Use of a Mixing Chamber for Sample Preparation and Multiple Collection in Sequential Injection Analysis: Determination of Sulfate in Wines

Silva, Helena R.; Segundo, Marcela A.; Rangel, António O. S. S.

Publication

Use of a Mixing Chamber for Sample Preparation and Multiple Collection in Sequential Injection Analysis: Determination of Sulfate in Wines

2003Journal article

dc.contributor.author	Silva, Helena R.
dc.contributor.author	Segundo, Marcela A.
dc.contributor.author	Rangel, António O. S. S.
dc.date.accessioned	2011-10-22T17:41:33Z
dc.date.available	2011-10-22T17:41:33Z
dc.date.issued	2003
dc.description.abstract	A sequential injection system for determination of sulfate in wines was developed. It was based on the formation of BaSO4, measured turbidimetrically at 420 nm. As sample dilution and acidification were required, both sample and acid were sent to a mixing chamber placed in a lateral port of the selection valve; after thorough mixing, up to six aliquots could be drawn and analyzed. A linear calibration curve was established using 10% v/v ethanol standards with concentrations between 300 and 1500 mg L-1 of K2SO4. The results obtained by the present methodology were statistically comparable with those furnished by the reference procedure, with relative deviations < 3.5%. The sample frequency was about 5 samples per h with relative standard deviations (RSD) < 10%.	por
dc.description.version	info:eu-repo/semantics/publishedVersion
dc.identifier.citation	SILVA, Helena R. ; SEGUNDO, Marcela A. ; RANGEL, António O. S. S. - Use of a Mixing Chamber for Sample Preparation and Multiple Collection in Sequential Injection Analysis: Determination of Sulfate in Wines. Journal of the Brazilian Chemical Society. ISSN 0103-5053. Vol. 14, n.º1 (2003), p. 59-64	por
dc.identifier.doi	10.1590/S0103-50532003000100010
dc.identifier.uri	http://hdl.handle.net/10400.14/6870
dc.language.iso	eng	por
dc.peerreviewed	yes	por
dc.publisher	Sociedade Brasileira de Química	por
dc.rights.uri	http://creativecommons.org/licenses/by-nc/4.0/
dc.subject	Sequential injection	por
dc.subject	Mixing chamber	por
dc.subject	Turbidimetry	por
dc.subject	sulfate	por
dc.subject	Wine	por
dc.title	Use of a Mixing Chamber for Sample Preparation and Multiple Collection in Sequential Injection Analysis: Determination of Sulfate in Wines	por
dc.type	journal article
dspace.entity.type	Publication
person.familyName	Segundo
person.familyName	Santos Silva Rangel
person.givenName	Marcela
person.givenName	António Osmaro
person.identifier.ciencia-id	0A14-B7A6-E805
person.identifier.ciencia-id	D61D-7CFB-178A
person.identifier.orcid	0000-0003-2938-0214
person.identifier.orcid	0000-0002-6486-8947
person.identifier.rid	A-1009-2010
person.identifier.scopus-author-id	6602384941
person.identifier.scopus-author-id	7004827387
rcaap.rights	openAccess	por
rcaap.type	article	por
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