Journal
JOURNAL OF HAZARDOUS MATERIALS
Volume 147, Issue 1-2, Pages 15-20Publisher
ELSEVIER
DOI: 10.1016/j.jhazmat.2006.12.044
Keywords
2-{[1-(2-Hydroxynaphthyl) methylidene] amino} benzoic acid (HNMABA); solid phase extraction; activated carbon; environmental and biological samples; flame atomic absorption spectrometry
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2-{ [1-(2-Hydroxynaphthyl) methylidene] amino} benzoic acid (HNMABA) was synthesized for solid phase extraction (SPE) to the determination of Co, Cu, Ni, Zn and Cd in environmental and biological samples by flame atomic absorption spectrophotometry (FAAS). These metals were sorbed as HNMABA complexes on activated carbon (AC) at the pH range of 5.0 +/- 0.2 and eluted with 6 ml of I M HNO3 in acetone. The effects of sample volume, eluent volume and recovery have been investigated to enhance the sensitivity and selectivity of proposed method. The effect of interferences on the sorption of metal ions was studied. The concentration of the metal ions detected after preconcentration was in agreement with the added amount. The detection limits for the metals studied were in the range of 0.75-3.82 mu g ml(-1). The proposed system produced satisfactory results for the determination of Co, Cu, Ni, Zn and Cd metals in environmental and biological samples. (c) 2007 Elsevier B.V. All rights reserved.
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