ionophoresisn.
/ʌɪˌɒnə(ʊ)fəˈriːsɪs/, U.S. /aɪˈɑnəfəˈrisəs/ 1. Medicine. = iontophoresis n.; (in later use also) the controlled movement of ions in tissue by electrical means.
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the world > health and disease > healing > medical treatment > treatment by electricity > [noun] > cataphoresis
cataphoresis1889
phoresis1902
ionization1905
iontophoresis1907
ionophoresis1910
1910 Jrnl. Adv. Therapeutics 28 55 Zinc has been more used for ionophoresis than any other ion. In rodent ulcer the zinc ions have a sedative action on the growth.
1937 Brit. Med. Jrnl. 3 July 2/2 Transcerebral bee-venom ionophoresis in cases of high blood pressure.
1963 Internat. Rev. Neurobiol. 5 231 The introduction of procaine hydrochloride by ionophoresis out of a microelectrode located in the vicinity of the cell.
1993 J. Walden et al. in S. Zschocke & E. J. Speckmann Basic Mechanisms EEG xiii. 222 For ionophoresis one barrel of the application pipette was filled with 2 mol/1 NaCl for current neutralization.
2007 J. M. Lackie Dict. Cell & Molecular Biol. (ed. 4) 268/1 To extrude the substances through the very fine electrode tips, either hydrostatic pressure (pressure injection) or electric currents (ionophoresis) is employed.
2. Biochemistry. Electrophoresis of very small ions.
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the world > matter > chemistry > organic chemistry > chemical processes or reactions > biochemical reactions and processes > [noun] > ionophoresis
ionophoresis1941
1941 Indian Jrnl. Physics 15 315 Undissociated salt molecules..are the exception to the general rule of electromigration and ionophoresis.
1956 Nature 25 Feb. 393/2 A number of primary aliphatic amines can readily be separated..by ionophoresis on paper at pH 7 using collidine acetate buffer.
1971 European Jrnl. Biochem. 19 125/1 Ionophoresis in the second dimension was carried out on an 85 × 45 cm sheet of DEAE-cellulose paper..in 7% formic acid.
2008 Inorganica Chimica Acta 361 2718/1 These linkage isomers are extremely similar and very efficient methods such as ionophoresis or ion exchange column chromatography..are required for their separation.
Derivatives
iˌonophoˈretic adj. [compare earlier iontophoretic adj.]
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the world > matter > chemistry > organic chemistry > chemical processes or reactions > biochemical reactions and processes > [adjective] > ionophoresis
ionophoretic1942
ionophoric1956
1942 Chem. Abstr. 36 5279 (title) Electrodialytic (ionophoretic) process for removing the bitter principles from lupine.
1949 E. P. Abraham & N. G. Heatley in H. W. Florey et al. Antibiotics I. ii. 106 An apparatus in which ionophoretic separation takes place in a slab of silica jelly, the substances under investigation being inlaid in a gutter at right angles to the length of the slab.
1975 Nature 20 Mar. 263/2 The base sequence of each radioactive oligonucleotide was determined from ionophoretic analysis of its products.
2001 J. Dempster Lab. Computer vii. 179/2 Studies of synaptic transmission may require the stimulation of a nerve or the application of neurotransmitters from an ionophoretic pipette.
iˌonophoˈretically adv. [compare earlier iontophoretically adv. at iontophoretic adj. Derivatives]
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1953 Science 4 Dec. 694/1 Nucleotides, the constituents of nucleic acids, have also been ionophoretically separated.
2001 M. R. Bennett Hist. Synapse x. 227 (caption) Quisqualate (20 mM in 150 mM NaCl) was applied ionophoretically..5 sec after each synaptic response was elicited.
This entry has been updated (OED Third Edition, March 2012; most recently modified version published online March 2022).
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