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The determination of fluorine in coffee and tea using a microprocessor coupled with a fluoride ion‐selective electrode
Author(s) -
MOODY G. J.,
ONG B.,
QUINLAN K.,
RIAH A. H.,
THOMAS J. D. R.
Publication year - 1980
Publication title -
international journal of food science and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.831
H-Index - 96
eISSN - 1365-2621
pISSN - 0950-5423
DOI - 10.1111/j.1365-2621.1980.tb00946.x
Subject(s) - fluoride , analyser , electrode , microprocessor , ion selective electrode , chemistry , fluorine , ion , analytical chemistry (journal) , inorganic chemistry , chromatography , organic chemistry , electrical engineering , selectivity , engineering , catalysis
Summary The fluoride content of tea and coffee as normally brewed, and after Schöniger oxygen flask combustion, has been determined with a fluoride ion‐selective electrode coupled to a microprocessor analyser in two of its operational modes. Up to forty samples per hour can be assayed in the CONCN mode and the results compare favourably with the known addition (KA) back‐up mode.