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A Comparative Investigation on Efficacy of Two Methodologies of Solid Phase Extraction for Separation and Pre‐Concentration of Trace Copper in Aqueous Samples Prior to Flame Atomic Absorption Spectrometric Determination
Author(s) -
NoeiAghaei Mohammad Amin,
Mohammadhosseini Majid,
Zamani Hassan Ali,
Nekoei Mehdi
Publication year - 2010
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.201000054
Subject(s) - chemistry , copper , sorbent , detection limit , aqueous solution , solid phase extraction , extraction (chemistry) , analytical chemistry (journal) , chromatography , volumetric flow rate , trace amounts , phase (matter) , absorption (acoustics) , adsorption , medicine , physics , alternative medicine , organic chemistry , quantum mechanics , pathology , acoustics
This report describes the capability of two facile, sensitive and concentrative methods for quantification of sub‐ppm levels of copper in different solutions using octadecyl silica bonded phase membrane (OSPM) disks. The first standpoint is based on introduction a homogenized miscellaneous solution of copper‐1‐(2‐pyridylazo)‐2‐naphtol (PAN) to the surface of an OSPM disk. The second perspective is the usual manner and is performed by impregnation or modification of the sorbent surface. All the affecting experimental variables such as pH, amount of modifier, eluent type, concentration of each metal and ligand, surfactant type, sample and eluent flow‐rate, time and disk capacity are also tested. The results reveal that the first way is considerably more time consuming. However, the second method possesses high break‐through volume (2000 mL) and lower detection limit (0.01 ng mL −1 ). Both the methods have been successfully applied for isolation and determination of trace copper in different aqueous and real samples.