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AbstractAbstract
[en] Having as an aim the utilization of atomic absorption method with flame's excitement, the limits of detection in water of six metals (Ag, Co, Cr, Cu, Ni, Zn) were determined in synthetical samples through atomic absorption spectroscopy. Techniques to optimize the data have been pointed out and presented their statistical treatment. By means of the routine and the addition methods three 'real' samples have also been analysed in order to determine the contents of Cu and Zn. Aiming a pre-concentration and by utilizing the 60Co obtained activating a sample of cobalt in the CDTN/NUCLEBRAS TRIGA MARK-I reactor, the retainement of this cobalt in ion exchange resin and the variation of the factor of elution within different concentration of HCl in water have been determined. The limits of detection are presented and so are the quantitative ones, with and without pre-concentration in an ion exchanger resin and latter elution. (Author)
[pt]
Com o objetivo de utilizacao do metodo de absorcao atomica com excitacao por chama foram determinados os limites de deteccao em agua por espectrofotometria de absorcao atomica, de seis metais (Ag, Co, Cr, Cu, Ni, Zn) em amostras sinteticas. Sao indicadas tecnicas para otimizacao dos dados e apresentado o tratamento estatistico dos mesmos. Foram tambem analisadas tres amostras 'reais', para a determinacao dos teores de Cu e Zn, utilizando-se tambem, alem do metodo de rotina, o metodo de adicao. Objetivando-se a pre-concentracao, e utilizando-se de 60Co obtido ativando-se uma amostra de cobalto no reator TRIGA MARK-I do CDTN/NUCLEBRAS, determinaram-se a retencao do cobalto em resina de troca ionica e a variacao do fator de eluicao com diferentes concentracoes de HCl em agua. Sao apresentados os limites de deteccao e os limites de determinacao quantitativa com e sem pre-concentracao em resina trocadora de ions e posterior eluicao. (Autor)Original Title
Determinacao de elementos metalicos em agua pela associacao das tecnicas de pre-concentracao por troca ionica e espectrofotometria de absorcao atomica
Primary Subject
Source
1981; 142 p; Tese (M.Sc.).
Record Type
Miscellaneous
Literature Type
Thesis/Dissertation
Report Number
Country of publication
BETA DECAY RADIOISOTOPES, BETA-MINUS DECAY RADIOISOTOPES, COBALT ISOTOPES, DISPERSIONS, ELEMENTS, HOMOGENEOUS MIXTURES, INTERMEDIATE MASS NUCLEI, ISOMERIC TRANSITION ISOTOPES, ISOTOPES, METALS, MINUTES LIVING RADIOISOTOPES, MIXTURES, NUCLEI, ODD-ODD NUCLEI, RADIOISOTOPES, SOLUTIONS, TRANSITION ELEMENTS, YEARS LIVING RADIOISOTOPES
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