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Multi-syringe flow injection system for the determination of available phosphorus in soil samples

2005Journal article Restricted access
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dc.contributor.authorAlmeida, M. Inês G. S.
dc.contributor.authorSegundo, Marcela A.
dc.contributor.authorLima, José L. F. C.
dc.contributor.authorRangel, António O. S. S.
dc.date.accessioned2011-10-22T11:36:35Z
dc.date.available2011-10-22T11:36:35Z
dc.date.issued2005
dc.description.abstractConsidering the importance of monitoring the levels of nutrients present in soils and their availability to plants, an automatic methodology is proposed based on multi-syringe flow injection analysis (MSFIA) for the spectrophotometric determination of available phosphorus in soil extracts. This fully computerized flow technique allowed the development of a flow network where sample and reagents were intercalated and sent further towards the detection system. The colorimetric determination was based on the molybdenum blue method with ascorbic acid as reducing reagent and the Egner–Riehm method was applied to extract phosphorus from soil samples. A linear calibration curve was obtained between 0.75 and 15.0mgL-1. A determination frequency of 15 h-1 was achieved, with good repeatability for 12 consecutive injections of soil extracts (RSD<1.7%). The results obtained from 12 soil samples were statistically comparable to those attained by the usual batch method.por
dc.description.versioninfo:eu-repo/semantics/publishedVersion
dc.identifier.citationALMEIDA, M. Inês G. S... [et al.] - Multi-syringe flow injection system for the determination of available phosphorus in soil samples. International Journal of Environmental Analytical Chemistry. ISSN 0306-7319. Vol. 85, n.º 1 (2005), p. 51-62por
dc.identifier.doi10.1080/03067310512331324718
dc.identifier.urihttp://hdl.handle.net/10400.14/6795
dc.language.isoengpor
dc.peerreviewedyespor
dc.publisherTaylor & Francispor
dc.subjectMulti-syringe flow injection analysispor
dc.subjectAvailable phosphoruspor
dc.subjectSoilpor
dc.subjectSpectrophotometrypor
dc.titleMulti-syringe flow injection system for the determination of available phosphorus in soil samplespor
dc.typejournal article
dspace.entity.typePublication
person.familyNameGameiro de Sa Almeida
person.familyNameSegundo
person.familyNameLima
person.familyNameSantos Silva Rangel
person.givenNameMaria Ines
person.givenNameMarcela
person.givenNameJosé
person.givenNameAntónio Osmaro
person.identifierR-000-8FJ
person.identifier.ciencia-id0A14-B7A6-E805
person.identifier.ciencia-id4811-9AA9-D673
person.identifier.ciencia-idD61D-7CFB-178A
person.identifier.orcid0000-0002-5272-3468
person.identifier.orcid0000-0003-2938-0214
person.identifier.orcid0000-0002-8906-9826
person.identifier.orcid0000-0002-6486-8947
person.identifier.ridA-1009-2010
person.identifier.scopus-author-id6602384941
person.identifier.scopus-author-id10141079100
person.identifier.scopus-author-id7004827387
rcaap.rightsrestrictedAccesspor
rcaap.typearticlepor
relation.isAuthorOfPublicationa0e0a8f4-578a-4359-a6d2-8626e155ac83
relation.isAuthorOfPublication84c05a53-23fa-4f4b-b007-d1a5fc748d5a
relation.isAuthorOfPublication71f20aa3-d4ae-40c3-a9ef-27d88442d1e0
relation.isAuthorOfPublication467be022-fd9c-4549-aa48-48ebcc1098eb
relation.isAuthorOfPublication.latestForDiscovery71f20aa3-d4ae-40c3-a9ef-27d88442d1e0

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