Fast And Direct Na And K Determination In Table, Marine, And Low-sodium Salts By X-ray Fluorescence And Chemometrics.

dc.creatorDa-Col, José A
dc.creatorBueno, Maria I M S
dc.creatorMelquiades, Fábio L
dc.date2015-Mar
dc.date2015-11-27T13:46:14Z
dc.date2015-11-27T13:46:14Z
dc.date.accessioned2018-03-29T01:23:39Z
dc.date.available2018-03-29T01:23:39Z
dc.identifierJournal Of Agricultural And Food Chemistry. v. 63, n. 9, p. 2406-12, 2015-Mar.
dc.identifier1520-5118
dc.identifier10.1021/jf504941z
dc.identifierhttp://www.ncbi.nlm.nih.gov/pubmed/25710102
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/202151
dc.identifier25710102
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1302384
dc.descriptionX-ray fluorescence (XRF) is a fast, low-cost, nondestructive, and truly multielement analytical technique. The objectives of this study are to quantify the amount of Na(+) and K(+) in samples of table salt (refined, marine, and light) and to compare three different methodologies of quantification using XRF. A fundamental parameter method revealed difficulties in quantifying accurately lighter elements (Z < 22). A univariate methodology based on peak area calibration is an attractive alternative, even though additional steps of data manipulation might consume some time. Quantifications were performed with good correlations for both Na (r = 0.974) and K (r = 0.992). A partial least-squares (PLS) regression method with five latent variables was very fast. Na(+) quantifications provided calibration errors lower than 16% and a correlation of 0.995. Of great concern was the observation of high Na(+) levels in low-sodium salts. The presented application may be performed in a fast and multielement fashion, in accordance with Green Chemistry specifications.
dc.description63
dc.description2406-12
dc.languageeng
dc.relationJournal Of Agricultural And Food Chemistry
dc.relationJ. Agric. Food Chem.
dc.rightsfechado
dc.rights
dc.sourcePubMed
dc.subjectNa
dc.subjectPls
dc.subjectX-ray Fluorescence
dc.subjectFundamental Parameter Method
dc.subjectLow-sodium Salt
dc.subjectTable Salt
dc.titleFast And Direct Na And K Determination In Table, Marine, And Low-sodium Salts By X-ray Fluorescence And Chemometrics.
dc.typeArtículos de revistas


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