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Química Nova

Print version ISSN 0100-4042On-line version ISSN 1678-7064

Abstract

GANJALI, Mohammad Reza; POURJAVID, Mohammad Reza; HAJI-AGHA BABAEI, Leila  and  SALAVATI-NIASARI, Masoud. Ultra-trace monitoring of copper in environmental and biological samples by inductively coupled plasma atomic emission spectrometry after separation and preconcentration by using octadecyl silica membrane disks modified by a new schiff's base. Quím. Nova [online]. 2004, vol.27, n.2, pp.213-217. ISSN 0100-4042.  http://dx.doi.org/10.1590/S0100-40422004000200008.

Ultra-trace amounts of Cu(II) were separated and preconcentrated by solid phase extraction on octadecyl-bonded silica membrane disks modified with a new Schiff,s base (Bis- (2-Hydroxyacetophenone) -2,2-dimethyl-1,3-propanediimine) (SBTD) followed by elution and inductively coupled plasma atomic emission spectrometric detection. The method was applied as a separation and detection method for copper(II) in environmental and biological samples. Extraction efficiency and the influence of sample matrix, flow rate, pH, and type and minimum amount of stripping acid were investigated. The concentration factor and detection limit of the proposed method are 500 and 12.5 pg mL-1, respectively.

Keywords : copper; solid phase extraction; Shiff's base.

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