Publication
Spectrophotometric flow injection determination of total phosphorus in beer using on-line UV/thermal induced digestion
| dc.contributor.author | Fernandes, Sílvia M. V. | |
| dc.contributor.author | Lima, José L. F. C. | |
| dc.contributor.author | Rangel, António O. S. S. | |
| dc.date.accessioned | 2011-10-20T17:34:01Z | |
| dc.date.available | 2011-10-20T17:34:01Z | |
| dc.date.issued | 2000 | |
| dc.description.abstract | A flow injection system for the automatic determination of total phosphorus in beer is described. The developed manifold uses a two-stage photooxidation/thermal digestion procedure together with oxidizing and hydrolyzing reagents to convert all forms of phosphorus compounds to orthophosphate. Polyphosphates are hydrolyzed by acid and heat, and organo-phosphates are digested by UV-catalyzed peroxodisulfate oxidation. The orthophosphate formed is then spectrophotometrically determined by the phosphomolybdenum blue reaction, using stannous chloride as reducing agent. The results obtained for a set of 19 beer samples (with concentrations from 120 to 735 mg P/L) were in good agreement with the reference method, the maximum relative deviation found being 4.7%. Relative standard deviations for ten consecutive determinations were lower than 1.5%, and a detection limit of 1 mg P/L was achieved. | por |
| dc.description.version | info:eu-repo/semantics/publishedVersion | |
| dc.identifier.citation | FERNANDES, Sílvia M. V. ; LIMA, L. F. C. ; RANGEL, António O. S: S. - Spectrophotometric flow injection determination of total phosphorus in beer using on-line UV/thermal induced digestion. Fresenius Journal of Analytical Chemistry. ISSN: 0937-0633. Vol. 366 (2000), p.112–115 | por |
| dc.identifier.doi | 10.1007/s002160050020 | |
| dc.identifier.uri | http://hdl.handle.net/10400.14/6549 | |
| dc.language.iso | eng | por |
| dc.peerreviewed | yes | por |
| dc.publisher | Springer-Verlag | por |
| dc.title | Spectrophotometric flow injection determination of total phosphorus in beer using on-line UV/thermal induced digestion | por |
| dc.type | journal article | |
| dspace.entity.type | Publication | |
| person.familyName | Lima | |
| person.familyName | Santos Silva Rangel | |
| person.givenName | José | |
| person.givenName | António Osmaro | |
| person.identifier | R-000-8FJ | |
| person.identifier.ciencia-id | 4811-9AA9-D673 | |
| person.identifier.ciencia-id | D61D-7CFB-178A | |
| person.identifier.orcid | 0000-0002-8906-9826 | |
| person.identifier.orcid | 0000-0002-6486-8947 | |
| person.identifier.scopus-author-id | 10141079100 | |
| person.identifier.scopus-author-id | 7004827387 | |
| rcaap.rights | restrictedAccess | por |
| rcaap.type | article | por |
| relation.isAuthorOfPublication | 71f20aa3-d4ae-40c3-a9ef-27d88442d1e0 | |
| relation.isAuthorOfPublication | 467be022-fd9c-4549-aa48-48ebcc1098eb | |
| relation.isAuthorOfPublication.latestForDiscovery | 467be022-fd9c-4549-aa48-48ebcc1098eb |