COLUMN CHROMATOGRAPHIC PRECONCENTRATION OF COPPER IN ALLOYS AND COMPLEX MATERIALS USING 9,10 PHENANTHRENEQUINONE MONOXIME SUPPORTED ON NAPHTHALENE

A solid chelating compound phenanthrenequinone monoxime PQM) supported on naphthalene provided a rapid and economical means of preconcentration and separation of copper from the aqueous samples. Copper forms a complex with PQM supported on naphthalene in the column at pH 6.1-8.4 with a flow rate of 1 ml/min. The metal complex and naphthalene are dissolved out from the column with 5 ml of DMF and the absorbance is measured at 470 nm against reagent blank. Beer's law is obeyed in the concentration range 0.6-9.6-mu-g of copper in 5 ml of DMF. The molar absorptivity and sensitivity are 6.3 x 10(4) L mol-1 cm-1 and 0.001-mu-g cm-2 respectively.