Semiquinone radicals generated from catecholamines by ultraviolet irradiation.

نویسندگان
چکیده

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Investigation of the production of free radicals in ultraviolet irradiation using SnO2:Eu nanoparticles

In studying the ultraviolet (UV) radiation, one of the important factors is the possibility of generating a variety of free radicals inside the body by these radiations. In this paper, a method of estimating the amount of hydroxyl radicals produced by ultraviolet rays was investigated using nanoparticles of tin oxide doped with uropium. In this method, the change in absorption intensity of meth...

متن کامل

Semiquinone Radicals from Oxygenated Polychlorinated Biphenyls: Electron Paramagnetic Resonance Studies

Polychlorinated biphenyls (PCBs) can be oxygenated to form very reactive hydroquinone and quinone products. A guiding hypothesis in the PCB research community is that some of the detrimental health effects of some PCBs are a consequence of these oxygenated forms undergoing one-electron oxidation or reduction, generating semiquinone radicals (SQ (*-)). These radicals can enter into a futile redo...

متن کامل

Quantification of Radicals Generated in a Sonicator

The hydroxyl radical (OH•) is a powerful oxidant produced as a consequence of cavitation in water. It can react nonspecifically in breaking down persistent organic pollutants in water into their mineral form. It can also recombine to form hydrogen peroxide which is very useful in water treatment. In this study, terephthalic acid (TA) and potassium iodide dosimetry were used to quantify and inve...

متن کامل

Production of Free Radicals from Adamantane by High Energy Irradiation

The nature and properties of radicals produced by the action of electron and ^-radiation on adamantane have been investigated. Radicals produced by irradiation at 77 °K are stable to around room temperature, while irradiation at the latter temperature yields well resolved spectra of species stable to about 130 °C. The significance of the latter, assigned as the 1-adamantyl radical, in the forma...

متن کامل

Ascorbic acid and glucose oxidation by ultraviolet A-generated oxygen free radicals.

PURPOSE To determine the relative rate of oxidation of ascorbic acid (ASA) and glucose under conditions used for glycation reactions in vitro and by ultraviolet A (UVA)-generated oxygen free radicals using human lens sensitizers. METHODS ASA and [14C]glucose were incubated in 0.1 M phosphate buffer, and the rate of oxidation was determined by absorbance at 265 nm and by thin-layer chromatogra...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Chemical and Pharmaceutical Bulletin

سال: 1977

ISSN: 0009-2363,1347-5223

DOI: 10.1248/cpb.25.75