Speciation of manganese in tea leaves and tea infusions


Ozdemir Y., Gucer S.

ANALYTICAL LETTERS, vol.31, no.4, pp.679-689, 1998 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 31 Issue: 4
  • Publication Date: 1998
  • Doi Number: 10.1016/s0308-8146(97)00071-x
  • Journal Name: ANALYTICAL LETTERS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.679-689
  • Bursa Uludag University Affiliated: No

Abstract

A speciation scheme was developed for identification of the chemical forms of manganese in tea leaves and tea infusions. The range of manganese in five different groups of tea leaves was found to be 1107-2205 mu g/g on a dry basis. It was noted that 30.0% of Mn was passed into the water that was present in the form of Mn(II), and also 2.5% of Mn was found as the total organic bound fraction and passed into the various solvents.