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

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dc.contributor.authorSykuła, Anna
dc.contributor.authorBrodowska, Katarzyna
dc.contributor.authorWiędłocha, Marzenna
dc.date.accessioned2015-06-18T09:45:37Z
dc.date.available2015-06-18T09:45:37Z
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, 2014 Vol.78 nr 1 nr s. 45-52pl_PL
dc.identifier.issn2084-0136
dc.identifier.other0000039577
dc.identifier.urihttp://hdl.handle.net/11652/619
dc.language.isoenen_EN
dc.publisherWydawnictwo 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.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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