Percorrer por autor "Alves, Sheila"
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- Traceability statement for the determination of total chromium fraction in serpentine soils by atomic absorption spectrometryPublication . Trancoso, Maria Ascensão; Alves, Sheila; Santos, M. M. Correia dosThe purpose of this work is to contribute for the metrological traceability statement of chemical measurements. Traceability statement for total chromium mass fraction in serpentine soils was developed. Accordingly, the quantity values requiring a high degree of control are calibration and quality control standard solutions, matrix certified reference material and the calibration curve model fit.