Comparative study on the use of Ir, W and Zr-coated graphite tubes for the determination of chromium in slurries of human scalp hair by electrothermal atomic absorption spectrometry

1. Bermejo-Barrera, P.
2. Moreda-Piñeiro, A.
3. Moreda-Piñeiro, J.
4. Bermejo-Barrera, A.