Published January 1987 | Version v1
Journal article Metadata-only

Non destructive analysis on trace of elements in coal by ressonance neutron activation

Creators

  • 1. Instituto de Engenharia Nuclear, Rio de Janeiro (Brazil)
  • 2. Comissao Nacional de Energia Nuclear de Brasil, Rio de Janeiro

Description

Twenty-two elements were determined in Brazilian coal samples by resonance neutron activation technique. The detection limits and the uncertainties of the results show that the technique developed by the authors can be applied in simultaneous determinations of different elements mainly in complex matrix materials (Author)

Abstract (Portuguese)

Analisa-se a tecnica de ativacao com neutrons de ressonancia ja utilizada na determinacao de 22 elementos em amostras de carvoes brasileiros. A tecnica empregada foi a mesma desenvolvida pelos autores para a determinacao de uranio e torio em carvao mineral. As irradiacoes foram efetuadas no reator IEAR-1 do IPEN/CNEN - Sao Paulo, com um fluxo de neutrons termicos de 1,46 x 1013 n.cm-2.seg-1, razao de cadmio: 2,24 (para 197Au) e tempo de irradiacao de 8 horas. O estudo dos resultados demonstram que a tecnica e precisa, exata, sensivel e muito util na determinacao simultanea de varios elementos, principalmente em materiais de matriz complexa. (M.J.C.)

Additional details

Additional titles

Original title (Portuguese)
Analise nao destrutiva de tracos de elementos em carvao mineral por ativacao com neutrons de ressonancia

Publishing Information

Journal Title
Quim. Nova
Journal Volume
10
Journal Issue
1
Series
Quim. Nova.
Journal Page Range
42-44
ISSN
0100-4042
CODEN
QUNOD

INIS

Country of Publication
Brazil
Country of Input or Organization
Brazil
INIS RN
18075733
Subject category
S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
Descriptors DEI
BRAZILIAN CNEN; COAL; ELEMENTS; NEUTRON ACTIVATION ANALYSIS; NEUTRON FLUX; PERFORMANCE; QUANTITATIVE CHEMICAL ANALYSIS; SAMPLERS
Descriptors DEC
ACTIVATION ANALYSIS; BRAZILIAN ORGANIZATIONS; CARBONACEOUS MATERIALS; CHEMICAL ANALYSIS; ENERGY SOURCES; EQUIPMENT; FOSSIL FUELS; FUELS; LABORATORY EQUIPMENT; MATERIALS; NATIONAL ORGANIZATIONS; NONDESTRUCTIVE ANALYSIS; RADIATION FLUX