Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.14/6448
Título: Merging zones standard addition technique for determination of copper in beer by flow injection atomic absorption spectrophotometry.
Autor: Fernandes, Sílvia M. V.
Rangel, António O. S. S
Lima, José L. F. C.
Data: 1998
Editora: AOAC International
Citação: FERNANDES, S.M.; RANGEL, António, O.S.S; LIMA, José L. F. C. - Merging zones standard addition technique for determination of copper in beer by flow injection atomic absorption spectrophotometry. Journal of AOAC International. ISSN 1060-3271. Vol. 81 n.º 3 (1998), p. 645-7
Resumo: A flow injection system for determination of copper in beer by atomic absorption spectrophotometry by the standard additions method is described. The manifold, based on the merging zone technique, prevents the burner head from clogging, as observed with the conventional reference method. With 5 standard additions, results are comparable with those of the reference method. Relative deviations were less than 5.8%, precision was better than 6.4%, and sampling rate was about 30 samples/ h. A less precise, less accurate, but faster procedure (75 samples/h) is possible with only 2 standard additions. The detection limit was 5 micrograms/L.
Peer review: yes
URI: http://hdl.handle.net/10400.14/6448
Aparece nas colecções:ESB - Artigos em revistas internacionais com Arbitragem / Papers in international journals with Peer-review

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