Abstract
A procedure is proposed for the direct determination of lead in sea water by electrothermal atomization high-resolution atomic absorption spectrometry. The effect of background interferences due to sea water matrix is eliminated using a mixed modifier barium nitrate–hydrofluoric acid. The optimum amount of the modifier matrix is 60 µg Ba (NO3)2 + 1.52 µg HF. The conditions of analysis are as follows: pyrolysis temperature 600°C, atomization temperature 1200°C. The limit of detection for the developed procedure is 0.0003 mg/L.
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ACKNOWLEDGMENTS
This work was performed using instrumentation of the “Arktika” Core Facility Center of the Northern (Arctic) Federal University (project RFMEFI59417X0013).
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Sobolev, N.A., Ivanchenko, N.L. & Kozhevnikov, A.Y. Direct Determination of Lead in Sea Water by High-Resolution Atomic Absorption Spectroscopy Using a Mixed Modifier Barium Nitrate–Hydrofluoric Acid. J Anal Chem 74, 444–448 (2019). https://doi.org/10.1134/S1061934819020126
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DOI: https://doi.org/10.1134/S1061934819020126