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Studies on the effect of non‐ionic surfactant micelles on color reactions: III. The effect of micelles on metal ion reactivity in the Fe(III)‐PAN‐Triton X‐100 system
Author(s) -
WenBin Qi,
BinYing Pu
Publication year - 1983
Publication title -
acta chimica sinica english edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 0256-7660
DOI - 10.1002/cjoc.19830010209
Subject(s) - chemistry , micelle , triton x 100 , reactivity (psychology) , pulmonary surfactant , absorption (acoustics) , ion , ether , metal ions in aqueous solution , inorganic chemistry , metal , ionic bonding , analytical chemistry (journal) , nuclear chemistry , organic chemistry , aqueous solution , medicine , biochemistry , physics , alternative medicine , pathology , acoustics
Fe(III) and PAN form Fe(PAN),OH complex in CHCl 3 extract which shows absorption maxima at 550 nm and 775 nm (log ε 550 ,= 4.06, log ε 775 = 4.08). In the Fc(III)‐PAN‐Triton X‐100 system, two complex species Fe(PAN) 2 + and/or Fe(PAN) 2 OH may be formed. Fe(PAN) 2 + possesses a strongly absorbing peak at 550 nm (log ε 550 = 4.36). In this paper the effect of Triton X‐100 micelles on the Fe(III)‐PAN color reaction has been investigated in detail. We consider that the high density of ether linkages in Triton X‐100 micelles concentrate hydrous Fe(III) ions and change their existing state. Moreover, the micelles not only raise the reactivity of Fe(III), but also enhance the rate of the color reaction.