, who named it after selene, the Greek word of moon .Located right below selenium in the chalcogen group of the period table is its congener tellurium, which was actually discovered 35 years earlier, in 1782 by Franz-Joseph Müller von Reichenstein.

    Selenium or Tellurium as Eutectic Accelerators for

    2020-7-2 · Lithium (Li)/sodium (Na)–sulfur (S) batteries are considered to be competitive candidates for the next-generation energy storage devices due to ultrahigh theoretical energy densities and potential low costs. However, the insulating nature of S and dissolution of intermediate polysulfides hinder the development. Here, the use of selenium (Se) or tellurium (Te) as eutectic accelerators in S

    Phosphorus, Selenium, Tellurium, and Sulfur

    2001-4-16 · Selenium and most of its compounds are readily absorbed by oral intake or by breathing. Dermal exposure generally does not result in elevated selenium blood concentration. After absorption, high concentrations are found in the liver and kidney. In humans, dimethylselenide is formed and may account for the garlic odor of the breath.

    Sulfur, Selenium and Tellurium

    2017-9-19 · 3,3-Bis(hydroxyaryl)-3H-2,1-benzoxathiole S,S-dioxides, formed by condensation of o-sulfobenzoic acid with phenols or related compounds. Cf. phthaleins. E.g. sulfonylamines:* Compounds having the structure RN=S(=O) 2. NOC Rule C-661.5. (Indexed by Chemical Abstracts Service at the heading sulfimide.)

    What is a selenium ion called? AskingLot

    2020-5-20 · Is Selenium a cation or anion? The nonmetals arsenic (As), tellurium (Te) and selenium (Se) are also named like the transition metals, and can form either cations or anions. Rule 2: anions. The anion name is formed from the name of the element, but

    9.1: The Group 16 Elements- The Chalcogens

    2020-9-8 · Selenium also exists in three different deep-red crystalline monoclinic forms, which are composed of Se8 molecules, similar to many allotropes of sulfur. Unlike sulfur, however, selenium does not undergo the changes in viscosity when heated. Tellurium is a crystalline metal with a triginal structure (a = 4.4572 Å, c = 5.929 Å).

    Polyatomic Cations of Sulphur, Selenium and Tellurium

    2016-9-19 · Metal Called Tellurium ..,read at a public sitting of the Academy of Science at Berlin in 1798. He pointed out that when tellurium is dissolved in concentrated sulphuric acid, a beautiful crimson red colour is formed. This colour disappears on heating and a white oxide of tellurium is depo­ sited.

    Selenium- and tellurium-centred radicals IOPscience

    2007-10-17 · The principal types of radicals formed in various types of initiation of the reactions of organic compounds of selenium and tellurium, the methods for their detection, and their properties and reactivities are examined. The bibliography includes 98 references.

    Toxicology of Selenium and Tellurium and Their

    @article{osti_4839340, title = {Toxicology of Selenium and Tellurium and Their Compounds}, author = {Cerwenka, Edward A. and Cooper, W. Charles}, abstractNote = {A comprehensive survey of the toxicological properties of selenium and tellurium and their compounds is presented. Although selenium has been used commercially for many years with no long-term systemic effects on industrial workers

    A-selenium-tellurium photosensitive member and

    The a-selenium-tellurium photosensitive member according to the present invention comprises an electric charge injection preventive layer, an a-selenium-tellurium mixed vacuum evaporation layer of 0.03-0.2 μm thick having tellurium concentration within the range of 20-50 wt % with uniform concentration on the deposited surface, and an electric charge transport layer, and these three layers

    Selenium Umicore

    Berzelius discovered selenium in 1817 in the dusts formed in the lead chambers of a sulphuric acid plant. He found the element associated with tellurium (after the Latin tellus, earth) and called it selenium (after the Greek σελενη, moon).

    SELENIUM, TELLURIUM, ARSENIC AND ANTIMONY

    2007-6-7 · 637 § E-mail address: [email protected] The Canadian Mineralogist Vol. 40, pp. 637-650 (2002) SELENIUM, TELLURIUM, ARSENIC AND ANTIMONY CONTENTS OF PRIMARY MANTLE SULFIDES KÉIKO H. HATTORI§ Department of Earth Sciences, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada

    Sulfur, Selenium and Tellurium

    2017-9-19 · 3,3-Bis(hydroxyaryl)-3H-2,1-benzoxathiole S,S-dioxides, formed by condensation of o-sulfobenzoic acid with phenols or related compounds. Cf. phthaleins. E.g. sulfonylamines:* Compounds having the structure RN=S(=O) 2. NOC Rule C-661.5. (Indexed by Chemical Abstracts Service at the heading sulfimide.)

    9.1: The Group 16 Elements- The Chalcogens

    2020-9-8 · Selenium also exists in three different deep-red crystalline monoclinic forms, which are composed of Se8 molecules, similar to many allotropes of sulfur. Unlike sulfur, however, selenium does not undergo the changes in viscosity when heated. Tellurium is a crystalline metal with a triginal structure (a = 4.4572 Å, c = 5.929 Å).

    Tellurium-Containing Polymer Micelles: Competitive

    2019-5-26 · Tellurium-containing nanoparticles for controlled delivery of cisplatin based on coordination interaction. RSC Advances 2016, 6 (96),94033-94037. DOI: 10.1039/C6RA19768J. Wei Cao, Lu Wang, Huaping Xu. Selenium/tellurium containing polymer materials in nanobiotechnology.

    2D selenium allotropes from first principles and

    2019-3-29 · On the other hand, for selenium, the uniform bond length 2.35 Å before optimization changes to l 1 = 2.40 Å, l 2 = 2.40 Å and l 3 = 2.37 Å, which is similar to tellurium. However, the central selenium atoms are restrained to their respective chains, without being shared equally by adjacent chains.

    Polyatomic Cations of Sulphur, Selenium and Tellurium

    2016-9-19 · Metal Called Tellurium ..,read at a public sitting of the Academy of Science at Berlin in 1798. He pointed out that when tellurium is dissolved in concentrated sulphuric acid, a beautiful crimson red colour is formed. This colour disappears on heating and a white oxide of tellurium is depo­ sited.

    Role of Copper, Zinc, Selenium and Tellurium in the

    2003-5-1 · Selenium and tellurium: reduction of hydroperoxides and peroxynitrite. Ebselen is a GPx mimic not only with respect to peroxidase activity . Similar to GPx (vide infra), it reacts efficiently with peroxynitrite and exhibits the highest second-order rate constant known thus far for a low-molecular-weight compound with peroxynitrite (33, 34).

    Simultaneous speciation of inorganic selenium and

    A new method was developed for the simultaneous determination of inorganic tellurium and selenium species in waters by inductively coupled plasma mass spectrometry (ICP-MS) following selective solid-phase extraction (SPE) separation.Under acidic conditions, only selenium(IV) and tellurium(IV) formed complexes with ammonium pyrrolidine dithiocarbamate (APDC), and the complexes were completely

    Toxicology of Selenium and Tellurium and Their

    @article{osti_4839340, title = {Toxicology of Selenium and Tellurium and Their Compounds}, author = {Cerwenka, Edward A. and Cooper, W. Charles}, abstractNote = {A comprehensive survey of the toxicological properties of selenium and tellurium and their compounds is presented. Although selenium has been used commercially for many years with no long-term systemic effects on industrial workers

    Sulfur, Selenium and Tellurium

    2017-9-19 · 3,3-Bis(hydroxyaryl)-3H-2,1-benzoxathiole S,S-dioxides, formed by condensation of o-sulfobenzoic acid with phenols or related compounds. Cf. phthaleins. E.g. sulfonylamines:* Compounds having the structure RN=S(=O) 2. NOC Rule C-661.5. (Indexed by Chemical Abstracts Service at the heading sulfimide.)

    Selenium Umicore

    Berzelius discovered selenium in 1817 in the dusts formed in the lead chambers of a sulphuric acid plant. He found the element associated with tellurium (after the Latin tellus, earth) and called it selenium (after the Greek σελενη, moon).

    A-selenium-tellurium photosensitive member and

    The a-selenium-tellurium photosensitive member according to the present invention comprises an electric charge injection preventive layer, an a-selenium-tellurium mixed vacuum evaporation layer of 0.03-0.2 μm thick having tellurium concentration within the range of 20-50 wt % with uniform concentration on the deposited surface, and an electric charge transport layer, and these three layers

    SELENIUM, TELLURIUM, ARSENIC AND ANTIMONY

    2007-6-7 · 637 § E-mail address: [email protected] The Canadian Mineralogist Vol. 40, pp. 637-650 (2002) SELENIUM, TELLURIUM, ARSENIC AND ANTIMONY CONTENTS OF PRIMARY MANTLE SULFIDES KÉIKO H. HATTORI§ Department of Earth Sciences, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada

    Got Selenium? FEMS Microbiology Ecology Oxford

    2020-5-25 · Strain MLTeJB also formed Te(0) nanorods and nanorosettes, much like strain MLS10. The broader aspects of tellurium biogeochemistry, including its possible microbiological cycling, recently appeared as a scholarly review (Missen et al. 2020).

    2D selenium allotropes from first principles and

    2019-3-29 · On the other hand, for selenium, the uniform bond length 2.35 Å before optimization changes to l 1 = 2.40 Å, l 2 = 2.40 Å and l 3 = 2.37 Å, which is similar to tellurium. However, the central selenium atoms are restrained to their respective chains, without being shared equally by adjacent chains.