Determination of As, Sb and Hg in water samples by flow injection coupled HR CS ETAAS with an in situ hydride generator

This method has proven to have a high sensitivity with detection limits of 0.25 μg L−1, 0.003 μg L−1 and 0.22 μg L−1 for As, Sb and Hg, respectively. Besides, the proposed method was applied in the sequential determination of the 3 elements mentioned above with a sample throughput of about 16.7 h−1, thereby, reducing the time of analysis and the volume of reagents and sample required. This method was applied to determine the target elements in a TMDA 54.5 and TM 24.3 certified reference materials, and seawater collected from Malaga Bay. The results showed good agreement with the certified values.