Radiochemical studies on germanium and selenium. by Sheldon Landsberger

Cover of: Radiochemical studies on germanium and selenium. | Sheldon Landsberger

Published by University of Salford in Salford .

Written in English

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MSc thesis,Chemistry.

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Open LibraryOL21848025M

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Each monograph collects in one volume the pertinent information required for radiochemical work with an individual element or a group of closely related elements.

An expert in the radiochemistry of the particular element has written the monograph, following a. Table III shows that the selenium was isolated and the counting started within 5 min from stopping the irradiation. Conclusion The proposed method for the separation of selenium was shown to be a rapid and efficient method for the radiochemical isolation of radioisotopes of selenium, especially from arsenic and by: Radiochemical separation of americium, neptunium and plutonium was tested on model solution of evaporator concentrate sample for isolation of each of them for alpha-spectrometry analysis.

A rapid radiochemical separation of selenium from arsenic, germanium and zinc based on the precipitation of elemental selenium by NaHSO3 is discussed. Yiel The kinetics, separation characteristics of the process and chemical yield of Se and trace contaminants such as Zn, Ge and As were studied using nondispersive X-ray fluorescence by: 4.

A post-irradiation radiochemical separation technique was tested for the determination of selenium levels in diet samples, collected by using a duplicate portion technique, from both rural and urban population groups in Turkey. The technique involved sample irradiation, acid.

Unfortunately, this book can't be printed from the OpenBook. If you need to print pages from this book, we recommend downloading it as a PDF. Visit to get more information about this book, to buy it in print, or to download it as a free PDF. National Nuclear En. Ser., Div. IV., 9, Radiochemical Studies: The Fission Products, Book 3, McGraw-Hill Book Co., New York, Absence of long-lived selenium in fission.

Search for Se Radiochemical Studies: The Fission Products, Book 2, p. – A Radiochemical studies on germanium and selenium. book study of fission yields in the region of shell Author: Jaromír Malý, Jaroslav Kutzendörfer, Vojtěch Machaáček, Václav Kouřím, Václav Jeřábek.

In a study of 30 post surgical patients, over a pe- riod of weeks, Germanium Sesquioxide restored a variety of deviant blood parameters to their nor- mal ranges, including pH, pCO. 2, glucose, miner- als (sodium, potassium, calcium, chloride), triglyc- erides, cholesterol, bilirubin and uric acid.

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That’s why you are here. When I hear the term book, This famous saying always spins up in m. Answer to Arrange the following elements in order of increasing electronegativity: germanium, bromine, selenium, arsenic. The radiochemical processing of selenium often shows lack of reproducibility in reaction yields because of the various reactive oxidation states of selenium and close dependence on the physicochemical conditions of the by:   Organic Germanium and Cancer.

Here is Dr. Asai's book on germanium: Dr. Asai's Book. The key researcher for germanium, as far as I know, is Dr.

Sandra Goodman, PhD. Here are three relevant websites: Dr. Goodman's website with list of books, etc. Germanium Book. Her book used to be free online, but I am not sure it is still online. Selenium (t 1/2 = d) used as a Se tracer in column and batch studies was produced at the University of Missouri Research Reactor (MURR) via the 74 Se (n, γ) 75 Se reaction of an encapsulated 74 Se (as SeO 2; %) target, which was dissolved in 1 M HNO by: 9.

Determination of selenium in environmental standard reference materials by amma. coincidence method using lithium-drifted germanium detectors. Analytical Chemistry52 (4), DOI: /aca Kousaburo. Ohashi and Henry. by: Radiochemistry. Here are entered works on the chemical properties of radioactive substances and their use in chemical studies.

Works on the chemical effects of high energy radiation on matter are entered under Radiation chemistry. Works on the application of chemical techniques to the study of the structure and properties of atomic nuclei.

A no-carrier-added 72 Se/ 72 As radionuclide generator based on distillation. avoiding the addition of any selenium carrier. Radiochemical Studies Relevant to Cyclotron Production of the. Peng X, Lingxia Z, Schrauzer GN, Xiong G.

Selenium, boron, and germanium deficiency in the etiology of Kashin-Beck disease. Biol Trace Elem Res ; View abstract.

Radiochemistry of Selenium ki and G.W. Leddicotte Ismed,November Union Crmbide [email protected] Mining and Metals Division Research Center Tuxedo, New Yoyk.

Common names include germanium (Ge) and germanium sesquioxide. A study examined changes in rat fecal bacteria and found no correlation that Ge Author: Susan York Morris. Correction. Method for Determination of Selenium, Arsenic, Zinc, Cadmium, and Mercury in Environmental Matrices by Neutron Activation Analysis.

Analytical Chemistry47 (3), DOI: /aca Peter J Cumpson, Jose F Portoles, Naoko Sano, Anders J by: Organic Germanium A Novel Dramatic Immunostimulant Stephen A. Levine, Ph.D.1 The element germanium (Ge) atomic num atomic weighttends to pack into a lattice-like structure and displays the electrical conductivity of a semimetal.

Since the elements of similar atomic number are biologically-essentialFile Size: 41KB. Introduction. Selenium is a trace element that is naturally present in many foods, added to others, and available as a dietary supplement.

Selenium, which is nutritionally essential for humans, is a constituent of more than two dozen selenoproteins that play critical roles in reproduction, thyroid hormone metabolism, DNA synthesis, and protection from oxidative damage and infection [].

Purchase Fluorine Chemistry V5 - 1st Edition. Print Book & E-Book. ISBNBook Edition: 1. This work describes the primary radiochemical separation of no-carrier-added (nca) 72Se from cyclotron irradiated germanium targets and the development of a polystyrene type solid-phase extraction based 72Se/72As radionuclide generator, avoiding the addition of any selenium carrier.

The irradiated germanium target is dissolved in HFconc and. Study results for the prevention of liver cancer with selenium supplements were inconsistent and studies had an unclear risk of bias.

The results of the Nutritional Prevention of Cancer Trial (NPCT) and SELECT raised concerns about possible harmful effects of selenium supplements.

A method for the determination of arsenic, bismuth, germanium, lead, antimony, selenium, tin and tellurium by means of hydride generation is described. The hydrides are generated by adding the acidified sample to dilute (1 per cent.

/) sodium borohydride solution. The. This work describes the primary radiochemical separation of no-carrier-added (nca) Se from cyclotron irradiated germanium targets and the development of a polystyrene type solid-phase extraction based Se/As radionuclide generator, avoiding the addition of any selenium carrier.

The irradiated germanium target is dissolved in HFconc and. A number of articles reviewing autobatch processes [Mey90], continuous SISAK techniques [Ska90], continuous, gas-phase separation techniques [Ren90a], fast chemical separations for the study of short-lived nuclides [Ren90b], and rapid radiochemical procedures used for the study of neutron-deficient nuclides [Ham90] have appeared recently.

This work describes the primary radiochemical separation of no-carrier-added (nca) 72 Se from cyclotron irradiated germanium targets and the development of a polystyrene type solid-phase extraction based 72 Se/ 72 As radionuclide generator, avoiding the addition of any selenium carrier.

The irradiated germanium target is dissolved in HF conc Cited by: Germanium selenide is a chemical compound with the formula GeSe. It exists as black crystalline powder having orthorhombic (distorted NaCl -type) crystal symmetry; at temperatures ~ °C, it transforms into the cubic NaCl structure.

To grow GeSe crystals, GeSe powder is vaporized at the hot end Chemical formula: GeSe. Germanium is a semiconductor.

The pure element was commonly doped with arsenic, gallium or other elements and used as a transistor in thousands of electronic applications. Today, however, other semiconductors have replaced it.

Germanium oxide has a high index of refraction and dispersion. This makes it suitable for use in wide-angle camera. Seven NAS monographs are updated: radiochemistry of arsenic, radiochemistry of astatine, radiochemistry of beryllium, radiochemistry of magnesium, radiochemistry of nickel, radiochemistry of ruthenium, and radiochemistry of selenium.

Preparation of radioactive standards and routine analysis of radioactive samples by gamma spectroscopy are included. Safety of Germanium Ge Improves Immunity Following Surgery: The effect of 2-carboxyethylgermanium sesquioxide (Ge) as an interferon inducer on post-surgical immunosuppression was evaluated from the immuno-logical response augmented in canine neutrophils, macrophages, and peripheral blood lymphocytes, with a control group.

Professor Lehto's main research areas have been nuclear waste management and disposal, and environmental radioactivity studies. He has published scientific and technical papers and patents, and also published a book on the principles of radioactivity and radiochemistry in Finnish.

Scientists first understood the nutritional importance of selenium in the late 's when an important study linked liver disease to low selenium in the diet. The first of many studies indicating selenium inhibits the growth of cancer came from the National Institutes of Health (NIH) in It found a 50% decrease in the incidence of lung /5(13).

However, generally, a semiconductor is defined on the basis of electrical conductivity as under: A semiconductor is a substance which has resistivity (10−4 to Ωm) inbetween conductors and insulators e.g.

germanium, silicon, selenium, carbon etc. The reader may wonder, when a semiconductor is neither a good conductor nor an insulator, then. Direct determination of V, Cr, Ge and As in high-purity 20% hydrochloric acid V, Cr, Ge, As 12 Silicon wafer analysis by ICP-QQQ: Determination of phosphorus and titanium in a high silicon matrix P, Ti 14 Feasibility study of fluorine detection by ICP-QQQ F 38 Agilent ICP-QQQ Application Handbook > Search entire document 4.

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$ $ 4. 99 to buy Kindle Edition. The History of Selenium Research By Richard Morrill. Studies link low selenium intake with an increased risk of cancer and other problems.

Unfortunately, people in many countries fail to get enough selenium to optimize their health. This is partly due to the fact that the agricultural soil in many parts of the world is low in selenium, and. Radiochemistry is the chemistry of radioactive materials, where radioactive isotopes of elements are used to study the properties and chemical reactions of non-radioactive isotopes (often within radiochemistry the absence of radioactivity leads to a substance being described as.

1 Study of solubility of selenium in various solvents under solvothermal conditions Although selenium is generally described as insoluble in hand-books and texts, our experimental results showed that under solvothermal conditions it can dissolve in some solvents, such as ethanol, benzene, toluene, pyridine, carbon tetrachlorideFile Size: KB.Radiochemical neutron activation analysis for 36 elements in geological material: Au, Ag, Bi, Br, Cd, Cs, Ge, In, Ir, Ni, Os, Pd, Rb, Re, Sb, Se, Sn, Te, Tl, U, and Cited by: 1.Inorganic Chemistry easily surpasses its competitors in sheer volume and depth of information.

Readers are presented with summaries that ease exam preparation, an extensive index, numerous references for further study, six invaluable appendixes, and over tables that provide important data on elements at a quick in its st printing, Inorganic Chemistry provides an authoritative.

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