Determination of total contents of transition metals in selected granular black teas marketed in Poland

Uproszczony widok
dc.contributor.authorSykuła, Anna
dc.contributor.authorBrodowska, Katarzyna
dc.contributor.authorWiędłocha, Marzenna
dc.date.accessioned2016-02-02T10:47:12Z
dc.date.available2016-02-02T10:47:12Z
dc.date.issued2014
dc.description.abstractThe total contents of metals in three granulated black tea samples marketed in Poland were determined. Four elements consisting transition metals (Ni, Cu, Zn and Fe) were analyzed using flame atomic absorption spectrophotometry (FAAS). All examined tea brands contain considerable contents of the studied transition metals. Among the tested transition metals Fe (242-589 mg kg-1) was the most abundant one in the granular black tea imported from India. The highest value of Fe was analyzed in the cheapest tea, the smallest in the most expensive. The other metals are less abundant than Fe, their values varied from 8.50-8.90 for Ni, 7.80-10.4 for Cu and 8.13-12.6 for Zn mg kg-1. The accuracy of the proposed method was assessed by determining the recovery of metals from analyzed tea samples using the standard addition method. Recovery assays of nickel, copper, zinc and iron were demonstrated satisfactory, mean recoveries 99.29, 100.31, 99.94 and 99.79 %, respectively.en_EN
dc.formatapplication/pdf
dc.identifier.citationBiotechnology and Food Science, Vol. 78, no. 1, pages 45-52
dc.identifier.urihttp://www.bfs.p.lodz.pl/
dc.language.isoenen_EN
dc.publisherWydawnictwa Politechniki Łódzkiejpl_PL
dc.publisherLodz University of Technology. Pressen_EN
dc.relation.ispartofseriesZeszyty Naukowe Politechniki Łódzkiejpl_PL
dc.relation.ispartofseriesBiotechnology and Food Scienceen_EN
dc.subjecttransition metalen_EN
dc.subjectgranular teaen_EN
dc.subjectflame atomic absorption spectrometryen_EN
dc.subjecttransition metalen_EN
dc.subjectgranular teaen_EN
dc.subjectflame atomic absorptionen_EN
dc.subjectspectrometryen_EN
dc.subjectmetal przejściowypl_PL
dc.subjectherbata granulowanapl_PL
dc.subjectpłomieniowa absorpcja atomowapl_PL
dc.subjectspektrometriapl_PL
dc.titleDetermination of total contents of transition metals in selected granular black teas marketed in Polanden_EN
dc.typeArticleen_EN
dc.typeArtykułpl_PL

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