application of neutron activation analysis to the determination of copper in minerals

Application of neutron activation analysis to the determination of copper in minerals by H. P. Dibbs Download PDF EPUB FB2

Application of neutron activation analysis to the determination of copper in minerals. Ottawa, Dept. of Energy, Mines and Resources, Mines Branch, (OCoLC)   Neutron activation analysis and spectrophotometry were used for the determination of copper content in sera and cerebrospinal fluids of schizophrenic patients against control persons.

From the analytical data conclusions can be drawn for the psychotic state of the patients. Published: January Cited by: 5. Neutron activation analysis (NAA) is a state-of-the-art analytical technique used for identification of elements and determination of the elemental concentration in different applications.

With the development of accurate and fast gamma spectrometric techniques, advanced electronics and automation in data analysis, the method has gained active application Author: Maitreyee Nandy. Application of k0-method of neutron activation analysis for determination of trace elements in various mineral samples: a review Radojko Jacimovic, Trajce Stafilov, Vekoslava Stibilj, Milena Taseska, Petre MakreskiCited by: 3.

Data on the applicability of neutron activation analysis to determine various rare and trace elements and the isotopic abundance of some of them in natural samples are discussed as relevant to the solution of various geological and geochemical problems.

For the determination of minute amounts of elements from small weighed quantities of rocks and minerals a number of modifications of neutron Cited by: 2. However, neutron activation analysis allows high detectability for the quantification of trace elements in biological matrices (neutron activation analysis remains the best tool to determine.

Copper determination in standard materials by neutron activation and srafion nmrr anion-exchange resin. Analytica Chimica Acta91 (2), DOI: /S(01) Y. Koda. Determination of traces of ruthenium by neutron activation analysis using a polyethylene by: Neutron activation analysis applied to arsenic determination Bong Kyu Lee Iowa State University Follow this and additional works at: Part of theNuclear Engineering Commons This Dissertation is brought to you for free and open access by the Iowa State University Capstones, Theses and Dissertations at Iowa State.

Neutron activation analysis refers to a technique of analyzing materials for their elemental composition by use of neutrons. Neutrons, absorbed by the matter, activate elements into a state leading to new materials and radioactive decay of some of these newly formed materials.

The content of trace elements in iron minerals hematite, pyrite and chalcopyrite was determined [48] by instrumental neutron activation analysis (k 0 -INAA) and radiochemical neutron activation. Suggested Citation:"Principles of Neutron Activation Analysis."National Research Council.

Neutron Activation Techniques for the Measurement of Trace Metals in. A possibility of application of the neutron-activation analysis with the use of the californium source of neutrons for determining the content of fine-grained and extra-fine-grained gold in the technogenic objects including the bottom-ash waste of energy providers is : Oksana N.

Tsybulskaya, Aleksandr A. Yudakov, Veniamin V. Zheleznov, Sergey I. Ivannikov, Andrei V. Next to education and training, neutron activation analysis is the most widely used application of research reactors.

Almost any reactor operating at kilowatt of thermal power is capable of providing a sufficient neutron flux to irradiate samples for selective applications of this analysis technique. Neutron activation followed by γγ-coincidence measurements of 9–3 hr Eu is shown to be a convenient method for routine determination of europium in minerals and rocks.

In the concentration range 10– ppm the method is free of interference from other elements, and neutron shielding effects do not interfere seriously in the by: 6. rare metals in minerals concentrates and tailings, using k0 based instrumental neutron activation analysis” Au, Ag, were analysed in copper concentrates, Re in molybdenum concentrates and In and Ga in tails of zinc concentrates.

To this effect, two in house secondary reference materials, i.e. a copper concentrate for the determination of preciousAuthor: Blanca Torres, Pablo Mendoza, Eduardo Montoya, Paula Olivera, Patricia Bedregal, Marco Ubillús. Activation MethodActivation Method Ag(n,γ)Ag activity measurement: Ag(β-) Cd (t.

1/2 = d) Lithium. Copper Proton beam Neutron-cone. Ag Au. Determination of neutron. AbstractThe application of a Fast Neutron Activation Analysis (FNAA) technique on samples of pure gold, irradiated by a plasma focus of 7 kJ, has been investigated. The reaction was the inelastic scattering of neutrons, Au(n,n'γ) Au Size: 61KB.

application of NAA to research studies involving very large numbers of samples. CHARACTERISTICS OF NEUTRON ACTIVATION ANALYSIS Neutron activation analysis has become a mainstay of geochemical and biochemical trace element research because the technique possesses several important advantages.

(a) Substantial freedom from systematic. A method for trace elements determination in chalcopyrite, CuFeS 2, by k 0 -instrumental neutron activation analysis (k 0 -INAA) was proposed. To avoid the interference of iron and copper as matrix elements, methods for their separation were applied.

The copper interferences were eliminated by applying an electrolytic separation by: 5. The application of neutron activation analysis to quantitation of anions and cations in blood is discussed utilizing a flux of x 10/sup 8/ neutrons/cm/ sup 2/sec.

This flux can be obtained by the use of radium-beryllium sources, Van de Graaff-beryllium systems, and nuclear reactors. Neutron activation analysis (NAA) is the nuclear process used for determining the concentrations of elements in a vast amount of materials.

NAA allows discrete sampling of elements as it disregards the chemical form of a sample, and focuses solely on its nucleus. The method is based on neutron activation and therefore requires a source of sample is bombarded with neutrons.Activation analysis for copper and manganese in 10 mg samples machined from aluminum-base diffusion couples has been used in the study of ternary diffusion in the Al-Cu-Mn system.

The accuracy, economy and convenience of the method are considered to be very competitive with other methods for analysis of such small samples.The k 0-based neutron activation analysis (k 0-NAA) technique, developed in s, is being increasingly used for multielement analysis in a variety of matrices using reactor neutrons [].

In our research reactor, the k 0 -method was successfully developed using the Høgdahl formalism [ Cited by: