Oxygen - Chemistry
Research News and Information

Monday, November 23, 2009

Zero-valent sulfur and metal speciation in sediment porewaters of freshwater lakes.

29 Sep 2009 We measured the aqueous solubility of rhombic sulfur and used this information to incorporate, in speciation codes, the thermodynamic constants reported in the literature for the formation of polysulfide complexes. Using the values of pH and total ... Read more...

Phototrophic biofilm activity and dynamics of diurnal Cd cycling in a freshwater stream.

29 Sep 2009 Diel cycles of dissolved cationic metal concentrations commonly occur in freshwater streams in apparent response to coincident cycles in water quality parameters (pH, O2, temperature). Hourly sampling of the Cd-contaminated Riou Mort (France) ... Read more...

Zero-valent aluminum for oxidative degradation of aqueous organic pollutants.

13 Sep 2009 Oxidative degradation of aquatic organic contaminants using zero-valent aluminum (ZVAl) in the presence of dissolved oxygen (O2) was investigated. The metal corrosion process in acidic conditions (pH < 4) was accompanied by electron transfer from ... Read more...

Latest indexed articles for 'Oxygen - Chemistry'

These are the very latest articles for this heading:

• Zero-valent sulfur and metal speciation in sediment porewaters of freshwater lakes. 29 Sep 2009
• Phototrophic biofilm activity and dynamics of diurnal Cd cycling in a freshwater stream. 29 Sep 2009
• Zero-valent aluminum for oxidative degradation of aqueous organic pollutants. 13 Sep 2009
• Resonance Raman spectra of an O2-binding H-NOX domain reveal heme relaxation upon mutation. 13 Sep 2009
• NO formation by a catalytically self-sufficient bacterial nitric oxide synthase from Sorangium cellulosum. 8 Sep 2009
• Donor-set-induced coordination sphere and oxidation-state switching in the copper complexes of O2S2X (X = S, O and NH) macrocycles. 5 Sep 2009
• Oxygen atom transfer reactions of iridium and osmium complexes: theoretical study of characteristic features and significantly large differences between these two complexes. 5 Sep 2009
• Molecular oxygen and sulfur reactivity of a cyclotriveratrylene derived trinuclear copper(I) complex. 5 Sep 2009
• Circularly polarized luminescence in enantiopure europium and terbium complexes with modular, all-oxygen donor ligands. 5 Sep 2009
• Characterization of two distinct adducts in the reaction of a nonheme diiron(II) complex with O2. 5 Sep 2009
• Stabilisation of a highly reactive bis(mu-oxo)dicopper(III) species at room temperature by electronic and steric constraint of an unconventional nitrogen donor ligand. 5 Sep 2009
• Heme cavity dynamics of photodissociated CO from ba3-cytochrome c oxidase: the role of ring-D propionate. Sep 2009
• Morphology and molecular mobility of fibrous hard alpha-keratins by 1H, 13C, and 129Xe NMR. Sep 2009
• What is important to prevent oxidative stress? A theoretical study on electron-transfer reactions between carotenoids and free radicals. Sep 2009
• Stereocontrolled synthesis of oxaspirobicycles via Prins-pinacol annulation. Sep 2009
• Importance of particulate biodegradable organic compounds in performance of full-scale biological phosphorus removal system. 30 Aug 2009
• [Biological function of some elements and their compounds. I. Oxygen--the element of life and death] 30 Aug 2009
• Multifunctional core-shell nanoparticles as highly efficient imaging and photosensitizing agents. 30 Aug 2009
• Accelerated oxidation of epinephrine by silica nanoparticles. 30 Aug 2009
• Lignosulfonate-modified electrodes: electrochemical properties and electrocatalysis of NADH oxidation. 30 Aug 2009

See a longer list of these articles.

Technical information about 'Oxygen'

Definition: An element with atomic symbol O, atomic number 8, and atomic weight 16. It is the most abundant element on earth and essential for respiration.

Chemical name: Oxygen

Registry Number: 7782-44-7

Descriptor UI: D010100

Alternative terms: Oxygen; Dioxygen;

Related Mesh Headings: Anoxia; Oxygen Isotopes; Oxygen Radioisotopes; Hyperoxia;

Allowable Qualifiers: administration & dosage; adverse effects; analysis; antagonists & inhibitors; blood; cerebrospinal fluid; classification; diagnostic use; economics; history; immunology; isolation & purification; metabolism; pharmacokinetics; pharmacology; physiology; poisoning; radiation effects; standards; supply & distribution; therapeutic use; toxicity; urine; chemistry; contraindications; agonists;

Tree Number: D01.268.185.550; D01.362.670;

History Note: 1963; for DIOXYGEN use OXYGEN (NM) 1980-2001

Technical Notes: O-16; /metab; consider also OXYGEN CONSUMPTION; /physiol for O2 in pulm resp process but tissue resp = OXYGEN CONSUMPTION; /ther use; consider also OXYGEN INHALATION THERAPY or HYPERBARIC OXYGENATION; /tox & /pois; consider also HYPEROXIA