Ion exchange method for rapid determination of alkalinity of water-soluble tea ash containing high levels of manganese
Qureshi, S.Z.; Najib, F.M.; Mohammed, F.A.
Journal - Association of Official Analytical Chemists 63(3): 460-461
1980
ISSN/ISBN: 0004-5756 PMID: 7430031 Document Number: 166538
An ion exchange method to determine the alkalinity of water-soluble tea ash containing high levels of manganese is described. A chromatographic column containing a strong cation exchange resin (20–50 mesh) in Na+ form, with a bed volume of 5 mL is used. The present ion exchange method is compared to pH titrations and also to the official AOAC methods (31.012, 31.015, 31.016). Results with the new method are accurate and precise.