resulting material has been characterised and employed as solid phase extractant for preconcentration
of Pb2+, Cu2+, Zn2+ and Cd2+ ions. The ions were identified by flame atomic absorption spectrometry
(FAAS). The enrichment factor of the proposed method was 100 and detection limits were found to be
4.5, 0.6, 0.2 and 0.5 ng mL_1 for Pb2+, Cu2+, Zn2+ and Cd2+ respectively.