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Atomic Absorption Spectrophotometric Determination of Copper (I) after Adsorption of its 4′‐( p ‐Methoxyphenyl)‐2, 2′:6′, 2″‐Terpyridine Tetraphenylborate Ion‐Associated Complex on Microcrystalline Naphthalene
Author(s) -
Lin JennLin,
Satake Masatada
Publication year - 1985
Publication title -
journal of the chinese chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.329
H-Index - 45
eISSN - 2192-6549
pISSN - 0009-4536
DOI - 10.1002/jccs.198500019
Subject(s) - tetraphenylborate , chemistry , microcrystalline , terpyridine , copper , absorbance , naphthalene , dimethylformamide , adsorption , inorganic chemistry , analytical chemistry (journal) , ion , chromatography , metal , organic chemistry , solvent , crystallography
A new atomic absorption spectrophotometric method has been developed for the trace determination of copper after adsorption of its 4′‐( p ‐methoxyphenyl)‐2, 2′:6′,2″‐terpyridine tetraphenylborate ion‐associated complex on microcrystalline naphthalene. This complex is adsorbed on microcrystalline naphthalene in the p H range 0.5‐11.0 by shaking for a few seconds. The solid mass so formed is separated by filtration, dissolved in dimethylformamide and the absorbance is measured at 324.7 nm . Beer's law is obeyed in the concentration range 5.0‐60.0 μg of copper in 10 ml of the final dimethylformamide solution. The replicate determinations of a sample containing 30 μg of copper gave a mean absorbance of 0.171 with a standard deviation of 0.0019 and a relative standard deviation of 1.11%. The method has been applied to the determination of copper in certain standard reference materials.