الخلاصة

A simple method using flow injection has been developed for the determination of Cadmium ion (II)), based on the reaction the Cd(II) ion with the Dithizone as reagent in acid medium . A standard or sample solution was injected into the Cadmium(II) stream (flow rate 4.2 ml /min) which was then merged with Dithizone in dilute acid. Under the optimum conditions, a linear calibration graph was obtained over the range of 1-10 μg /ml and the detection limit was 0.0188 μg /ml (s/n = 3). The relative standard deviation of the proposed method calculated from 10 replicate injections of 10 μg /ml Cadmium (II) was 0.160%. The sample throughput was 60 h−1.