[Determination of minerals and trace elements in selenium tea from the Enschi district, People's Republic of China, and in its infusions using inductively coupled plasma-atomic emission spectrometry, graphite furnace atomic absorption spectrometry and instrumental neutron activation analysis].

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  • Additional Information
    • Transliterated Title:
      Bestimmung der Mineralstoffe und Spurenelemente in Selen-Tee aus dem Enschi-Gebiet, VR China, und in dessen Aufguss mittels ICP-AES, GFAAS und INAA.
    • Source:
      Publisher: Springer Verlag Country of Publication: Germany NLM ID: 7509812 Publication Model: Print Cited Medium: Print ISSN: 0044-3026 (Print) Linking ISSN: 00443026 NLM ISO Abbreviation: Z Lebensm Unters Forsch Subsets: MEDLINE
    • Publication Information:
      Publication: Berlin : Springer Verlag
      Original Publication: Berlin. New York, Springer-Verlag [etc.]
    • Subject Terms:
      Minerals/*analysis ; Selenium/*analysis ; Tea/*chemistry ; Trace Elements/*analysis; China ; Neutron Activation Analysis ; Spectrophotometry, Atomic
    • Abstract:
      The Enschi district in Hubei province, Peoples Republic of China is geochemically one of the two seleniferous regions, producing both selenium (Se) black tea and the Se green tea. Three samples of green tea with different Se contents and one non-Se tea were analysed. The following mineral and trace elements were determined by inductively coupled plasma-atomic emission spectrometry (ICP-AES): K, Ca, Mg, Na, P, S, Al, Mn, Fe, Ba, Sr, Co, Ni, Cu, Zn, Mo, and Cr. Except for Mo, Co, and Cr, all other elements in infusions of the samples analysed were also measured, since their concentrations are lying over their detection limits. The Se content in the tea samples and in the infusions were measured with graphite furnace atomic absorption spectrometry (GFAAS). The accuracy of Se determination was tested by measuring untreated tea samples with instrumental neutron activation analysis (INAA). The Se content in the measured samples was 1 to 8.5 micrograms/g. In addition to Se, 17 other elements were measured in the tea samples and 14 others in the infusions. With this data the extractable part of this elements in the infusion were calculated. Up to 10% of the Se was found in a first infusion.
    • Accession Number:
      0 (Minerals)
      0 (Tea)
      0 (Trace Elements)
      H6241UJ22B (Selenium)
    • Publication Date:
      Date Created: 19931101 Date Completed: 19940201 Latest Revision: 20190920
    • Publication Date:
      20240829
    • Accession Number:
      10.1007/BF01202615
    • Accession Number:
      8273425