A simple Flow Injection-Spectrophotometric determination of copper (II)‎ using 4- (6-bromo-2- benzothiazolylazo)‎ pyrogallol as chromogenic agent

الملخص EN

A simple and facial flow injection method coupled with spectrophotometer detection was developed to determination of copper (II).

The FIA system based on the reaction of Copper (II) with 4-6-bromo-2-benzothiazolylazo) pyrogallol (4-Br-BTAP) at pH 5.8 with an absorption maximum at 570 nm.

The optimum FIA variables were investigated.

The proposed method has a linear calibration range 0.06-0.7 μg.mL-1 of copper (II) with the regression whereas the observed detection limit was 0.008 μg.mL-1 and the percentage of recovery of 103.64 %.

The proposed method was shown good precision with relative standard deviations was 0.96 %.

The sampling frequency was 120 determinations per hour.

The method has been applied to the determination of copper in filling and metallic wire.