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Study on Preconcentration of Trace Copper Using Microcrystalline Triphenylmethane Loaded with Malachite Green
Author(s) -
Liang Yong,
Zhao XiaoHong,
Li QuanMin,
Cui FengLing,
Liu GuoGuang
Publication year - 2007
Publication title -
chinese journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 1001-604X
DOI - 10.1002/cjoc.200790097
Subject(s) - chemistry , microcrystalline , malachite green , triphenylmethane , copper , malachite , relative standard deviation , adsorption , detection limit , nuclear chemistry , analytical chemistry (journal) , chromatography , organic chemistry , crystallography
The paper describes a novel method for copper preconcentration using microcrystalline triphenylmethane loaded with malachite green prior to the determination by the flame atomic absorption spectrometry (FAAS). Under the optimum conditions, Cu(II) can be totally adsorbed on the surface of microcrystalline triphenylmethane, and completely separated from Pb(II), Cd(II), Co(II), Cr(III), Ni(II), Mn(II), Fe(III) and Al(III) by controlling acidity. The preconcentration factor of this proposed method is 200. The recovery is in a range of 97.5%–105%. The relative standard deviation (RSD) is not beyond 3.0%. The proposed method has been successfully applied to the determination of trace copper in various water samples with satisfactory results.