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Rapid Measurement of Potassium Ion in Wheat Flour Using a FIA‐Ion Selective Electrode Based Sensing System
Author(s) -
Haginoya Ryuichi,
Nomura Yoko,
Sakai Kuniko,
Komatsu Takashi,
Nagao Seiichi,
Sakai Aki,
Henmi Hideaki,
Ito Satoshi,
Asano Yasukazu,
Karube Isao
Publication year - 1997
Publication title -
starch ‐ stärke
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.62
H-Index - 82
eISSN - 1521-379X
pISSN - 0038-9056
DOI - 10.1002/star.19970491007
Subject(s) - potassium , correlation coefficient , wheat flour , ion selective electrode , coefficient of variation , chemistry , flow injection analysis , ion , analytical chemistry (journal) , electrode , chromatography , food science , mathematics , biochemistry , detection limit , selectivity , statistics , organic chemistry , catalysis
The ash content of wheat flour is used to evaluate its quality but the conventional method of analysis takes several hours. This paper proposes using the potassium ion concentration of wheat flour samples instead of the ash content since the correlation between the two is very good (the correlation coefficient was 0.99). A flow injection analysis (FIA) system based on a potassium ion selective electrode took less than 10min per measurement with a coefficient of variation less than 3%.