Antimony determination and speciation by multisyringe flow injection analysis with hydride generation-atomic fluorescence detection

The linear range and the detection limit (3sb/S) of the proposed technique were 0.2-5.6 μg l−1 and 0.08 μg l−1, respectively. A sample throughput of 18 samples per hour (corresponding to 80 injections per hour) was achieved. The relative standard deviation for 18 independent measurements was 4.6%. This technique was validated by means of reference solid and water materials with good agreement with the certified values. Satisfactory results for speciation of Sb(III) and Sb(V) by means of the developed technique were obtained.