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Determination of sodium in processed foodstuffs using a bis(12‐crown‐4) derivative‐based poly(vinyl chloride) membrane electrode
Author(s) -
Saad Bahruddin Bin,
Devi Jashinta
Publication year - 1991
Publication title -
journal of the science of food and agriculture
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.782
H-Index - 142
eISSN - 1097-0010
pISSN - 0022-5142
DOI - 10.1002/jsfa.2740560316
Subject(s) - sodium , chemistry , magnesium , vinyl chloride , potassium , electrode , membrane , ion selective electrode , calcium , nuclear chemistry , inorganic chemistry , organic chemistry , selectivity , polymer , biochemistry , copolymer , catalysis
A poly(vinyl chloride) matrix membrane sodium selective electrode based on bis[(12‐crown‐4)ylmethyl] 2‐dodecyl‐2‐methylmalonate ((12‐crown‐4)yl = 1,4,7,10‐tetraoxacyclododecyl) was utilised for the determination of sodium in various foodstuffs such as soup stocks, instant noodle stocks and milk powders. Good agreement was obtained between the proposed electrode and flame photometric methods. Also, the electrode exhibits minimum interference from potassium, calcium, magnesium, iron(III), copper(II) and glucose, and from the synthetic colours tested.